go off (one's) dot

To become crazy or mentally unsound; to become 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 has gone off her dot lately. You must have gone off your dot if you think that's a good idea!

Common Names:

Name	Pronounced	Usage
Gawain	gə-WAYN (English), GOW-ən (English)	Welsh, Arthurian Romance
Raimundo	-	Spanish, Portuguese
Hildred	-	English
Eugenia	e-oo-KHE-nyah (Spanish), e-uw-GEN-yah (Polish), yoo-JEE-nee-ə (English), yoo-JEEN-yə (English)	Italian, Spanish, Romanian, Polish, English, Ancient Greek (Latinized)
Dimitar	-	Bulgarian, Macedonian
Ayyub	-	Arabic