A glistening, bare cock throbs under the camera's gaze, lubed up and ready for the solo show. The owner, anonymous and unseen, has rigged up a DIY cock pump, a homemade machine designed to milk his stiffness to the brink. He strokes, teases, and pumps, his thick length gliding in and out of the slick contraption, pre-cum beading at the tip. The room fills with wet, slapping sounds as he fucks the machine, his breath hitching, his grip tightening. He edges, pauses, and starts again, the camera capturing every slippery, swollen inch.