In the privacy of his room, a curious young man explores his body's responses, focusing on the sensitive curve of his buttocks. He tentatively touches, then rubs, his ass, feeling a surge of pleasure. His cock hardens, and he strokes it, fantasizing about a lover's touch. The sensation builds, and he increases his pace, his breath coming in short gasps. With a final, firm stroke, he feels his mushroom head expand, and hot cum shoots out, coating his hand and dripping down his ass.