have bats in one's belfry
To be crazy or eccentric.
Anyone declaring himself Emperor of San Francisco probably had bats in his belfry.
bats
UK /bæts/ US /bæts/
name 3adj 1
Definitions
adj
1
Mad, insane.
You must be bats to go out in the cold without a coat on.
"Don't be so bats, Binns! Why should anyone want to pinch just one boot?" "He might have been a chap with only one leg."
name
1
A Northeast Caucasian language of the Nakh family, spoken in Georgia.
name
1
A commune in Landes department, Nouvelle-Aquitaine, France.
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