have nothing between the earshave nothing between the/(your) ears
informal to be stupid.
He's very good-looking but has absolutely nothing between the ears, I'm afraid.
(redirected from have nothing between the ears)
have nothing between the/(one's) ears
To be rather stupid, dull, or dimwitted; to not have much common sense or basic intelligence. The expression is a way of saying that one has no brain. She seems nice enough, but I get the sense that she has nothing between her ears.Jake always goes out with really attractive guys that have nothing between the ears.