卖膏药

Traditional (Taiwan): 賣膏藥

màigāoyao ㄇㄞˋ ㄍㄠ ˙ㄧㄠ

    • to deceive people with smooth talk
    • to peddle snake oil

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
sell plasters
Meaning
Short for 卖狗皮膏药: to deceive with smooth talk. See that entry.

Sources