Bust means "punch" and chops means "mouth", so "to bust someone's chops" literally means to hit them in the mouth, but most of the time it means to give (someone) a hard time.
To bust someone's chops (nonliteral meaning) is to say or do something that interferes with someone's line of expertise or leadership in something. Chops = skills or simply a person's line of action, especially at the moment; and busting = to stop something or interfere with something.
You alwaysgotta bust my chops with some stupid remark during the TPS report meetings!
1.A prawn, chimp and/ or squirrel. 2.One who steals your ideas or creation and calls it their own. 3.Backstabbing nark.
"Thanks for ratting me out, buttchops". "Look at that buttchops feed his face with that catfood, looking like a prawn". "Hey, thats my idea you freggin buttchops"!