Ok, I remember finding this one story on Yahoo Groups. The plot was that this one girl wanted to embarass this other girl at a party by making her fart. She and her friend decided to spike the salsa dip with a special concoction. Well, the girl they want to embarass arrives, and eats all of the salsa. Then, we learn that the girl has a medical condition that makes it impossible for her to fart.

I forget what happens after that, but if anyone has that story, I'd be very greatful if you posted it