Wiktionary
assless
a. 1 without an ass 2 (context vulgar English) devoid of sexual intercourse 3 (context of trousers or chaps English) uncovered at the rear
Usage examples of "assless".
He's halfway to the door, moving with maddening slow care like always, as if walking on ice, twisted and seeming to limp off both legs and heartbreakingly assless in the baggy seat-shiny wide-waled old man's corduroys he always wears, the back of his red neck complexly creased as he moves off away, lifting one hand in a gesture of acknowledgment and dismissal of the M.
And he sorely missed the semen he had so recently expended on the assless demon.