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
Farlex Dictionary of Idioms.

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
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

knock someone's block off

Beat up someone, as in If he doesn't leave at once, I'll knock his block off. This hyperbolic term employs block in the sense of "head," a usage dating from the 1600s. The idiom, however, dates only from about 1900. Also see beat the living daylights out of.
See also: block, knock, off
The American Heritage® Dictionary of Idioms by Christine Ammer.

knock someone's block off

hit someone very hard in anger. informal
Block is used here in its informal sense of ‘head’.
See also: block, knock, off
Farlex Partner Idioms Dictionary

I’ll knock your ˈblock/ˈhead off!

(British English, spoken) used to threaten somebody that you will hit them
See also: block, head, knock
Farlex Partner Idioms Dictionary
See also:
  • knock block off
  • knock someone's block off
  • I'll knock your block/head off!
  • block
  • knock someone’s block off
  • cut off at the pass, to
  • the block is hot
  • What will that prove?
  • go on the block
  • block off