Green’s Dictionary of Slang

botty-basher n.

also botty-bandit
[bottie n. + bash v. (7)]

(Aus./UK juv.) a male homosexual.

[Aus]J. Birmingham Tasmanian Babes Fiasco (1998) 132: What’s this bloke’s name. The botty bandit. Jordan?
OnLine Dict. of Playground Sl. 🌐 botty-basher n. a homosexual.