When your Diarrhea burns your butt hole as it's coming out. Usually happens after you eat a lot of spicy food and the extra capsaicin decided to leave the hard (or soft, liquid) way.
Emi: Did you see Luke?
Mitch: Nah, he's back in his dorm with a bad case of Burning Diarrhea.
Emi: Oh shit that sucks. What did he eat?
Mitch: Day old B-Dubs.
Emi: Oh, well he should of say that coming.
