pound someone's head in
pound (one's) head in
To give one a severe, violent beating (not necessarily solely on the head). The police officer threatened to pound the man's head in if he didn't stop resisting arrest. You watch your mouth, or I'll pound your head in!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
pound someone’s head in
tv. to beat someone. Talk nice to him, or he’ll pound your head in.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.