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
Ellsworth	['elzwə:θ]
Manlius	-	Ancient Roman
Artemius	-	Ancient Greek (Latinized)
Liselott	-	Swedish
Arthur	AHR-thər (English), ar-TUYR (French), AHR-toor (German), AHR-tur (Dutch)	English, French, German, Dutch, Norwegian, Danish, Swedish, Welsh Mythology, Arthurian Romance
Valeriy	vah-LYE-ree	Russian