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to knock one's block off
01
to severely beat someone, often said as a threat
Idiom
InformalWhat is the origin of the idiom "knock one's block off" and when to use it?
The idiom "knock one's block off" is an informal and colorful expression that originated in the early 20th century. It means to punch or strike someone in the head with great force, often as a threat or in a fit of anger. The "block" refers to the head, and the phrase is used figuratively to emphasize the idea of delivering a powerful blow to someone's cranium.
Example
If he keeps insulting people, someone's going to knock his block off one of these days.
When the prank went too far, she warned her friend that she'd knock his block off if he didn't stop.
