舌頭短

Simplified: 舌头短

shétouduǎn ㄕㄜˊ ˙ㄊㄡ ㄉㄨㄢˇ

    • to find it hard to speak up
    • to have no answer because one is in the wrong

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
short tongue
Meaning
To find it hard to speak up, or to have no answer because you're in the wrong.

Sources