打出界球

dǎchūjièqiú ㄉㄚˇ ㄔㄨ ㄐㄧㄝˋ ㄑㄧㄡˊ

    • to break the rules
    • to go beyond what is allowed

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
to hit the ball out of bounds
Meaning
To do something that breaks the rules or goes beyond what is allowed. Mildly critical.

Sources