I Wasn’t Born Yesterday

Meaning of Idiom ‘I Wasn’t Born Yesterday’

When someone says “I wasn’t born yesterday” they mean that they are not naive or gullible and they are not easily cheated, fooled, or deceived. They are basically saying they are “wise to the ways of the world.”


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Examples Of Use

“This car isn’t worth half what you’re asking,” said Carl. “What, do you think I was born yesterday?”

“You really expect me to believe such a lame excuse?” said Mr. Peterson. “I wasn’t born yesterday, you know!”

I wasn't born yesterday idiom meaning

Origin

Used since the late 1800’s.

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