blow yourself up
To release a particularly nasty,smelly fart. Usually happens after eating Mexican food or something similar (e.g. Taco Bell).
Example:
Johnny watched his friend Ben wolf down five bean burritos. Johnny told Ben "you know you're going to blow yourself up in a few minutes."
Johnny watched his friend Ben wolf down five bean burritos. Johnny told Ben "you know you're going to blow yourself up in a few minutes."