Question: what are busting your chops?
Answer: “Busting my chops” is a figurative way to say “stop hitting me in the face,” with “chops” meaning “jaw.” This “chop” traces to about 1513, the OED says, and also has some tenuous connection with another form of “chap,” meaning, the OED says without irony: “The jaws as unitedly forming the mouth; the biting and ...