碰破头

Traditional (Taiwan): 碰破頭

pèngpòtóu ㄆㄥˋ ㄆㄛˋ ㄊㄡˊ

    • to be so crowded that people keep bumping into each other

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
to bump heads till they break
Meaning
Describes a place so crowded that people keep bumping into each other.

Sources