off your rocker
Also found in: Acronyms.
off (one's) rocker
Crazy; mentally unsound; extremely foolish. I'm going to go off my rocker if I have to hear that song one more time! 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!
off your rockerINFORMAL
If someone is off their rocker, they are crazy. He must be off his rocker, paying that much for a shirt! Note: You can also say that someone goes off their rocker to mean that they become crazy. Sometimes I think he's going off his rocker.
off your rockercrazy. informal
A rocker in this expression is a concave piece of wood or metal placed under a chair or cradle enabling it to rock back and forth.
1932 Evelyn Waugh Black Mischief It's going to be awkward for us if the Emperor goes off his rocker.