Liquid Nitrogen - Not good for the stomach...

Now the reason I'm doing this is to tell a story. A story that comes from the Darwin Awards. The 2 guys in question were on an oil rig - bored, there's nothing to do out there, they're out there for weeks on end - one of them said to the other: I bet you I can hold dry ice in my mouth for a minute. So he can put the solid dry ice in his mouth and as it was beginning to warm and evaporate - or sublime I should say - he could blow the cool gas out of his mouth and he could flick it up and down with his tongue. Bouncing it around, so it wasn't touching any part of his mouth for any long period of time. The other bloke says: Double or Nothing. I can hold liquid nitrogen in my mouth for a minute. Okay? Now liquid nitrogen is much, much colder its also a liquid - so liquids take the shape of their container. So it's sitting in the bottom of his mouth and he's just going: Well this hurts. So rather than loose the bet, what does he do? He swallows it. [groans] Okay so what I'm going to try and do is swallow it - with my balloon - I'm not going to swallow it, but use the balloon to swallow it. See if I can trap as much of it as possible. Now you can see in the bottom there, there's still quite a lot of liquid left over. Yet the balloon is already inflated to that size. And you can still see I've got quite a lot of liquid at the bottom there. What I'm going to do now is perform a bit of a trick. And try and put the liquid inside the balloon. So if I turn it like that... You can see it's inside the bottom there, okay? Can we all see the liquid forming at the bottom? Yeah? Something is dripping! What is that dripping? You can see it dripping on the table here. Well water is that white stuff that's coming off as like cloud... Oxygen! Very good. Someone get a match. Okay. This stuff goes off. I won't do that cause I might get in trouble. But, we're forming liquid oxygen on the bottom where its condensing out of the atmosphere because its so, so cold there. And because oxygen is only about 20% of the atmosphere we're only getting a very small amount dropping out. There maybe be a bit of nitrogen involved in that as well but most of the nitrogen is inside the balloon and the outside of the balloon isn't quite that temperature of minus 1. BOOM! WOAH! Wooooo! That's a good one!