be off (one's) nut

slang To be crazy and/or wacky. Usually used humorously. Don't listen to a word he says, he's off his nut! You're off your nut if you think that plan will work.

Common Names:

Name	Pronounced	Usage
Salacia	-	Roman Mythology
ClÍOna	-	Irish
Amand	AH-mahnt	German
Adel	-	Arabic
Atalia	-	Hebrew
Roman	rah-MAHN (Russian), RAW-mahn (Polish)	Russian, Polish, Czech, Slovak, Ukrainian, Slovene, Croatian, German