Green’s Dictionary of Slang

ass-fucker n.

also arse fucker
[assfuck v.]

(US) one who has anal sex; the implication is usu. a male homosexual.

[US]Maledicta III:2 231: Ass-fucker is vivid but, as we said, won’t do, but ass-bandit has a limited circulation.
[US]R.O. Scott Gay Sl. Dict. [Internet].
Capital Q Weekly (Sydney) 29 Mar. 33/1: Seeks one or more horny, well hung arse fuckers.
[US]J. Stahl Plainclothes Naked (2002) 149: Get it, ass-fucker. I’m busy here.