磕頭碰腦　

◎ 磕頭碰腦 kētóu-pèngnǎo

(1) [bump against things on every side;push and bump against one another]∶指人多、東西多互相擠碰

一大群人磕頭碰腦地擠著看熱鬧

(2) [not get along]∶比喻人與人之間鬧矛盾

街坊鄰里有個磕頭碰腦的事,他都出面調(diào)停