Alex, a curious soul, embarks on a solo adventure into the taboo world of urethral play. Armed with a rigid stainless steel sound, he applies a generous amount of Endosgel, coating the toy and his penis for a smooth, slippery experience. With a deep breath, he guides the tip into his urethra, his body tensing at the unfamiliar yet thrilling sensation. Slowly, he pushes the sound deeper, feeling it massage his prostate, drawing out groans of pleasure. Alex experiments with different angles, each thrust bringing him closer to understanding the allure of this intimate, intense pleasure.