Mad As a Hatter
A mad as a hatter is a super ugly guy, usually from the Middle East, who is so crazy he might explode your butt with some Muslim terrorist nonsense.
My friend called my cousin mad as a hatter because he had a beard like a goat.
My neighbor is mad as a hatter and wears a turban like a madman.
My brother said the guy at the gas station was mad as a hatter because he was eating a whole chicken.