off rocker

*off one's rocker

and *off one's nut; *off one's trolley

Fig. crazy; silly. (*Typically: be ~; go ~.) Sometimes, Bob, I think you're off your rocker. Good grief, John. You're off your nut.

Slang

Out of one's mind; crazy.

Name	Pronounced	Usage
Barnabas	BAHR-nah-bahs (German), BAHR-nə-bəs (English)	German, English (Rare), Biblical, Biblical Latin, Biblical Greek
Sissy	SIS-ee	English
Norah	['nɔ:rə]
Reinhard	-	German, Ancient Germanic
Caelestinus	-	Late Roman
Brad	BRAD	English