I'll knock your block/head off!
knock (one's) block off
To strike someone with great force, usually in the head. If you insult me like that again, I'll knock your block off!
knock (one's) head off
To strike one with great force, usually in the head. Usually used as a threat or a hypothetical action. If you insult me like that again, I'll knock your head off! That football nearly knocked my head off. I'm glad I ducked in time!
knock (one's) teeth out
To beat or thrash one with physical blows, especially in the head or face. Often used as a threat. If you insult me like that again, I'll knock your teeth out! A: "What happened between Tony and that bouncer last night?" B: "The bouncer took him outside and knocked his teeth out."
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
I’ll knock your ˈblock/ˈhead off!(British English, spoken) used to threaten somebody that you will hit them
Farlex Partner Idioms Dictionary © Farlex 2017