充冤大頭

Simplified: 充冤大头

chōngyuāndàtóu ㄔㄨㄥ ㄩㄢ ㄉㄚˋ ㄊㄡˊ

    • to be the sucker who wastes money or gets taken advantage of

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
play the wronged big head
Meaning
To be the sucker who wastes money or is taken advantage of. Self-mocking or critical.

Sources