1 00:00:00,000 --> 00:00:07,000 Remember, do not try anything you are about to see at home. 2 00:00:07,000 --> 00:00:17,000 On this episode of MythBusters, Adam and Jamie fight the bullet on an all-time classic myth. 3 00:00:17,000 --> 00:00:19,000 I'm told it's only going to hurt a lot. 4 00:00:19,000 --> 00:00:22,000 Do some people tolerate pain better than others? 5 00:00:22,000 --> 00:00:23,000 Ow. 6 00:00:23,000 --> 00:00:25,000 From natural redheads. 7 00:00:25,000 --> 00:00:27,000 I am proud to be one of them. 8 00:00:27,000 --> 00:00:31,000 Men versus women. Which group has the right stuff? 9 00:00:31,000 --> 00:00:33,000 Those are some tough mothers. 10 00:00:33,000 --> 00:00:35,000 And is swearing really a cure? 11 00:00:35,000 --> 00:00:37,000 Or just a curse? 12 00:00:37,000 --> 00:00:39,000 Oh, f***, sweet relief. 13 00:00:39,000 --> 00:00:44,000 Meanwhile, Tori Grant and Carrie tackle the myth of ballistic barbecues. 14 00:00:44,000 --> 00:00:45,000 Let's torch this thing! 15 00:00:45,000 --> 00:00:48,000 To see if a propane tank that's feeling the heat... 16 00:00:48,000 --> 00:00:50,000 We have the best jobs ever! 17 00:00:50,000 --> 00:00:54,000 ...is really a rocket just biding its time. 18 00:00:54,000 --> 00:00:56,000 Two, one. 19 00:01:01,000 --> 00:01:03,000 Who are the MythBusters? 20 00:01:03,000 --> 00:01:04,000 Adam Savage. 21 00:01:04,000 --> 00:01:07,000 Is my missing an eyebrow? 22 00:01:07,000 --> 00:01:08,000 And Jamie Heineman. 23 00:01:08,000 --> 00:01:10,000 Relax. This one hurt a bit. 24 00:01:10,000 --> 00:01:14,000 Between them more than 30 years of special effects experience... 25 00:01:14,000 --> 00:01:16,000 I ate a radio for science! 26 00:01:16,000 --> 00:01:18,000 ...joining them... 27 00:01:18,000 --> 00:01:19,000 Tori Bellachie. 28 00:01:19,000 --> 00:01:20,000 Hello, fire! 29 00:01:20,000 --> 00:01:22,000 Grant Imahara. 30 00:01:22,000 --> 00:01:23,000 Tori! 31 00:01:23,000 --> 00:01:24,000 And Carrie Byron. 32 00:01:24,000 --> 00:01:26,000 He's terrifying! 33 00:01:26,000 --> 00:01:30,000 They don't just tell the myth, they put them to the test. 34 00:01:37,000 --> 00:01:40,000 First up, a myth for the masochists. 35 00:01:44,000 --> 00:01:45,000 Paaay! 36 00:01:45,000 --> 00:01:47,000 Okay, that's creepy. What are you doing? 37 00:01:47,000 --> 00:01:50,000 Don't you remember when Spock was talking to the lava months? 38 00:01:50,000 --> 00:01:51,000 Okay, never mind. 39 00:01:51,000 --> 00:01:54,000 We are doing a whole set of stories specifically about pain. 40 00:01:54,000 --> 00:01:56,000 I've got one. You're a pain in the... 41 00:01:56,000 --> 00:01:59,000 Okay, nope. That's not one of the ones we're doing. 42 00:01:59,000 --> 00:02:00,000 We have three stories. 43 00:02:00,000 --> 00:02:04,000 One is that women can stand more pain than men. 44 00:02:04,000 --> 00:02:07,000 Two is that redheads can't stand very much pain at all. 45 00:02:07,000 --> 00:02:09,000 And the third, and I think you're gonna like this, 46 00:02:09,000 --> 00:02:13,000 is that supposedly cursing increases your ability to withstand pain. 47 00:02:13,000 --> 00:02:15,000 Well, I'm bleepin' love that. 48 00:02:15,000 --> 00:02:16,000 I thought you would. 49 00:02:17,000 --> 00:02:21,000 Now, Adam has more than a passing acquaintance with pain. 50 00:02:21,000 --> 00:02:25,000 And here's just a few of his greatest hits. 51 00:02:25,000 --> 00:02:29,000 But Adam himself hasn't a clue if his tolerance for pain 52 00:02:29,000 --> 00:02:31,000 is any better than the next guy. 53 00:02:31,000 --> 00:02:34,000 We're gonna have to stitch your mouth shut, I think, for this. 54 00:02:34,000 --> 00:02:36,000 Meh, you wish. 55 00:02:36,000 --> 00:02:37,000 So how's this gonna work? 56 00:02:37,000 --> 00:02:40,000 Well, clearly we're gonna have to subject a lot of people to pain 57 00:02:40,000 --> 00:02:42,000 in order to test these stories. 58 00:02:42,000 --> 00:02:43,000 I can do that. 59 00:02:43,000 --> 00:02:47,000 Well, I'm sure that you have some fascinating ideas. 60 00:02:47,000 --> 00:02:49,000 The fact is that professional scientists 61 00:02:49,000 --> 00:02:51,000 have been studying this subject for years, 62 00:02:51,000 --> 00:02:53,000 and I think it would behoove us to go to them 63 00:02:53,000 --> 00:02:55,000 and ask them what techniques they're using. 64 00:02:55,000 --> 00:02:58,000 Because remember, we've got to do this without damaging anybody. 65 00:02:58,000 --> 00:03:00,000 Oh. Okay. 66 00:03:09,000 --> 00:03:12,000 Dr. Chew, how is it you know so much about pain? 67 00:03:12,000 --> 00:03:15,000 Well, I'm an anesthesiologist, but I'm also a pain researcher. 68 00:03:15,000 --> 00:03:17,000 And I have a lab here at Stanford 69 00:03:17,000 --> 00:03:20,000 where I work on discovering new therapies and treatments for pain. 70 00:03:20,000 --> 00:03:21,000 In order to do that work, 71 00:03:21,000 --> 00:03:24,000 I need to be able to reliably induce pain in my patients. 72 00:03:24,000 --> 00:03:26,000 With Dr. Chew's help, 73 00:03:26,000 --> 00:03:30,000 we'll road test four kinds of clinical torture 74 00:03:30,000 --> 00:03:33,000 to find out the best one for testing the myths. 75 00:03:33,000 --> 00:03:36,000 They probably won't cause any real damage. 76 00:03:36,000 --> 00:03:38,000 First up is heat. 77 00:03:38,000 --> 00:03:41,000 This little black box here is actually a precisely controllable heater 78 00:03:41,000 --> 00:03:44,000 which soon we will strap to Jamie's arm 79 00:03:44,000 --> 00:03:47,000 and increase the heat until he can't stand it anymore. 80 00:03:47,000 --> 00:03:49,000 What could be better than that? 81 00:03:49,000 --> 00:03:51,000 Hi, Jamie. Hello. 82 00:03:51,000 --> 00:03:54,000 Jamie's told that his arm will get steadily hotter 83 00:03:54,000 --> 00:03:56,000 over the next 60 seconds, 84 00:03:56,000 --> 00:03:59,000 or until he can't stand it no more. 85 00:03:59,000 --> 00:04:01,000 So here's the button that you'll press. 86 00:04:01,000 --> 00:04:03,000 This goes in your right hand. 87 00:04:03,000 --> 00:04:06,000 So either red button will turn off the heat immediately. 88 00:04:06,000 --> 00:04:08,000 Okay. 89 00:04:08,000 --> 00:04:14,000 Abby also requests that he speaks out the instant he first feels real pain. 90 00:04:14,000 --> 00:04:18,000 And that would qualify as pain. 91 00:04:18,000 --> 00:04:20,000 Ow. 92 00:04:20,000 --> 00:04:22,000 But this is Jamie we're watching. 93 00:04:22,000 --> 00:04:25,000 A man so tough, he occasionally rusts. 94 00:04:25,000 --> 00:04:27,000 So that maxed out. 95 00:04:27,000 --> 00:04:29,000 Well, thank you. That was fun. 96 00:04:29,000 --> 00:04:31,000 Thank you. 97 00:04:31,000 --> 00:04:34,000 So here's the question for our man of steel. 98 00:04:34,000 --> 00:04:37,000 Is this what we're shopping for? 99 00:04:37,000 --> 00:04:40,000 I'd say that was quite painful and it did leave a mark. 100 00:04:40,000 --> 00:04:43,000 Whether we want to subject a bunch of people to that, 101 00:04:43,000 --> 00:04:45,000 I'm not so sure at this point. 102 00:04:45,000 --> 00:04:49,000 Next up, we'll change lab rats and methods. 103 00:04:49,000 --> 00:04:52,000 This one promises pain like you wouldn't believe. 104 00:04:52,000 --> 00:04:55,000 I am about to have capsaicin, 105 00:04:55,000 --> 00:04:58,000 which is the primary element in very spicy peppers, 106 00:04:58,000 --> 00:05:01,000 injected just under my skin. 107 00:05:01,000 --> 00:05:03,000 I'm told it's only going to hurt a lot. 108 00:05:03,000 --> 00:05:06,000 Now we've already had an excruciating brush with capsaicin. 109 00:05:06,000 --> 00:05:12,000 When Tori, Grant and Carrie bravely set out to find a cure for hot chili mouth. 110 00:05:12,000 --> 00:05:15,000 If capsaicin does that to your tongue, 111 00:05:15,000 --> 00:05:18,000 just imagine the pain from a hypodermic injection. 112 00:05:18,000 --> 00:05:20,000 Adam, okay. 113 00:05:20,000 --> 00:05:22,000 Now what I want you to do is not move. 114 00:05:22,000 --> 00:05:24,000 Okay. 115 00:05:24,000 --> 00:05:26,000 That'll be your instinct, but do not move. 116 00:05:26,000 --> 00:05:28,000 Okay, here we go. 117 00:05:28,000 --> 00:05:30,000 Ow. 118 00:05:30,000 --> 00:05:32,000 Oh, wow. 119 00:05:32,000 --> 00:05:34,000 On a scale of zero to ten? 120 00:05:34,000 --> 00:05:36,000 Ah, God. 121 00:05:36,000 --> 00:05:38,000 Okay, maybe a six? 122 00:05:38,000 --> 00:05:41,000 It really feels like I'm being burnt. 123 00:05:41,000 --> 00:05:45,000 See, I'm not used to feeling a pain that's not actually causing me damage. 124 00:05:45,000 --> 00:05:49,000 So I really want to like move and run water on it or something. 125 00:05:49,000 --> 00:05:52,000 Yeah, you want to see something too to make it worth it, right? 126 00:05:52,000 --> 00:05:54,000 Oh, wow. 127 00:05:54,000 --> 00:05:58,000 On a Mythbusters pain scale, this is not quite as bad as getting my tongue pierced. 128 00:05:58,000 --> 00:06:00,000 Okay, go. 129 00:06:00,000 --> 00:06:02,000 And out. 130 00:06:02,000 --> 00:06:04,000 I'll be right back until it goes away after ten minutes, 131 00:06:04,000 --> 00:06:09,000 but I don't think I'd want to do this to a bunch of test subjects in our shop. 132 00:06:09,000 --> 00:06:11,000 I see this as a no-go. 133 00:06:11,000 --> 00:06:13,000 Okay, let me go now. 134 00:06:13,000 --> 00:06:18,000 So while Adam recovers, it's Jamie's turn back in the hot seat. 135 00:06:18,000 --> 00:06:21,000 Next up is electric pain. 136 00:06:21,000 --> 00:06:25,000 Soon, a pair of electrodes will be strapped to Jamie's arm, 137 00:06:25,000 --> 00:06:28,000 touching his skin, and a current will be run through them. 138 00:06:28,000 --> 00:06:31,000 This will irritate his nerves and cause a local pain response, 139 00:06:31,000 --> 00:06:33,000 and then, that's not all. 140 00:06:33,000 --> 00:06:36,000 Then, this device, called a von Freiherr, 141 00:06:36,000 --> 00:06:41,000 will be poked around the painful area to map the area of sensitivity. 142 00:06:41,000 --> 00:06:45,000 If Jamie has any facial expressions at all, this is likely to be thrilling. 143 00:06:45,000 --> 00:06:49,000 Dr. Chew marks the shape of a star on Jamie's left forearm. 144 00:06:49,000 --> 00:06:54,000 The plan is to prod him when this is all over to test his sensitivity. 145 00:06:54,000 --> 00:06:56,000 That's pretty. 146 00:06:56,000 --> 00:06:59,000 Okay, Jamie, I'm going to hook you up to this electrical current, 147 00:06:59,000 --> 00:07:02,000 and I'm going to let it run for 30 minutes, and then I'll be back. 148 00:07:02,000 --> 00:07:06,000 That's a long time for Jamie to slowly suffer. 149 00:07:06,000 --> 00:07:11,000 Wow, this is kind of like being hooked up to an electric fence for a half hour. 150 00:07:11,000 --> 00:07:15,000 It's not excruciating, but it's not very nice. 151 00:07:15,000 --> 00:07:20,000 In due course, Dr. Chew returns to inflict some scientific stabbing. 152 00:07:20,000 --> 00:07:23,000 Well, I have a great idea now of your overall electrical pain threshold 153 00:07:23,000 --> 00:07:25,000 and your area of sensitivity. 154 00:07:25,000 --> 00:07:27,000 It was just what this test was designed to measure. 155 00:07:27,000 --> 00:07:30,000 Okay, so that means we can turn it off now? 156 00:07:30,000 --> 00:07:34,000 So now to the fourth and final torment. 157 00:07:34,000 --> 00:07:37,000 We all know that extreme cold can kill. 158 00:07:37,000 --> 00:07:39,000 It can also hurt like hell. 159 00:07:39,000 --> 00:07:42,000 Adam's going to be putting his hand all the way down into this ice bath 160 00:07:42,000 --> 00:07:44,000 where it's just above freezing. 161 00:07:44,000 --> 00:07:47,000 At first it'll feel cold, then he'll feel pain, 162 00:07:47,000 --> 00:07:50,000 and then when he just can't stand it anymore, he'll pull his hand out. 163 00:07:50,000 --> 00:07:54,000 Now, this is called the cold presser test, 164 00:07:54,000 --> 00:08:01,000 and it's the oldest and most well-established pain induction technique used in pain research. 165 00:08:01,000 --> 00:08:04,000 The temperature is just above freezing, 166 00:08:04,000 --> 00:08:06,000 and the rules are the same as before. 167 00:08:06,000 --> 00:08:10,000 Just hang on as long as you can. 168 00:08:10,000 --> 00:08:14,000 Look, it's one thing to read about a technique like immersing your hand in ice water 169 00:08:14,000 --> 00:08:16,000 and quite another to do it, 170 00:08:16,000 --> 00:08:19,000 and the most surprising thing, and I guess this shouldn't be surprising to me, 171 00:08:19,000 --> 00:08:20,000 is that it hurts. 172 00:08:20,000 --> 00:08:23,000 It hurts right away, and it's quite intense. 173 00:08:23,000 --> 00:08:27,000 Adam would like to go the distance, but it's not going to happen. 174 00:08:27,000 --> 00:08:28,000 No, here we go. 175 00:08:28,000 --> 00:08:30,000 That's it. 176 00:08:30,000 --> 00:08:32,000 Ow, that's intense. 177 00:08:32,000 --> 00:08:34,000 Good job. 178 00:08:34,000 --> 00:08:40,000 Adam lasted just 59 seconds, so we know that it hurts like the devil. 179 00:08:40,000 --> 00:08:44,000 After sampling for distinct kinds of supervised soreness, 180 00:08:44,000 --> 00:08:47,000 all that remains is to choose their poison. 181 00:08:47,000 --> 00:08:48,000 Do you feel more manly now? 182 00:08:48,000 --> 00:08:49,000 A little. 183 00:08:49,000 --> 00:08:50,000 A little bit. 184 00:08:50,000 --> 00:08:52,000 Shall we recap what we learned at Stanford? 185 00:08:52,000 --> 00:08:55,000 I think we need to throw out chili peppers and electricity, 186 00:08:55,000 --> 00:09:00,000 because they're designed to test sensitivity, not how much pain you can take. 187 00:09:00,000 --> 00:09:03,000 Okay, that leaves heat and ice. 188 00:09:03,000 --> 00:09:07,000 I'm going with ice, because it's been around the longest, and it's the most widely used. 189 00:09:07,000 --> 00:09:08,000 Ice it is. 190 00:09:08,000 --> 00:09:13,000 Well, let's start by testing whether or not women actually do have a higher pain tolerance than men. 191 00:09:13,000 --> 00:09:14,000 Okay. 192 00:09:16,000 --> 00:09:21,000 So it's gloves off between women and men to see who can have last the deep freeze. 193 00:09:21,000 --> 00:09:24,000 But before we can settle this test of the toughest, 194 00:09:24,000 --> 00:09:31,000 the boys need to scratch build a rig that can serve up the pain and cater for comfort. 195 00:09:31,000 --> 00:09:38,000 To make the testing more TV friendly, Adam turns a normal kitchen clock into a giant stopwatch. 196 00:09:38,000 --> 00:09:42,000 Now, to operate this clock, I've rigged up a sort of electronic armrest dead man switch. 197 00:09:42,000 --> 00:09:47,000 So the moment you put your hand in the ice and rest your arm on the armrest, the clock starts. 198 00:09:47,000 --> 00:09:50,000 Then the second you lift your arm out, the clock stops. 199 00:09:50,000 --> 00:09:58,000 Jamie's recirculating pump should ensure the ice water stays at 1°C for as long as the testing takes. 200 00:09:58,000 --> 00:10:01,000 The chill chair is ready for action. 201 00:10:01,000 --> 00:10:02,000 I like it. 202 00:10:03,000 --> 00:10:10,000 Upstairs, 25 men and 25 women have no idea what they're in for. 203 00:10:17,000 --> 00:10:22,000 Next up is the accidental rocket that could ruin your next barbecue. 204 00:10:22,000 --> 00:10:23,000 So you're looking excited. What's up? 205 00:10:23,000 --> 00:10:27,000 It's our myth. It's a good one, which kind of reminds me of my childhood. 206 00:10:27,000 --> 00:10:28,000 Okay, hit me. 207 00:10:28,000 --> 00:10:30,000 All right. Imagine a garage or a shed is on fire. 208 00:10:30,000 --> 00:10:35,000 Inside is a barbecue with a propane tape. 209 00:10:35,000 --> 00:10:40,000 It explodes and turns into a rocket launching 150 feet into the air. 210 00:10:40,000 --> 00:10:43,000 Oh, I've heard of this one. It's very similar to the water heater rocket. 211 00:10:43,000 --> 00:10:45,000 The heat causes the pressure inside the tank to build. 212 00:10:45,000 --> 00:10:49,000 Then there's a catastrophic rupture and sends the tank flying up into the sky. 213 00:10:49,000 --> 00:10:51,000 Wait, wait, wait. This reminds me of your childhood? 214 00:10:51,000 --> 00:10:55,000 Yeah, I'd rather not talk about it. My parents are still a little upset. 215 00:10:55,000 --> 00:11:01,000 Like they said, this isn't the first time we've adapted a pressure vessel. 216 00:11:02,000 --> 00:11:05,000 Or deliberately set one on fire. 217 00:11:05,000 --> 00:11:09,000 Or even tried to turn a gas tank into a missile. 218 00:11:10,000 --> 00:11:16,000 But if this myth is true, catastrophe could be brewing in your own backyard. 219 00:11:16,000 --> 00:11:20,000 The story goes that a propane tank once became a rocket. 220 00:11:20,000 --> 00:11:24,000 At its perfect trajectory, it 150 feet. 221 00:11:24,000 --> 00:11:26,000 Look, I gotta say, I got my doubts about this. 222 00:11:26,000 --> 00:11:27,000 How so? 223 00:11:27,000 --> 00:11:32,000 Propane tanks, just like all of the pressurized vessels, have a pressure relief valve built in. 224 00:11:32,000 --> 00:11:37,000 When the pressure gets too high, they simply vent off the excess, thereby averting a catastrophic failure. 225 00:11:37,000 --> 00:11:42,000 Yeah, but what if the fire is so intense that the pressure is building faster inside the tank 226 00:11:42,000 --> 00:11:44,000 than the relief valve can dump out? 227 00:11:44,000 --> 00:11:46,000 I suppose it's possible. 228 00:11:46,000 --> 00:11:48,000 But it needs bomb range. 229 00:11:48,000 --> 00:11:52,000 Now, for this myth, we need a burning garage with a propane tank inside of it. 230 00:11:52,000 --> 00:11:56,000 Now, since no one's gonna let us burn down a garage, we need to build our own. 231 00:11:56,000 --> 00:12:00,000 We don't have time to build a full-size one, so we're gonna make a miniature one. 232 00:12:00,000 --> 00:12:02,000 But we're still gonna build it up to code. 233 00:12:02,000 --> 00:12:04,000 It's gonna have studs every 16 inches. 234 00:12:04,000 --> 00:12:06,000 It's gonna have three walls, a driveway, and a roof. 235 00:12:06,000 --> 00:12:13,000 Now, that should be plenty of material to burn in order to get this garage hot enough to turn this propane tank into a rocket. 236 00:12:13,000 --> 00:12:18,000 Here on the show, we like to say that every day's a good day for an explosion, 237 00:12:18,000 --> 00:12:21,000 but some days are definitely better than others. 238 00:12:21,000 --> 00:12:25,000 I thought the dangerous part was gonna be the exploding propane tanks. 239 00:12:25,000 --> 00:12:26,000 You all right? 240 00:12:26,000 --> 00:12:27,000 Oh, no. 241 00:12:27,000 --> 00:12:34,000 It's hardly a firm foundation, but the guys know that today, the joys of shed ownership will be fleeting. 242 00:12:34,000 --> 00:12:35,000 Woo! 243 00:12:35,000 --> 00:12:40,000 They're now ready to install the stunt barbecue and the star of the show. 244 00:12:40,000 --> 00:12:45,000 Hey, don't forget the propane came straight from my garage. 245 00:12:46,000 --> 00:12:49,000 But there's still some fuel to add to the fire. 246 00:12:49,000 --> 00:12:53,000 So this kind of looks like a lot of firewood, right? 247 00:12:53,000 --> 00:12:59,000 Well, it is, because what we want is for this fire to burn long and hot. 248 00:12:59,000 --> 00:13:07,000 So they stack the shed with wood and charcoal, two common commodities that should catch fire and raise the temperature. 249 00:13:07,000 --> 00:13:12,000 Now, this fire is gonna get so hot that there is a good chance that this tank is gonna explode. 250 00:13:12,000 --> 00:13:20,000 But we want a rocket, and if the relief valve does its job, this could turn out to be nothing more than a backyard bonfire. 251 00:13:20,000 --> 00:13:25,000 Then again, one of the great things about Mythbusters is that we're so off and wrong. 252 00:13:26,000 --> 00:13:33,000 After a liberal splash of gasoline, the team shows its flair for setting a fire. 253 00:13:33,000 --> 00:13:34,000 Alright, you guys ready? 254 00:13:34,000 --> 00:13:35,000 Ready. 255 00:13:35,000 --> 00:13:39,000 Let's torch this thing in three, two, one. 256 00:13:44,000 --> 00:13:49,000 Each passing second feels like 10 as they high-tail it back to the bunker. 257 00:13:49,000 --> 00:13:51,000 Oh, that thing is going up. 258 00:13:51,000 --> 00:13:52,000 Oh, my God. 259 00:13:55,000 --> 00:13:56,000 Okay. 260 00:14:02,000 --> 00:14:06,000 By the time they arrive, the shed's an inferno. 261 00:14:06,000 --> 00:14:09,000 Okay, the flare cam says 302 degrees. 262 00:14:09,000 --> 00:14:10,000 Look at that. 263 00:14:10,000 --> 00:14:11,000 It's just all white. 264 00:14:11,000 --> 00:14:19,000 Then, with the temperature passing 800 degrees, the safety valve finally kicks in, doing exactly what it's supposed to do. 265 00:14:19,000 --> 00:14:21,000 There it goes. 266 00:14:21,000 --> 00:14:23,000 The relief valve just broke. 267 00:14:23,000 --> 00:14:24,000 Look at that. 268 00:14:24,000 --> 00:14:25,000 It's like a flamethrower. 269 00:14:25,000 --> 00:14:30,000 So there she blows, and the cylinder didn't move an inch. 270 00:14:30,000 --> 00:14:35,000 The valve released the gas pressure faster, and the tank could build it up. 271 00:14:35,000 --> 00:14:38,000 The important thing is that the tank did not rupture. 272 00:14:38,000 --> 00:14:45,000 There was no explosion, and we saw a jet of fire, but no thrust, which would make a rocket. 273 00:14:45,000 --> 00:14:50,000 So the shed bites the dust, but there's room for improvement. 274 00:14:50,000 --> 00:14:53,000 So this myth is not confirmed under normal circumstances. 275 00:14:53,000 --> 00:14:56,000 It looks like we're going to have to disable the pressure relief valve to get any sort of result. 276 00:14:56,000 --> 00:15:01,000 Maybe we need to go back to the shop, change the circumstances to get one of these tanks to act more like a rocket. 277 00:15:01,000 --> 00:15:03,000 All right. 278 00:15:05,000 --> 00:15:09,000 Coming up, Adam and Jamie finally settle the biggest gender myth of all. 279 00:15:09,000 --> 00:15:13,000 Can women really take more pain than men? 280 00:15:13,000 --> 00:15:14,000 It hurts, doesn't it? 281 00:15:14,000 --> 00:15:15,000 Yes, it does. 282 00:15:21,000 --> 00:15:24,000 This myth is called no pain, no gain. 283 00:15:24,000 --> 00:15:28,000 Though I must admit, it's often hard to see an upside. 284 00:15:28,000 --> 00:15:36,000 Adam and Jamie have settled on their torment of choice, which is sticking your arm in an ice bath to see who lasts the longest. 285 00:15:36,000 --> 00:15:41,000 And the very first contest is men versus women. 286 00:15:41,000 --> 00:15:44,000 The volunteers have all been declared fit and healthy. 287 00:15:44,000 --> 00:15:48,000 None of them know there's a three-minute cap on the ice dunk. 288 00:15:48,000 --> 00:15:51,000 In fact, they don't even know why they're here. 289 00:15:51,000 --> 00:15:57,000 And now it's time for women versus men, specifically the myth that women have a higher tolerance for pain than men. 290 00:15:57,000 --> 00:15:58,000 Why is this interesting? 291 00:15:58,000 --> 00:16:02,000 Well, in our society, men are viewed as strong and women are viewed as weak. 292 00:16:02,000 --> 00:16:05,000 And wouldn't it be lovely if the reverse were true? 293 00:16:05,000 --> 00:16:06,000 It sure would. 294 00:16:06,000 --> 00:16:08,000 And we're about to find out. 295 00:16:08,000 --> 00:16:14,000 Yes, so you keep your hand, your fingers apart so that they get as cold as possible. 296 00:16:14,000 --> 00:16:15,000 Okay. 297 00:16:15,000 --> 00:16:17,000 And hold your hand still in the bucket. 298 00:16:17,000 --> 00:16:18,000 You don't have to do this. 299 00:16:18,000 --> 00:16:19,000 Are you okay with it? 300 00:16:19,000 --> 00:16:20,000 I'm fine. 301 00:16:20,000 --> 00:16:21,000 Okay. 302 00:16:21,000 --> 00:16:23,000 Melissa commits. 303 00:16:23,000 --> 00:16:27,000 Other than that, the instructions are much like the guys got at Stanford. 304 00:16:27,000 --> 00:16:31,000 Sing out when it hurts and pull out when it's all too much. 305 00:16:31,000 --> 00:16:33,000 That's pain. 306 00:16:33,000 --> 00:16:34,000 Okay. 307 00:16:34,000 --> 00:16:35,000 You got it? 308 00:16:35,000 --> 00:16:37,000 I got it. 309 00:16:37,000 --> 00:16:44,000 As the seconds tick by, Melissa proves more than a match for the arm-numbing pain. 310 00:16:44,000 --> 00:16:45,000 And you're done. 311 00:16:45,000 --> 00:16:46,000 You're done. 312 00:16:46,000 --> 00:16:48,000 We have a three-minute safety cutoff. 313 00:16:48,000 --> 00:16:49,000 Excellent. 314 00:16:49,000 --> 00:16:50,000 You did amazing. 315 00:16:50,000 --> 00:16:51,000 Oh, my gosh. 316 00:16:51,000 --> 00:16:52,000 Thank you. 317 00:16:52,000 --> 00:16:56,000 That's a positive start for girls versus guys. 318 00:16:56,000 --> 00:17:00,000 But the following females fall way short of that magic mark. 319 00:17:00,000 --> 00:17:03,000 Now be sure to tell us whenever you start to feel pain. 320 00:17:03,000 --> 00:17:05,000 All right, it's starting to hurt. 321 00:17:05,000 --> 00:17:06,000 Okay. 322 00:17:06,000 --> 00:17:09,000 The next four contestants are much more like Adam. 323 00:17:09,000 --> 00:17:12,000 They all last less than a minute. 324 00:17:12,000 --> 00:17:18,000 While Adam crunches the numbers, our paramedic Sanjay is on hand to check their vitals. 325 00:17:18,000 --> 00:17:21,000 You feeling dizzy, lightheaded, anything like that? 326 00:17:21,000 --> 00:17:22,000 Any chest pain? 327 00:17:22,000 --> 00:17:23,000 Sort of spread? 328 00:17:23,000 --> 00:17:24,000 Okay. 329 00:17:24,000 --> 00:17:26,000 Continue drying your hand and come with me into the sun. 330 00:17:26,000 --> 00:17:27,000 All right. 331 00:17:27,000 --> 00:17:31,000 But how can a simple tub of cold water cause so much discomfort? 332 00:17:31,000 --> 00:17:33,000 So how does ice water cause pain? 333 00:17:33,000 --> 00:17:38,000 Well, you have special receptors in your skin called nociceptors, and these are specifically 334 00:17:38,000 --> 00:17:39,000 to sense temperature. 335 00:17:39,000 --> 00:17:44,000 So when your skin temperature gets low enough, these send a signal to your spinal cord and 336 00:17:44,000 --> 00:17:47,000 then to your brain, and this is what you interpret as pain. 337 00:17:47,000 --> 00:17:53,000 Now the goal here is to get you to remove your hand before you receive any actual damage. 338 00:17:53,000 --> 00:17:59,000 So the tolerance testing begins for the men, and just like the women, they have no idea 339 00:17:59,000 --> 00:18:01,000 that this is a battle of the sexes. 340 00:18:01,000 --> 00:18:02,000 Go ahead. 341 00:18:02,000 --> 00:18:03,000 All right. 342 00:18:03,000 --> 00:18:05,000 Keep your fingers spread. 343 00:18:05,000 --> 00:18:06,000 There we go. 344 00:18:06,000 --> 00:18:09,000 And tell us when you first experience pain. 345 00:18:09,000 --> 00:18:12,000 For the record, that takes just 15 seconds. 346 00:18:12,000 --> 00:18:14,000 Okay, I got some pain now. 347 00:18:14,000 --> 00:18:15,000 Okay. 348 00:18:15,000 --> 00:18:22,000 Half a minute later, Thomas, who looks as tough as teak, has had enough. 349 00:18:22,000 --> 00:18:24,000 All right then. 350 00:18:24,000 --> 00:18:25,000 It hurts, doesn't it? 351 00:18:25,000 --> 00:18:26,000 Yes, it does. 352 00:18:26,000 --> 00:18:27,000 Okay. 353 00:18:27,000 --> 00:18:33,000 In the next 60 minutes, many more men take the one degree plunge into pain. 354 00:18:33,000 --> 00:18:34,000 Okay. 355 00:18:34,000 --> 00:18:35,000 Excellent. 356 00:18:35,000 --> 00:18:36,000 Excellent. 357 00:18:36,000 --> 00:18:39,000 And some do beat the clock. 358 00:18:39,000 --> 00:18:40,000 And that's it. 359 00:18:40,000 --> 00:18:41,000 That's three minutes. 360 00:18:41,000 --> 00:18:42,000 All right. 361 00:18:42,000 --> 00:18:46,000 Tell by the ice that's stuck to your forearm. 362 00:18:46,000 --> 00:18:48,000 Okay. 363 00:18:48,000 --> 00:18:52,000 While others just seem doomed from the start. 364 00:18:52,000 --> 00:18:53,000 Okay. 365 00:18:53,000 --> 00:18:54,000 Excellent. 366 00:18:54,000 --> 00:18:55,000 Nicely done. 367 00:18:55,000 --> 00:18:59,000 Watch your step coming off here. 368 00:18:59,000 --> 00:19:01,000 Steven succumbs to unbearable pain. 369 00:19:01,000 --> 00:19:03,000 Sanjeev, I'll take it from here. 370 00:19:03,000 --> 00:19:04,000 Okay, thank you. 371 00:19:04,000 --> 00:19:05,000 Steven, thank you. 372 00:19:05,000 --> 00:19:06,000 Thank you. 373 00:19:06,000 --> 00:19:10,000 Thanks to all those who've rolled up their sleeves for popular science. 374 00:19:10,000 --> 00:19:14,000 Adam's done the arithmetic, so we won't keep you waiting on men versus women. 375 00:19:14,000 --> 00:19:20,000 The final figures are the average number of seconds they lasted. 376 00:19:20,000 --> 00:19:21,000 Ta-da! 377 00:19:21,000 --> 00:19:23,000 We have crunched the numbers from all our test subjects. 378 00:19:23,000 --> 00:19:25,000 Would you like to know the result? 379 00:19:25,000 --> 00:19:26,000 Yes. 380 00:19:26,000 --> 00:19:27,000 Okay, here it comes. 381 00:19:27,000 --> 00:19:30,000 The result is myth confirmed. 382 00:19:30,000 --> 00:19:35,000 Women did, in fact, have a reasonably higher tolerance for pain than men in our study. 383 00:19:35,000 --> 00:19:36,000 I'll be darned. 384 00:19:36,000 --> 00:19:37,000 Ha! 385 00:19:37,000 --> 00:19:39,000 In your face, man! 386 00:19:39,000 --> 00:19:40,000 Oh. 387 00:19:40,000 --> 00:19:47,000 Up next, hopes are sky-high for a real backyard rocket. 388 00:19:47,000 --> 00:19:49,000 Does it look like it's getting rounder? 389 00:19:49,000 --> 00:19:51,000 Oh! 390 00:19:51,000 --> 00:20:01,000 Tori, Grant and Kerry are testing the myth that a super-heated propane tank could rupture 391 00:20:01,000 --> 00:20:06,000 and take off like a rocket, 150 feet in the air. 392 00:20:06,000 --> 00:20:09,000 So far, all they've done is burn down a shed. 393 00:20:09,000 --> 00:20:15,000 Now, it's time to disable that pesky safety relief valve from an empty tank. 394 00:20:15,000 --> 00:20:20,000 So, these propane tanks have a lot of safety features built in, and they don't want you 395 00:20:20,000 --> 00:20:23,000 to be able to go in and defeat them. 396 00:20:23,000 --> 00:20:30,000 So, us professional YAHOOs have to grind our own tools, because this is a non-standard goal. 397 00:20:30,000 --> 00:20:36,000 So, we take this perfectly good wrench and make it into a custom removal tool. 398 00:20:36,000 --> 00:20:43,000 And that's as much as we're going to show or explain, because trying this yourself is a really bad idea. 399 00:20:43,000 --> 00:20:51,000 Suffice it to say that before long, Grant's removed the device and plugged the hole to simulate an old tank with a busted valve. 400 00:20:51,000 --> 00:20:59,000 Gotta say, with this safety valve disabled, I see big boom in our future. 401 00:20:59,000 --> 00:21:05,000 Back on the range, Tori reveals the other major modification in Plan B. 402 00:21:05,000 --> 00:21:12,000 Instead of burning a shed, they'll heat their blocked-up tank with a portable propane gas range. 403 00:21:12,000 --> 00:21:17,000 So, we're setting up a burner, attaching a 20-foot hard line to that, 404 00:21:17,000 --> 00:21:22,000 then to that we're going to attach a 200-foot line down the bomb range to our feed tank. 405 00:21:22,000 --> 00:21:30,000 Now, just so we're all crystal clear, this feed tank pumps propane direct to the burner, so the flames stay lit. 406 00:21:30,000 --> 00:21:34,000 It's in no way hooked up to our canister rocket. 407 00:21:34,000 --> 00:21:39,000 A pressure release valve, which we've dismantled from this particular tank, is there to prevent a key disaster. 408 00:21:39,000 --> 00:21:44,000 It's called a blevi. Now, that's an acronym for Boiling Liquid Expanding Vapor Explosion, 409 00:21:44,000 --> 00:21:51,000 a vessel that has a pressurized liquid inside. When it ruptures, it can have a catastrophic explosion. 410 00:21:51,000 --> 00:21:56,000 They should get their blevi, but Grant doubts he'll witness the launch of a missile. 411 00:21:56,000 --> 00:22:03,000 The problem is we don't know where it's going to rupture. I think it's going to rupture probably on this seam and go, wham! 412 00:22:03,000 --> 00:22:05,000 I still don't think it's going to be a rocket. 413 00:22:05,000 --> 00:22:09,000 To find out if he's right, Tori lights up the stovetop. 414 00:22:09,000 --> 00:22:10,000 Here we go. 415 00:22:10,000 --> 00:22:12,000 While Grant pumps the gas. 416 00:22:19,000 --> 00:22:20,000 This could be big. 417 00:22:20,000 --> 00:22:21,000 It could be really big. 418 00:22:21,000 --> 00:22:22,000 It's going to be a huge fireball. 419 00:22:22,000 --> 00:22:25,000 Or a really awesome rocket. 420 00:22:25,000 --> 00:22:27,000 Look at the bottom, it's blackening. 421 00:22:27,000 --> 00:22:31,000 And you can see the blurry heat fog right above it. 422 00:22:32,000 --> 00:22:36,000 Ten minutes in, this modified tank looks like it's ready to burst. 423 00:22:36,000 --> 00:22:40,000 It's the tank? Does it look like it's getting rounder? 424 00:22:40,000 --> 00:22:41,000 It does. 425 00:22:41,000 --> 00:22:42,000 Yeah, it does, right? 426 00:22:47,000 --> 00:22:54,000 Well, it wasn't necessarily a rocket, because pieces went that way, that way, that way, that way, that way, that way, that way, that way. 427 00:22:54,000 --> 00:22:58,000 In fact, they went every which way but vertical. 428 00:22:59,000 --> 00:23:01,000 There's a piece right there! 429 00:23:01,000 --> 00:23:04,000 That was on the way! 430 00:23:04,000 --> 00:23:06,000 Glad you're in the bunker, huh? 431 00:23:06,000 --> 00:23:08,000 Wow, crap. 432 00:23:08,000 --> 00:23:12,000 The actual blast was so strong, it blew out the flame from the burner. 433 00:23:12,000 --> 00:23:20,000 Some of the shards flew 300 feet sideways, but stray bits of metal do not make a rocket. 434 00:23:20,000 --> 00:23:24,000 So this is what's left of our tank, and it's pretty much what I expected to happen. 435 00:23:24,000 --> 00:23:27,000 They rupture, however, they rupture in random spots. 436 00:23:27,000 --> 00:23:35,000 We definitely achieved a blevy. Our tank ruptured and lost all of its energy all at once, rather than any sort of nozzle-like activity. 437 00:23:35,000 --> 00:23:42,000 What we want is a tiny hole punched through the base to release all the force of the pressurized gas. 438 00:23:42,000 --> 00:23:49,000 And if a tank was part-rusted in just the right spot, there's a good chance we'd get our rocket. 439 00:23:49,000 --> 00:23:52,000 Oh, I think we could definitely do that. Let's go try it. 440 00:23:52,000 --> 00:23:53,000 Alright. 441 00:23:54,000 --> 00:23:59,000 So we're back in the shot. Now before we start weakening these tanks as if they were rusty or old tanks, 442 00:23:59,000 --> 00:24:01,000 I need to find out exactly what I'm up against. 443 00:24:01,000 --> 00:24:05,000 So what I'm going to do is cut one of these in half just to find out how thick the wall is. 444 00:24:05,000 --> 00:24:10,000 Because we want to cut halfway through the thickness of the wall, not all the way through in puncture. 445 00:24:10,000 --> 00:24:18,000 Ever so carefully, Torey splits the empty tank in two, then pulls out the calipers. 446 00:24:19,000 --> 00:24:25,000 Knowing that the base of this tank is .083 inches thick, this is where we want to weaken the tank, 447 00:24:25,000 --> 00:24:32,000 so that this fails before the rest of the tank ruptures and hopefully creates a nozzle through which we get thrust. 448 00:24:33,000 --> 00:24:37,000 So Grant sets the drill to just half that depth, 449 00:24:37,000 --> 00:24:43,000 boring a divot to approximate a neglected tank that's part-rusted through. 450 00:24:43,000 --> 00:24:45,000 Now it's on to make a rocket. 451 00:24:48,000 --> 00:24:49,000 Alright. 452 00:24:50,000 --> 00:24:53,000 Out on the bomb range, well, at least it's not raining. 453 00:24:54,000 --> 00:24:55,000 Oh dear. 454 00:24:58,000 --> 00:25:00,000 If this was NASA, they'd call off the launch. 455 00:25:00,000 --> 00:25:04,000 But perseverance pays off as the fog soon lifts, 456 00:25:04,000 --> 00:25:07,000 and hopes are high for a genuine lift off. 457 00:25:07,000 --> 00:25:09,000 This should be fun. 458 00:25:10,000 --> 00:25:15,000 For this myth to be confirmed, we're actually going to have to propel that tank 150 feet in the air. 459 00:25:15,000 --> 00:25:19,000 That's a five gallon tank. That is going to take so much thrust. 460 00:25:23,000 --> 00:25:24,000 That's a lot of thrust. 461 00:25:25,000 --> 00:25:31,000 Once again, they'll heat the tank with a propane burner, and the pressure relief valve is blocked off. 462 00:25:31,000 --> 00:25:32,000 Is it good yet? 463 00:25:32,000 --> 00:25:36,000 This will be the ultimate test of a compromise container. 464 00:25:36,000 --> 00:25:41,000 Now we're ready to see if a five gallon barbecue gas tank can really take flight. 465 00:25:41,000 --> 00:25:43,000 Okay, ready to start. 466 00:25:43,000 --> 00:25:45,000 Alright, turn it on. 467 00:25:46,000 --> 00:25:47,000 Good. 468 00:25:55,000 --> 00:25:57,000 Let's see if we get a rocket. 469 00:26:00,000 --> 00:26:02,000 I think it's going to work this time. 470 00:26:02,000 --> 00:26:04,000 I'm feeling really good about this experiment. 471 00:26:04,000 --> 00:26:09,000 I feel confident that weakening right on the bottom, it's in the perfect place to form a rocket nozzle. 472 00:26:09,000 --> 00:26:11,000 Whatever happens, it's going to be spectacular. 473 00:26:11,000 --> 00:26:13,000 But it's clear that they'll have to be patient. 474 00:26:13,000 --> 00:26:17,000 After almost four minutes, the tank isn't bulging like the last time. 475 00:26:18,000 --> 00:26:19,000 Then... 476 00:26:23,000 --> 00:26:24,000 I don't think that was a rocket. 477 00:26:24,000 --> 00:26:27,000 That was absolutely not a rocket. It just blew up. 478 00:26:27,000 --> 00:26:30,000 Once again, the blast extinguished the burner. 479 00:26:30,000 --> 00:26:36,000 It's a splatter spectacular, but the myth remains vertically challenged. 480 00:26:36,000 --> 00:26:42,000 We got a rupture that started from the bottom, it peeled apart the tank, threw it in many different directions, 481 00:26:42,000 --> 00:26:45,000 but nothing looked like a rocket. 482 00:26:46,000 --> 00:26:52,000 It's another disastrous failure to launch, but the bit that burst first went exactly the plan. 483 00:26:52,000 --> 00:26:54,000 And did you notice where it ruptured? 484 00:26:54,000 --> 00:26:56,000 I mean exactly where we weakened the tank. 485 00:26:56,000 --> 00:27:02,000 Still not a rocket, but you know, before we give up on the scenario, we used a full tank here. 486 00:27:02,000 --> 00:27:05,000 What if the tank in the garage was almost empty? 487 00:27:05,000 --> 00:27:07,000 Another explosion? Okay, I'm in. 488 00:27:08,000 --> 00:27:14,000 Grant's theory that less is more might well be the key to unleashing the power of propane. 489 00:27:14,000 --> 00:27:17,000 And who can say no to another explosion? 490 00:27:22,000 --> 00:27:27,000 Straight ahead, Adam's red-headed peeps are put to the ultimate pain test. 491 00:27:27,000 --> 00:27:28,000 I hate cold. 492 00:27:28,000 --> 00:27:30,000 Ha ha ha, oh good. 493 00:27:36,000 --> 00:27:45,000 So far, Cary, Grant and Tory have totally failed to confirm the myth that a barbecue propane tank could fly like a rocket. 494 00:27:45,000 --> 00:27:47,000 They've blocked off the relief valve. 495 00:27:47,000 --> 00:27:49,000 This is wet, that way, that way. 496 00:27:49,000 --> 00:27:52,000 Then drilled out the bottom to simulate a rusty tank. 497 00:27:52,000 --> 00:27:54,000 I don't think that was a rocket. 498 00:27:54,000 --> 00:27:59,000 But Grant thinks the key to success is to stop way short of filling the tank. 499 00:27:59,000 --> 00:28:03,000 Now nearly empty propane tank might be the key to creating a rocket. 500 00:28:03,000 --> 00:28:05,000 Let me illustrate with this water bottle. 501 00:28:05,000 --> 00:28:08,000 Now the water in here represents the liquid propane. 502 00:28:08,000 --> 00:28:10,000 It's incompressible. 503 00:28:10,000 --> 00:28:13,000 There's no room for the gas to expand and build up pressure. 504 00:28:13,000 --> 00:28:17,000 But if we remove most of that liquid, 505 00:28:19,000 --> 00:28:23,000 now we have all of this volume for the gas to expand and build up pressure. 506 00:28:23,000 --> 00:28:26,000 And that might be what turns this into a rocket. 507 00:28:26,000 --> 00:28:31,000 I'm having a hard time believing that this is going to happen after the last few tests. 508 00:28:31,000 --> 00:28:35,000 But since we are changing the circumstances just slightly, 509 00:28:35,000 --> 00:28:39,000 putting less propane in, we might have a different conclusion. 510 00:28:39,000 --> 00:28:43,000 This time, Cary does the cooking and the running. 511 00:28:47,000 --> 00:28:51,000 No one knows just what's going to happen or when. 512 00:28:51,000 --> 00:28:53,000 It's starting to look like it's swelling a little bit. 513 00:28:53,000 --> 00:28:55,000 Well, it's turned almost completely black. 514 00:28:55,000 --> 00:28:57,000 That's when it exploded last time. 515 00:28:57,000 --> 00:28:59,000 Propane rocket. 516 00:28:59,000 --> 00:29:01,000 Here we go. 517 00:29:01,000 --> 00:29:03,000 And sooner than Tori expected... 518 00:29:07,000 --> 00:29:09,000 We got a rocket! 519 00:29:09,000 --> 00:29:11,000 Wait, wait, wait, wait, wait, wait, wait. 520 00:29:11,000 --> 00:29:14,000 That was not 150 feet in the air. 521 00:29:14,000 --> 00:29:16,000 And it didn't go straight up. 522 00:29:16,000 --> 00:29:21,000 Alright, but you have to admit, that is the best thing we've seen so far. 523 00:29:21,000 --> 00:29:27,000 In fact, it's the first tank they've seen that shot up like a missile and stayed intact. 524 00:29:27,000 --> 00:29:29,000 We're all incredibly excited right now. 525 00:29:29,000 --> 00:29:32,000 I mean, we actually created something that looked like a rocket. 526 00:29:32,000 --> 00:29:36,000 A 60 foot launch is not the 150 they wanted, 527 00:29:36,000 --> 00:29:40,000 but it's promising and totally spectacular. 528 00:29:40,000 --> 00:29:42,000 You'd be a brave man to call this one busted. 529 00:29:42,000 --> 00:29:44,000 It's totally plausible. 530 00:29:44,000 --> 00:29:47,000 It didn't make it to 150 feet, but it did look like a rocket. 531 00:29:47,000 --> 00:29:49,000 Yeah, this is like a lot of our myths. 532 00:29:49,000 --> 00:29:52,000 I mean, we have a bizarre set of circumstances that gives us a totally wild outcome. 533 00:29:52,000 --> 00:29:54,000 But we didn't get that 150 feet. 534 00:29:54,000 --> 00:29:57,000 I mean, what can we do to make that go 150 feet? 535 00:29:57,000 --> 00:29:59,000 Oh. 536 00:30:00,000 --> 00:30:03,000 Laughter like that can only mean one thing. 537 00:30:03,000 --> 00:30:07,000 They will do whatever it takes to match the myth. 538 00:30:24,000 --> 00:30:26,000 You've pondered this yourself. 539 00:30:26,000 --> 00:30:29,000 Can some of us tolerate more pain than others? 540 00:30:29,000 --> 00:30:31,000 Shoo! 541 00:30:31,000 --> 00:30:33,000 Shoo! 542 00:30:33,000 --> 00:30:37,000 So far, it's hardly been a case of dam zills in distress. 543 00:30:37,000 --> 00:30:41,000 The testing shows women are clearly more stoic than men. 544 00:30:41,000 --> 00:30:42,000 What's next, Adam? 545 00:30:42,000 --> 00:30:44,000 Next is a myth that I take a little personally, 546 00:30:44,000 --> 00:30:50,000 and it is that redheads supposedly have a lower tolerance for pain than regular people. 547 00:30:50,000 --> 00:30:53,000 So once again, you get to experience pain for science, huh? 548 00:30:53,000 --> 00:30:55,000 No, no, no. 549 00:30:55,000 --> 00:30:58,000 I did my duty walking on hot coals, man. 550 00:30:58,000 --> 00:31:01,000 I remember it like it was yesterday. 551 00:31:01,000 --> 00:31:05,000 This was the time when the whole team walked the walk on hot coals, 552 00:31:05,000 --> 00:31:10,000 and the only one to suffer was our resident redhead. 553 00:31:10,000 --> 00:31:14,000 The rules are exactly the same as for men versus women, 554 00:31:14,000 --> 00:31:17,000 and it already seems there's some truth to the rumor. 555 00:31:17,000 --> 00:31:18,000 I hate cold. 556 00:31:18,000 --> 00:31:20,000 Oh, good. 557 00:31:20,000 --> 00:31:25,000 There we go. Perfect. 558 00:31:25,000 --> 00:31:28,000 I've heard that redheads have a lower tolerance of pain, 559 00:31:28,000 --> 00:31:33,000 but I don't actually know a large enough sample group to confirm or deny that, 560 00:31:33,000 --> 00:31:35,000 so we'll see what happens today. 561 00:31:35,000 --> 00:31:36,000 We sure will. 562 00:31:36,000 --> 00:31:37,000 Done. 563 00:31:37,000 --> 00:31:39,000 Excellent. 564 00:31:39,000 --> 00:31:41,000 As two dozen more women... 565 00:31:41,000 --> 00:31:43,000 It's ridiculous the cold. 566 00:31:43,000 --> 00:31:44,000 Isn't it? 567 00:31:44,000 --> 00:31:46,000 And men, whenever you're ready. 568 00:31:46,000 --> 00:31:47,000 All right. 569 00:31:47,000 --> 00:31:50,000 Wave the flag for the redheaded regiment. 570 00:31:50,000 --> 00:31:51,000 Perfect. 571 00:31:51,000 --> 00:31:52,000 I think it is a myth. 572 00:31:52,000 --> 00:31:55,000 I think we may feel it faster than other people. 573 00:31:55,000 --> 00:31:57,000 And now it's starting to hurt. 574 00:31:57,000 --> 00:32:00,000 But I think we can stand it just as well, if not better. 575 00:32:00,000 --> 00:32:02,000 And you made it to three minutes. 576 00:32:02,000 --> 00:32:04,000 Out you come. 577 00:32:04,000 --> 00:32:09,000 Brian's the first of a small batch to challenge the myth that the redheads can't take it. 578 00:32:09,000 --> 00:32:10,000 You made it three minutes. 579 00:32:10,000 --> 00:32:11,000 Done. 580 00:32:11,000 --> 00:32:13,000 And pull your hand out. 581 00:32:13,000 --> 00:32:15,000 Excellent work. 582 00:32:15,000 --> 00:32:21,000 They last long enough to make busting this part of the myth a real possibility. 583 00:32:21,000 --> 00:32:24,000 All right, Jamie, it's time for the one I know that you've been waiting for. 584 00:32:24,000 --> 00:32:27,000 Redheads versus non-redheads. 585 00:32:27,000 --> 00:32:29,000 We crunch the numbers. 586 00:32:29,000 --> 00:32:30,000 Do you want to know the result? 587 00:32:30,000 --> 00:32:31,000 Yes. 588 00:32:31,000 --> 00:32:32,000 Okay, here they come. 589 00:32:32,000 --> 00:32:38,000 The myth that redheads have a lower tolerance for pain is busted hugely. 590 00:32:38,000 --> 00:32:39,000 Look at the redheads. 591 00:32:39,000 --> 00:32:43,000 They kicked the butt of everybody else we've tested. 592 00:32:43,000 --> 00:32:44,000 Well, those are your peeps. 593 00:32:44,000 --> 00:32:45,000 Are you proud? 594 00:32:45,000 --> 00:32:47,000 I am proud to be one of them. 595 00:32:47,000 --> 00:32:48,000 Yes. 596 00:32:50,000 --> 00:32:54,000 Still to come, things are looking up for the propane rocket. 597 00:32:54,000 --> 00:32:57,000 Three, two, one. 598 00:32:57,000 --> 00:33:01,000 And can serious cousin give sweet relief? 599 00:33:08,000 --> 00:33:12,000 The last launch of the propane gas tank looked close to perfection. 600 00:33:12,000 --> 00:33:17,000 They just couldn't manage the mythical 150 feet. 601 00:33:17,000 --> 00:33:19,000 So here's the plan. 602 00:33:19,000 --> 00:33:24,000 To replicate the results of the myth, Tori builds a 10-foot rocket launcher. 603 00:33:24,000 --> 00:33:30,000 He's also come up with a sure-fire way to punch out the perfect nozzle. 604 00:33:30,000 --> 00:33:32,000 I got a 9-millimeter pistol. 605 00:33:32,000 --> 00:33:36,000 It's in a ransom rest, and it's pointed at the base of our tank. 606 00:33:36,000 --> 00:33:40,000 Now, that ransom rest is connected to a window motor. 607 00:33:40,000 --> 00:33:43,000 All they need to do is run that motor. 608 00:33:43,000 --> 00:33:47,000 It'll pull the ransom rest lever and fire the gun. 609 00:33:47,000 --> 00:33:50,000 That's a whole new way to shoot a rocket. 610 00:33:50,000 --> 00:33:56,000 Back at the range for the very last time, Tori's rig is deployed in a matter of minutes. 611 00:33:56,000 --> 00:33:59,000 But the force of the bullet remains a concern. 612 00:33:59,000 --> 00:34:05,000 If we shoot all the way through making two holes, all of that pressure is going to vent out of the second hole. 613 00:34:05,000 --> 00:34:12,000 So, we selected a small enough caliber handgun to shoot in, but it doesn't come out. 614 00:34:12,000 --> 00:34:14,000 Let's hope they've guessed right. 615 00:34:14,000 --> 00:34:19,000 Now, we've taken everything we've learned from our previous tests and applied it to this last one 616 00:34:19,000 --> 00:34:21,000 in order to replicate the results of the myth. 617 00:34:21,000 --> 00:34:27,000 We got one tank to go to 60 feet, but we want our next one to go to 150 feet. 618 00:34:27,000 --> 00:34:31,000 The flares are set to light the flame once Grant turns on the gas. 619 00:34:31,000 --> 00:34:38,000 And the gun, safely mounted below the burners, will eventually be fired remotely by Tori. 620 00:34:38,000 --> 00:34:42,000 It's my favorite part, replicating the results. 621 00:34:42,000 --> 00:34:45,000 All right, the gun's on! The gun's on! 622 00:34:45,000 --> 00:34:47,000 We're on our way! 623 00:34:47,000 --> 00:34:50,000 We have the best jobs ever! 624 00:34:50,000 --> 00:34:52,000 Yeah! 625 00:34:53,000 --> 00:34:59,000 As the flames start licking the steel, they figure they've got around about an eight-minute wait. 626 00:34:59,000 --> 00:35:03,000 Whenever we have to wait for something to explode, it seems like time goes really, really slow. 627 00:35:03,000 --> 00:35:09,000 I know, right? And hopefully that bullet's only going to go through the bottom and give us a nozzle. 628 00:35:09,000 --> 00:35:15,000 So the watch continues for those telltale signs of imminent tank failure. 629 00:35:15,000 --> 00:35:18,000 You know what? I think it's round, dude. 630 00:35:18,000 --> 00:35:23,000 If they wait any longer, the tank might explode, so it's now or never. 631 00:35:23,000 --> 00:35:27,000 Firing the gun should breach the bottom and give them their rocket. 632 00:35:28,000 --> 00:35:31,000 In three, two, one... 633 00:35:36,000 --> 00:35:38,000 Oh, it's still spinning! 634 00:35:42,000 --> 00:35:48,000 Brilliant launch, and the suspense leading up to it was just a nail biter. 635 00:35:49,000 --> 00:35:56,000 With a perfect nine-millimeter nozzle and a launch tower, this really was a proper propane rocket. 636 00:35:56,000 --> 00:36:01,000 And if the tank had fins to keep its trajectory straight and true, well, who knows? 637 00:36:01,000 --> 00:36:04,000 When you take it back to the original myth, yes, we did not get the 150 feet, 638 00:36:04,000 --> 00:36:08,000 but we got something that really looked like a rocket. I think it's still plausible. 639 00:36:08,000 --> 00:36:10,000 I agree. Plausible. Plausible. 640 00:36:10,000 --> 00:36:14,000 Under the perfect storm of conditions, I think you could get a rocket. 641 00:36:26,000 --> 00:36:32,000 Adam and Jamie have already taken one for the team, then tortured some strangers 642 00:36:32,000 --> 00:36:35,000 to find out if some folk cope better with pain. 643 00:36:37,000 --> 00:36:39,000 So what's next? 644 00:36:39,000 --> 00:36:41,000 Well, allow me to demonstrate. 645 00:36:43,000 --> 00:36:44,000 Ow! 646 00:36:44,000 --> 00:36:46,000 Question. Did swearing make that hurt less? 647 00:36:46,000 --> 00:36:48,000 I don't know! 648 00:36:48,000 --> 00:36:52,000 Well, that's our next myth. Does swearing increase your tolerance to pain? 649 00:36:52,000 --> 00:36:53,000 Ah! 650 00:36:55,000 --> 00:37:00,000 It's a fair enough question, but testing it out poses obvious problems. 651 00:37:01,000 --> 00:37:03,000 We've cursed on the show before, plenty. 652 00:37:03,000 --> 00:37:07,000 But what you may not know is that not only do they bleep the sound of our curses, 653 00:37:07,000 --> 00:37:11,000 but often if our mouth is visible during a curse, they blur it so you can't read our lips 654 00:37:11,000 --> 00:37:13,000 and see what nasty things are coming out of us. 655 00:37:13,000 --> 00:37:16,000 And every time they have to blur it, it costs a lot of money. 656 00:37:16,000 --> 00:37:19,000 So I figure I'm going to do the editors a favor for this myth 657 00:37:19,000 --> 00:37:23,000 and actually make a piece of headgear which blurs my mouth for them. 658 00:37:23,000 --> 00:37:25,000 Then all they have to do is a bleep, and bleeps are cheap. 659 00:37:25,000 --> 00:37:28,000 All right, here goes the first test. 660 00:37:30,000 --> 00:37:33,000 Initiating the curse-proof tool. 661 00:37:34,000 --> 00:37:35,000 How about this? 662 00:37:41,000 --> 00:37:43,000 No blurring for the editors! 663 00:37:44,000 --> 00:37:49,000 Given that this setup is all the same, how is this test any different than the others? 664 00:37:50,000 --> 00:37:54,000 For this test, our sample size will be 5, 665 00:37:54,000 --> 00:37:57,000 except instead of averaging our data across all 5 test subjects, 666 00:37:57,000 --> 00:38:01,000 in this test, each subject will be compared to themselves. 667 00:38:02,000 --> 00:38:06,000 In order to isolate the act of swearing from the act of speaking, 668 00:38:06,000 --> 00:38:12,000 our test subjects are going to be repeating a number of non-swear words over and over again while they're undergoing the test. 669 00:38:13,000 --> 00:38:17,000 Carri-Torian Grant are sworn in to make up the 5. 670 00:38:17,000 --> 00:38:20,000 Now this is a test in two parts. 671 00:38:20,000 --> 00:38:26,000 First, the control, where they pre-select ordinary words to scream out when it hurts. 672 00:38:26,000 --> 00:38:29,000 Okay, there are your words. 673 00:38:29,000 --> 00:38:32,000 5 non-swear words. 674 00:38:32,000 --> 00:38:34,000 First, Grant. 675 00:38:35,000 --> 00:38:37,000 And then, Carri. 676 00:38:39,000 --> 00:38:42,000 Hang on as long as they can. 677 00:38:42,000 --> 00:38:43,000 Donut. 678 00:38:43,000 --> 00:38:44,000 Fudge. 679 00:38:44,000 --> 00:38:45,000 Blueberry. 680 00:38:45,000 --> 00:38:46,000 Sugar. 681 00:38:46,000 --> 00:38:47,000 Schnitzel. 682 00:38:47,000 --> 00:38:48,000 Oh goodness. 683 00:38:48,000 --> 00:38:49,000 Piston. 684 00:38:50,000 --> 00:38:53,000 But both fall way short of the 3-minute limit. 685 00:38:53,000 --> 00:38:54,000 I think that's it. 686 00:38:54,000 --> 00:38:56,000 That's got... 687 00:38:57,000 --> 00:38:59,000 Okay, I'm getting tunnel vision. 688 00:38:59,000 --> 00:39:01,000 I really can't last that long. 689 00:39:03,000 --> 00:39:04,000 What? 690 00:39:04,000 --> 00:39:06,000 Adam's the next one to chance his arm. 691 00:39:07,000 --> 00:39:10,000 Puppies, kittens, babies, ducklings. 692 00:39:10,000 --> 00:39:12,000 Oh, baby hippo. 693 00:39:12,000 --> 00:39:15,000 But again, he can't last more than a minute. 694 00:39:15,000 --> 00:39:21,000 Puppies, puppies, kittens, kittens, baby hippos, babies, ducklings. 695 00:39:22,000 --> 00:39:27,000 The next man to try to maintain some control is Tori. 696 00:39:27,000 --> 00:39:29,000 In 3, 2, 1. 697 00:39:30,000 --> 00:39:33,000 Gosh, damn it, it's cold. 698 00:39:34,000 --> 00:39:38,000 Tori's jumped the gun with his potty mouth. 699 00:39:38,000 --> 00:39:42,000 On a scale of 1 to 10, I think I peaked out about 15. 700 00:39:42,000 --> 00:39:45,000 And then he finds out he's in double trouble. 701 00:39:45,000 --> 00:39:48,000 Oh my God, it's completely numb. 702 00:39:48,000 --> 00:39:53,000 Tori, thanks for participating, but unfortunately we have to disqualify you. 703 00:39:53,000 --> 00:39:54,000 Why? 704 00:39:54,000 --> 00:39:59,000 Number one, you actually swore during the test, which is what the test is about. 705 00:39:59,000 --> 00:40:02,000 You weren't supposed to swear, so you're out because of that. 706 00:40:02,000 --> 00:40:05,000 And you also lasted past the three minutes. 707 00:40:05,000 --> 00:40:07,000 It could have been because of the swearing. 708 00:40:07,000 --> 00:40:08,000 We don't know. 709 00:40:08,000 --> 00:40:11,000 So I'm done getting tortured is basically what you're telling me. 710 00:40:11,000 --> 00:40:12,000 Yeah. 711 00:40:12,000 --> 00:40:14,000 But can Jamie do better? 712 00:40:14,000 --> 00:40:16,000 We're about to find out. 713 00:40:16,000 --> 00:40:17,000 Fudge! 714 00:40:17,000 --> 00:40:18,000 Fish! 715 00:40:19,000 --> 00:40:20,000 Lighten! 716 00:40:20,000 --> 00:40:21,000 Passenpeffer! 717 00:40:21,000 --> 00:40:25,000 Sure enough, he muddies the icy waters by going the distance. 718 00:40:25,000 --> 00:40:29,000 If you outlast the first test, that automatically disqualifies you for the second one. 719 00:40:29,000 --> 00:40:32,000 Because there's no improvement to be made. 720 00:40:32,000 --> 00:40:35,000 I did, and so I'm out. 721 00:40:35,000 --> 00:40:39,000 So we need two replacements for Jamie and Tori. 722 00:40:39,000 --> 00:40:45,000 Staffers Will and Yvette both take the test and qualify to fill out the chorus. 723 00:40:45,000 --> 00:40:52,000 Now for the PG part of the program, as Adam Fitzgrant with these swearing-in-the-wetter-toy 724 00:40:52,000 --> 00:40:53,000 That's fantastic. 725 00:40:53,000 --> 00:40:54,000 Yeah, okay. 726 00:40:54,000 --> 00:40:55,000 Go do the test. 727 00:40:55,000 --> 00:40:56,000 All right. 728 00:40:56,000 --> 00:40:57,000 See you later. 729 00:40:57,000 --> 00:41:00,000 This Will's sully grants image. 730 00:41:00,000 --> 00:41:03,000 But remember, it's all in the name of science. 731 00:41:03,000 --> 00:41:08,000 They're starting to lose meaning after a while. 732 00:41:08,000 --> 00:41:09,000 Oh, f**k! 733 00:41:09,000 --> 00:41:10,000 Ow! 734 00:41:10,000 --> 00:41:11,000 Okay, ow! 735 00:41:11,000 --> 00:41:12,000 Crap. 736 00:41:12,000 --> 00:41:15,000 Will and Yvette continue the Blue Streak. 737 00:41:15,000 --> 00:41:22,000 Then, sweet Carrie steps up, primed with words that would shock a long shorman. 738 00:41:22,000 --> 00:41:23,000 Ow! 739 00:41:23,000 --> 00:41:24,000 F**k! 740 00:41:24,000 --> 00:41:32,000 It actually seems to be working as Carrie goes on to beat the clock. 741 00:41:32,000 --> 00:41:38,000 And the last one to hope that his mother's not working is the one who's going to be 742 00:41:38,000 --> 00:41:42,000 working as Carrie goes on to beat the clock. 743 00:41:42,000 --> 00:41:46,000 And the last one to hope that his mother's not watching is Adam. 744 00:41:46,000 --> 00:41:47,000 All right. 745 00:41:47,000 --> 00:41:48,000 Five dirty words. 746 00:41:48,000 --> 00:41:49,000 Here they come. 747 00:41:49,000 --> 00:41:53,000 Now let's see if some cussin' makes Adam last longer. 748 00:41:53,000 --> 00:41:54,000 Here we go. 749 00:41:54,000 --> 00:41:56,000 Three, two, f**k! 750 00:41:56,000 --> 00:41:57,000 One. 751 00:41:57,000 --> 00:41:58,000 All right. 752 00:41:58,000 --> 00:41:59,000 F**k! 753 00:41:59,000 --> 00:42:00,000 F**k! 754 00:42:00,000 --> 00:42:01,000 Oh my God! 755 00:42:01,000 --> 00:42:02,000 F**k! 756 00:42:02,000 --> 00:42:09,000 Hard to say if the swearing is helping as Adam pulls out at just under a minute. 757 00:42:09,000 --> 00:42:12,000 There we go! 758 00:42:12,000 --> 00:42:17,000 I got to stop! 759 00:42:17,000 --> 00:42:27,000 Once he's tallied the timings, Jamie rolls out the stats on the swearing. 760 00:42:27,000 --> 00:42:29,000 Everybody was on the plus side. 761 00:42:29,000 --> 00:42:33,000 And the average increase is 30%. 762 00:42:33,000 --> 00:42:34,000 Wow! 763 00:42:34,000 --> 00:42:36,000 It is incredible. 764 00:42:36,000 --> 00:42:37,000 Shouting obscenities. 765 00:42:37,000 --> 00:42:38,000 F**k! 766 00:42:38,000 --> 00:42:45,000 Compared to non-cuss words, this actually increased on average their tolerance to pain by a whopping 767 00:42:45,000 --> 00:42:46,000 30%. 768 00:42:46,000 --> 00:42:51,000 But remember kids, like we always say, don't try this at home. 769 00:42:51,000 --> 00:42:52,000 Oh, f**k! 770 00:42:52,000 --> 00:42:53,000 Sweet relief. 771 00:42:53,000 --> 00:42:54,000 Ah! 772 00:42:54,000 --> 00:42:55,000 So where do we stand? 773 00:42:55,000 --> 00:42:56,000 Well, let's go down the list. 774 00:42:56,000 --> 00:42:59,000 Number one, the myth that women have a higher pain tolerance than men. 775 00:42:59,000 --> 00:43:01,000 Turns out to be true. 776 00:43:01,000 --> 00:43:02,000 Yup. 777 00:43:02,000 --> 00:43:07,000 Number two, the myth that redheads have a lower pain tolerance than regular people. 778 00:43:07,000 --> 00:43:09,000 Surprisingly, that's busted. 779 00:43:09,000 --> 00:43:13,000 And finally, the myth that cursing increases one's tolerance for pain. 780 00:43:13,000 --> 00:43:15,000 That would be confirmed. 781 00:43:15,000 --> 00:43:19,000 You know, while experiencing some of that pain may have sucked, I'm actually quite pleased 782 00:43:19,000 --> 00:43:21,000 with how definitive our results are. 783 00:43:21,000 --> 00:43:22,000 Well, you know what they say. 784 00:43:22,000 --> 00:43:23,000 What? 785 00:43:23,000 --> 00:43:24,000 No pain, no gain. 786 00:43:24,000 --> 00:43:25,000 Ha ha ha!