This reminds me - I took a post-college trip out west with a friend and we made camp next to a couple of real stoners.
So we mosied over and started up a conflab...
...one of the guys had a tank of nitrous in his car trunk that he used to fill a trash bag to which he had affixed a nozzle.
He was huffing this shit right next to the camp fire when all of a sudden he fell into the flames.
So we dragged his ass out of it as fast as we could. I thought we were gonners.