Under the cover of darkness, the man's hand finds its way to his cock, the silky smoothness of the skin a stark contrast to the rough callouses on his palm. He strokes, his grip firm, his rhythm steady, his breath coming in short, sharp gasps. The room fills with the sound of his hand moving up and down his length, the wet slap of skin on skin. His balls tighten, his stomach clenches, and with a final, shuddering stroke, he comes, his cock pulsing, his cum dripping onto his fingers and onto the sheets below.