Lost in his thoughts, he retreats to his sanctuary, the door locked, the world blocked out. His hands roam over his body, pinching his nipples, teasing his balls, before finally grasping his rigid cock. He pumps furiously, his mind a whirlwind of illicit images, his body aching for release. The room echoes with his grunts, his body convulsing as he spills his load, his secret safe with the four walls that surround him.