In his dimly lit room, a solo gay man lubes up his ass and inserts a large dildo from his sex machine. He turns it on, and the machine's relentless rhythm drives the dildo deep into his prostate, making him gasp and groan. He strokes his hard cock, his body buzzing with pleasure. The machine's speed increases, pushing him closer to orgasm. His body tenses, and with a final cry, he cums, his ass filled with the dildo as his cum drips onto the floor.