be off (one's) dot

To be crazy or mentally unsound; to be extremely foolish or foolhardy. I'm going to go off my dot if I have to hear that blasted song once more! I think Jane's grandmother is a little off her dot these days. You must be off your dot if you think that's a good idea!

Common Names:

Name	Pronounced	Usage
Marcial	-	Spanish
Ashby	['æʃbi]
Karola	KAW-ro-law (Hungarian), kah-RO-lah (German)	Hungarian, German
Afra (2)	-	Arabic
Indigo	IN-di-go	English (Rare)
Nerva	-	Ancient Roman