knock (one's) block 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!
See also: block, knock, off

knock someone's block off

Sl. to hit someone hard in the head. Wilbur almost knocked Tom's block off by accident. He threatened to knock my block off if I didn't do as I was told.
See also: block, knock, off

I’ll knock your ˈblock/ˈhead off!

(British English, spoken) used to threaten somebody that you will hit them
See also: block, head, knock