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...
the definition of chink defines it as "a tinyhole or crack, usually in a wall", therefore, the word asschink is actually the equivalent of the word asshole, asshole=asschink.
P1: "Hey, i just got laid, by ur girlfriend!"
P2: "you f**kin asschink, get back here!"