Diarrhea, gas, butt sauce
, butt rust
, "bad butt," or any other form of lower-intestinal turbulance caused by eating at Taco Del Mar restaurant.
Dude #1: Yo', man, what's that smell?! Did something just DIE?!
Dude #2: Sorry, bro'. I ate a bean burrito for lunch, and it gave me Taco Del M'arse.