pound 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!
See also: head, pound

pound someone's head in

Fig. to beat someone, especially about the head. Fred looked like he wanted to pound Mike's head in; he was so mad! You want me to pound in your head?
See also: head, pound