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
Aramis	-	Literature
Brittani	BRIT-nee, BRIT-ə-nee	English (Modern)
Nthanda	-	Southern African, Tumbuka
Angelia	an-JEL-ee-ə	English
Gyles	JIELZ, JIE-əlz	English (Rare)
Abdullah	‘ahb-DAH:L-lah (Arabic), ‘ahb-DOOL-lah (Arabic), ahb-dool-LAH (Turkish)	Arabic, Turkish, Malay, Indonesian