出了山门打师父

Traditional (Taiwan): 出了山門打師父

chūleshānméndǎshīfu ㄔㄨ ˙ㄌㄜ ㄕㄢ ㄇㄣˊ ㄉㄚˇ ㄕ ˙ㄈㄨ

    • to turn on a benefactor ungratefully

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
once out of the temple gate, hit one's master
Meaning
To be ungrateful and turn on someone who helped you. Critical.

Sources