Went off her rocker - Idioms by The Free Dictionary
go off (one's) rocker (redirected from went off her 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
Around the time Bruce's wife Emma had the baby, it was this scary sense of, 'Demi went off her rocker
STRESSED-OUT Posh Spice went off her rocker
after arriving in Scotland yesterday to help push her first solo single to the number one spot.
My fiancee Claire went off her rocker
when she heard about it," said Michael.