裝孫子

Simplified: 装孙子

zhuāngsūnzi ㄓㄨㄤ ㄙㄨㄣ ˙ㄗ

    • to act meek and pitiful
    • to play dumb to dodge blame

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
act the grandson
Meaning
To act meek and pitiful, or to play dumb and muddled, usually to dodge trouble or blame. Colloquial and slightly mocking.

Sources