C, the curious solo explorer, delves into the world of urethral play. In the privacy of his room, he tentatively touches his urethral opening, his heart racing with anticipation. He lubricates a small toy, taking a deep breath before inserting it. His body responds, his cock hardening at the unfamiliar, intense pleasure. He moves the toy, exploring, his moans filling the room. His hand moves to his cock, stroking, the pleasure building. He pulls out the toy, his body aching for release. He jerks off, his mind filled with the taboo pleasure of his urethral exploration.