pound in (one's) head(redirected from pounding in their heads)
pound in (one's) head
To give one a severe, violent beating (not necessarily solely on the head). The police officer threatened to pound in the man's head if he didn't stop resisting arrest. You watch your mouth, or I'll pound in your head!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.