The young man, in the throes of puberty, can't resist the urge any longer. He locks his door, his heart pounding as he undresses, his cock already hard. He sits on his bed, his hand wrapping around his shaft, a groan escaping his lips. He strokes himself, his grip firm, his pace steady. His other hand cups his balls, rolling them gently. His breath comes in pants, his body tensing as he gets closer. He bites his lip to stifle his moans, his hand moving faster. Finally, he can't hold back any longer, his cum spurting out, coating his hand and stomach, leaving him gasping and spent.