The doctor's gloved fingers probe the patient's asshole, feeling its tight, velvety walls pulse around them. The patient moans, pushing back, wanting more. The doctor, now fully hard, replaces his fingers with his throbbing cock, slowly pushing into the tight hole. The patient gasps, feeling every inch of the doctor's thick, veiny shaft. The room echoes with their grunts and the sound of flesh slapping against flesh as the doctor fucks the patient's asshole, harder and faster, chasing their mutual release. The patient, now on his back, strokes his own cock as the doctor pounds into him, until they both explode in a mess of cum and sweat, their taboo encounter leaving them breathless and spent.