be born yesterday

To be na?ve or easily deceived. Often used in the phrase "I wasn't born yesterday." Oh, you expect me to believe that you've been in your room all night and didn't just sneak in the house a few minutes ago? Well, I wasn't born yesterday—and I heard the door open! Do you think I was born yesterday? There's no way that e-mail isn't a scam!

Common Names:

Name	Pronounced	Usage
Isha	-	Indian, Hindi, Marathi, Hinduism
Cosme	-	Portuguese, French
Laurelle	LAWR-əl	English (Rare)
Nephele	NEF-el-ee (English)	Greek Mythology
Puneet	-	Indian, Hindi, Marathi
Nicolaus	NEE-ko-lows (German)	German, Ancient Greek (Latinized)