打肚皮官司

dǎdùpíguānsi ㄉㄚˇ ㄉㄨˋ ㄆㄧˊ ㄍㄨㄢ ˙ㄙ

    • to weigh things up silently in one's own mind

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
to fight a lawsuit in one's belly
Meaning
To weigh things up silently in one's own mind, privately arguing over options. Wry.

Sources