be off (one's) rocker

(redirected from was off my rocker)

be off (one's) rocker

To be crazy or mentally unsound; to be extremely foolish or foolhardy. I think Jane's grandmother is a little off her rocker these days. You must be off your rocker if you think that's a good idea!
See also: off, rocker
References in periodicals archive ?
He sounded off about my Radio 1 petition to have Christmas banned until December 1, claiming that I was off my rocker.