The man's large, veiny cock throbs in his hand as he works it expertly, pre-cum beading at the tip. His other hand grips the coffee mug, fingers white-knuckled as he fights to maintain control. The room fills with the wet, slapping sounds of his hand on his cock, punctuated by his ragged breaths. His hips lift off the chair, fucking his fist as he nears the edge. With a guttural groan, he comes, thick, hot streams of cum erupting from his cock, painting his body in his own sticky, white art.