snake oil salesman
以欺詐手段推銷偽劣產品的商人
口語·形容騙人的推銷員
英文釋義
someone who sells fake or fraudulent products or schemes, often making false claims about their effectiveness or benefits
例句
That guy is a snake oil salesman who sells fake health supplements.
典故來源
源自19世紀美國西部，小販兜售號稱能治百病的“蛇油”，實為假藥，后指欺詐推銷者。