A slang term to describe a person's asshole.
-This especially applies in describing someone's asshole when they have eaten anything from taco bell, or any food
that unknowingly gives you diarrhea.
-Can also be applied when someone is getting literally/figuratively fucked in the asshole.
Person 1: How have you been holding up in online class recently?
Person 2: Honestly, schools been fucking me straight in the burrito buster, I'm getting 70 assignments a week, this is bullshit.