Going off his rocker - Idioms by The Free Dictionary
go off (one's) rocker (redirected from going off his rocker)
go off (one's) rocker
To become crazy or mentally unsound; to become extremely foolish or foolhardy. I'm going to go off my rocker if I have to hear that blasted song once more! I think Jane's grandmother has gone off her rocker lately. You must have gone off your rocker if you think that's a good idea!
References in periodicals archive
Dave Simpson, from Perth, thought he was going off his rocker
when he saw a TV clip of the film Quadrophenia.
This season's been a terrible shocker And the owner's going off his rocker
Our wingers are slow, they have no pace And we're bottom of the league in last place