木头人

Traditional (Taiwan): 木頭人

mùtourén ㄇㄨˋ ˙ㄊㄡ ㄖㄣˊ

    • person who is unthinking and unresponsive
    • wooden dummy

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
wooden person
Meaning
A person who doesn't think and responds slowly, or doesn't react at all. Mildly insulting.

Sources