What's got into?

What's got(ten) into someone?

What is bothering someone?; What caused someone to act that way? (Past or perfect only. The has is contracted except for emphasis.) I just don't know what's gotten into her. I don't know what got into me.

Common Names:

Name	Pronounced	Usage
BŁAŻEj	BWAH-zhay	Polish
Shlomo	-	Hebrew
Thiemo	-	German, Dutch, Ancient Germanic
Hester	['hestə]
Daumantas	-	Lithuanian
Lital	-	Hebrew