拿大头

Traditional (Taiwan): 拿大頭

nádàtóu ㄋㄚˊ ㄉㄚˋ ㄊㄡˊ

    • to treat someone as a sucker who foots the bill
    • to fleece someone

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
take the big head
Meaning
To treat someone as a sucker who pays for everything, or to fleece them. Colloquial.

Sources