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
Dajana	DAH-yah-nah	Serbian, Croatian
Homeros	-	Ancient Greek
SeÁN	SHAWN	Irish
RÜDiger	-	German
Marita (2)	-	Swedish, Norwegian
Adeline	['ædili:n]