Bang your heads together - Idioms by The Free Dictionary
bang/knock your/their heads together (redirected from bang your heads together)
knock (people's) heads together
To scold two or more people harshly. If you two do something this stupid again, I'm going to knock your heads together!
bang/knock your/their ˈheads together (informal) force people to stop arguing and behave in a sensible way: I’d like to bang those stupid politicians’ heads together.
References in periodicals archive
I can't hear myself |think I'll bang your heads together
|if you don't stop arguing And so on and so and so on.
However, if things got really out of control, my dad would shout: "If I have to stop this car, I'll bang your heads together
I'd just bang your heads together
and keep on banging until some sense was knocked into a selfish couple whose hatred for each other appears greater than their love for their child.