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
Kurtis	KUR-tis	English
Madai	-	Biblical
Sid	[sid]
Kjellfrid	-	Norwegian
Marnie	MAHR-nee	English
Theia	-	Greek Mythology