1.) A rather noticable piece of shit from someone's ass.
"Don't look now, but I think that guy just less loose an asschunk!"
"Don't eat the asschunk!"
when you grunt a loaf and chunks of hardened poo drop into the toilet
"jon ate too much pasta and got ass chunks the next morning"
Blowing chunks out your ass after eating a volatile substance, usually a few bean burritos or any product from taco bell.
Dude, I shouldn't have ate those burritos, I blew asschunks all night.
Don't use that restroom! Someone blew asschunks in there and it reeks!
I don't want to eat taco bell man, it gives me serious asschunks whenever i do...
n. 1) A chunk from an ass. 2) Chibi
Chibi is an asschunk