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
ArnbjÖRg	-	Ancient Scandinavian, Icelandic
CÉZar	-	Portuguese (Brazilian)
Liselotte	LEE-ze-law-tə (German)	Danish, Swedish, Dutch, German
Pavelu	-	Old Church Slavic
Olivier	o-lee-VYE (French), O-lee-veer (Dutch)	French, Dutch
Sissy	SIS-ee	English