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
Ronen	-	Hebrew
Imrus	-	Hungarian
Jonas (2)	YO-nahs (German), JO-nəs (English)	Swedish, Norwegian, Danish, German, Dutch, Biblical
Liesbeth	LEES-bət	Dutch
Shlomit	-	Hebrew
Alojzy	ah-LOI-zi	Polish