dumperkin
A dumperkin is when you are expecting to drop a fully loaded dump but actually only pop out a couple walnuts instead.
Roommate 1: Dude after that bender last night I had to shit so bad this morning.
Roommate 2: Aww man, what the hell, I hope you didn't destroy the bathroom.
Roommate 1: Don't sweat it bro, turned out to only be a dumperkin
Roommate 2: Aww man, what the hell, I hope you didn't destroy the bathroom.
Roommate 1: Don't sweat it bro, turned out to only be a dumperkin