off (one's) rocker

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!
See also: off, rocker
Farlex Dictionary of Idioms.

*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.
See also: off, rocker
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

off one's rocker

Also, off one's nut or trolley . See off one's head.
See also: off, rocker
The American Heritage® Dictionary of Idioms by Christine Ammer.

off your rocker

INFORMAL
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.
See also: off, rocker
Collins COBUILD Idioms Dictionary, 3rd ed.

off your rocker

crazy. 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.
See also: off, rocker
Farlex Partner Idioms Dictionary

ˌoff your ˈrocker

(informal, spoken, especially British English) (of a person) crazy: Spend a thousand pounds on a dress! Are you off your rocker?
See also: off, rocker
Farlex Partner Idioms Dictionary

off one’s rocker

mod. silly; giddy; crazy. (see also rocker.) That silly dame is off her rocker.
See also: off, rocker
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

off (one's) rocker

Slang
Out of one's mind; crazy.
See also: off, rocker
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • off one’s rocker
  • off one's rocker
  • off rocker
  • off your rocker
  • off (one's) dot
  • rocker
  • (one) is off (one's) rocker
  • be off (one's) rocker
  • be off (one's) dot
  • go off (one's) rocker