go off (one's) rocker

To become crazy or mentally unsound; to become extremely foolish or foolhardy. I'm going to go off my rocker if I have to hear that blasted song once more! I think Jane's grandmother has gone off her rocker lately. You must have gone off your rocker if you think that's a good idea!

Common Names:

Name	Pronounced	Usage
Cecelia	sə-SEE-lee-ə, sə-SEEL-yə	English
Cruzita	kroo-THEE-tah (Spanish), kroo-SEE-tah (Latin American Spanish)	Spanish
Constantinus	-	Late Roman
Amos	AY-məs (English)	English, Hebrew, Biblical, Biblical Latin, Biblical Greek, Biblical Hebrew
Bohuslava	bo-hoo-SLAH-vah (Ukrainian)	Czech, Ukrainian
Bettie	BET-ee	English