戳心窝

Traditional (Taiwan): 戳心窩

chuōxīnwō ㄔㄨㄛ ㄒㄧㄣ ㄨㄛ

    • to say something that hits someone's sorest point and hurts deeply

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
stab the heart
Meaning
A variant of 捅心窝子: to say something that hits someone's sorest point and hurts deeply.

Sources