be not much between the ears

be not much between the ears

To be rather stupid, dull, or dimwitted; to not have much common sense or basic intelligence. She seems nice enough, but I get the sense that there might not be much between the ears. Jake's boyfriend is incredibly attractive, but there isn't much between the ears from what I can tell.
See also: between, ear, much, not
Farlex Dictionary of Idioms.
See also:
  • not have much between the ears
  • ain't got a grain of sense
  • ain't got a lick of sense
  • ain't got the sense God gave geese
  • horse sense
  • not know enough to come in out of the rain
  • common
  • ((do) you) know what I mean
  • ((do) you) know what I'm saying
  • NTTAWWT