fruitcake

noun

1. (countable, uncountable)A cake containing dried fruits and, optionally, nuts, citrus peel and spice; usually served in celebration of weddings and Christmas.
2. (colloquial, countable, derogatory, uncountable)A crazy or eccentric person.

   “Easy, feller, easy. She's a fruitcake.”

   “One of the loafers kept calling down, "Hey you, Blondie, you like fruitcake kids like that?"”

   “"Ukip is sort of a bunch of … fruitcakes and loonies and closet racists mostly," Mr Cameron told LBC radio.”

3. (US, colloquial, countable, dated, derogatory, slang, uncountable)A homosexual male.