Wait till you fart, cup your hands around your asshole(literatly) and trap the gas into your hand. Then inhale the gas. It puts me RIGHT to sleep... No kidding.
Okay, yeah, honestly that's one of the most revolting things I've heard in a long time. Not so much because of the actual mechanics of the situation, but because I've seen your picture, I know what you look like, and as soon as I read that I uncontrollably visualized that happening. I fucking hate you.