In the soft glow of his dimly lit room, a man, uninhibited, explores the boundaries of his own pleasure. He meticulously cleans his rigid cock, preparing it for the intimate invasion of a urethral plug. The plug, smooth and sleek, is lubricated generously, ensuring a seamless journey into his sensitive urethra. With a deep breath, he guides the tip in, gasping at the intense sensation. His body responds, cock throbbing as the plug sinks deeper, filling him completely.