I wasn't born yesterday

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I wasn't born yesterday

I am not extremely naïve, gullible, or unintelligent. When one is referred to as "born yesterday," they are being likened to a newborn baby, who has no experience with the world. Don't think you can fool me with that old ruse. I wasn't born yesterday, you know. Of course I know that major political issues can't be fixed overnight. I wasn't born yesterday.
See also: born, yesterday

I wasn't born yesterday

used to indicate that you are not foolish or gullible.
See also: born, yesterday

I wasn’t born ˈyesterday

(spoken) used to say that you are not stupid enough to believe what somebody is telling you: You don’t expect me to believe that, do you? I wasn’t born yesterday, you know.
See also: born, yesterday