have got bats in (one's) belfry

have got bats in (one's) belfry

To be crazy; to act, think, or behave in a foolish or nonsensical manner. Tommy has got bats in his belfry if he thinks he can convince our mother to let him get a tattoo for his birthday. There's an old lady who stands on the corner yelling at strangers all day. I think she's got bats in her belfry.
See also: bats, belfry, have
Farlex Dictionary of Idioms.
See also:
  • have bats in (one's) belfry
  • have bats in belfry
  • have bats in one’s belfry
  • have bats in the belfry
  • bats in one's belfry, have
  • belfry
  • have toys in the attic
  • have a few kangaroos loose in the top paddock
  • have kangaroos in (one's)/the top paddock
  • have kangaroos in the top paddock