Slang definitions & phrases for knock someone's block off
knock someone's block off
verb phrase
To hit very hard; give a severe trouncing; clobber: One more word and I'll knock your block off
[1908+; block, ''head,'' is found by 1635]
Idioms and Phrases with knock someone's block off
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