Definition of bang or knock people's heads together in English:

bang (or knock) people's heads together

Reprimand people severely, especially in an attempt to stop them arguing.
More example sentences
  • This lying, prevarication and knocking people's heads together is standard practice.
  • I just think it's fun to knock people's heads together and call attention to how silly arguing over NOTHING can be.
  • We were inches away and if he had not taken that initiative - something John is very good at - of knocking people's heads together and forcing them to come to an agreement to settle matters or to say ‘we cannot make an agreement’, that would not have been done.
See parent entry: head

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Word of the day flippant
Pronunciation: ˈflɪp(ə)nt
adjective
not showing a serious or respectful attitude