Have bats in the belfry
Meaning
To be eccentric, slightly mad, or to have peculiar ideas.
Origin
Imagine a dusty, forgotten church belfry, high above the quiet village. Within its shadowy confines, where great bells usually hang, a colony of bats flits and darts erratically, their movements wild and unpredictable. This chaotic image perfectly captured the essence of a disordered mind. The belfry, a tower-like structure, came to be a metaphorical stand-in for the human head, the place where one's thoughts and sanity reside. If bats—creatures of the night, known for their seemingly random flight—were residing there instead of well-ordered 'bells' of thought, it meant one's mind was operating outside the realm of reason, leading to the vivid idiom that entered common parlance in the late 19th century to describe someone eccentric or mad.
Examples
- My Uncle Bob is a brilliant inventor, but he definitely has bats in the belfry with some of his wilder theories.
- People used to say the old recluse had bats in the belfry because he talked to his garden gnomes and wore mismatched shoes.