fool me once

First time tricked

Fool me once is the opening of the proverb "fool me once, shame on you; fool me once, shame on me"—meaning if someone deceives you twice, you bear responsibility for not learning from the first time.

The phrase often appears truncated, with the rest implied: Fool me once... I'm not falling for that again.

It signals wariness born from past experience.

Related

false promises · trick · twice · proverb · lesson · burned · wise · cautious · skeptical · liar · con · scam · red flag · warning · bitter · duped · vigilant · sting

Categories
Opposites
accountability for deception

fool me onceshame on me

Accepting blame for error

asked for it · self-inflicted

trust orientation

fool me onceblind trust

Complete unquestioning confidence

eternal optimist · turn the other cheek · open book · benefit of the doubt · forgive and forget

Family

fool, fools, fooled, fooling, foolish, foolishly, foolishness, foolery, foolhardy

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G