In a dimly lit dungeon, a muscular, hairy-chested man straddles the sex machine, his engorged cock throbbing with anticipation. The machine's anal attachment, glistening with lube, inches towards his eager hole. He grips the handles tightly as the machine's piston-like motion begins, slowly at first, then building to a relentless, anal-pounding pace. His moans fill the room, echoing off the cold stone walls as he takes every inch, his body jolting with each thrust.