Fig. to scold some people; to get some people to do what they are supposed to be doing. If you kids don't quiet down and go to sleep, I'm going to come up there and knock some heads together.The government is in a mess. We need to go to Washington and knock some heads together.
tv. to scold some people; to get some people to do what they are supposed to be doing. Do I have to come in there and knock some heads together, or will you kids settle down?