give (one) a knuckle sandwich
slang To punch one in the mouth. If you keep mocking me, I'm going to give you a knuckle sandwich! What are you looking at, punk? Want me to give you a knuckle sandwich? OK, tough guy, one more insult and I'll give you a knuckle sandwich!
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.