bats in the belfry
An antiquated term for insanity, madness. Belfry: the top of a bell tower on a church, where the bell is housed. Often infested with bats, who enjoy the darkness and seclusion of the place.
Example:
She's got bats in the belfry, sqirrels in the attic, owls up in the loft. She's apeshit, bughouse, batty, mad as a march hare.
She's got bats in the belfry, sqirrels in the attic, owls up in the loft. She's apeshit, bughouse, batty, mad as a march hare.