v. to abruptly end someone's sentence by talking over them.The action is usually received as an act of hostility.
Originated in Atlanta, Ga.
Person A: "I didn't know that was the rest of the...
Person B:"Just shut the fuck up. You don't know shit, that's your fucking problem. You're a stupid trick."
Person A: ...
Person C: DAMN! chomp off!
-end scene-
to take a dump
"Hold on man, I gotta go chomp off a growler."
"I'm gonna chomp off a growler while you finish getting ready."