have rocks in head
have rocks in (one's) head
To be thoroughly stupid, crazy, absurd, incorrect, etc. You must have rocks in your head if you think the bank will approve you for another loan.
See also: have, head, rock
Farlex Dictionary of Idioms.
have rocks in one's head
Fig. to be silly or crazy. John is a real nut. He has rocks in his head. I don't have rocks in my head—I'm just different.
See also: have, head, rock
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
rocks in one's head, to have
To say or do something crazy, ridiculous, or stupid. This slangy expression, often used in a not very polite response to a bizarre statement or action, dates from about 1940. Presumably it accuses the person of having rocks instead of brains, as in “Drive all of two blocks to get the paper? Do you have rocks in your head?”
See also: have, rock
The Dictionary of Clichés by Christine Ammer
- have rocks in (one's) head
- rocks in one's head, have
- have got rocks in (one's) head
- What are you on?
- What color is the sun in your world?
- what planet are you on?
- What planet is (someone) on?
- what planet is someone on?
- What planet is (someone) from?
- garbage in, garbage out