A lone man, his dick aching with desire, finds himself unable to resist the urge to masturbate. His thick, veiny cock throbs as he strokes it, feeling the pre-cum leak out. He groans, his body tensing as he brings himself closer to the edge. His mind races with filthy thoughts, pushing him to stroke faster, harder. His balls tighten, and with a final grunt, he comes, his cock pulsing as he covers his hand with his hot, sticky cum.