Never give a sucker an even break

1. Don't hesitate to take advantage of a fool.

Notes

This saying served as the title for one of the films of the comedian W. C. Fields .

Idioms and Phrases

Don't allow a person who's easily duped a fair chance, as in He's always trying to give out expired coupons for his store, firmly believing in never giving a sucker an even break . Probably a direct quotation, it has been attributed to showman P. T. Barnum (responsible for the oft-quoted “There's a sucker born every minute”); and comedian W. C. Fields (who popularized it in one of his films); and theater manager Edward Francis Albee, the most probable of the three. [ Slang ; early 1900s]