Pierre, one of my male friends was walking with a mate, when nature called. He ducked by a tree for a poo - when he did (quote) "the loudest fart he'd ever heard!!!!".

The sound reverberated so loudly across the countryside, that he became utterly incapacitated with laughter. He couldn't even wipe his bum.

Several minutes later, his mate wandered back wondering why he'd not appeared again, and found him still weak as a baby with hysterics, with his pants and jeans around his ankles...