Not be born yesterday

Definition 1 of 1

Pro Tip 1/3

Informal Expression

Used in casual conversation, might not be suitable in very formal or professional settings. Slide

You can't fool me with that excuse; I wasn't born yesterday.

Pro Tip 2/3

Sarcasm Potential

Often spoken with a sarcastic tone to emphasize the speaker's skepticism. Slide

He said he's never played before and then won the game – sure, I wasn't born yesterday!

Pro Tip 3/3

Asserting Intelligence

Implies the speaker is experienced and cannot be easily tricked or taken advantage of. Slide

I wasn't born yesterday; I recognize a scam when I see one.

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