knock (one's) head off

(redirected from knock their heads 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!
See also: head, 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
References in periodicals archive ?
But I did say that if Britain stood up the Aussie defence, didn't try to knock their heads off and ran the angles more, we would have a chance.
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