Mistress commands her submissive to endure an intense sounding session, pushing the boundaries of pain and pleasure. The room resonates with his cries as she forces a thick, curved sound deep into his urethra, stretching it beyond its limits. His body trembles, sweat pouring down his face, as he struggles to hold back screams of agony. The mistress, relentless, continues to probe and twist, watching with satisfaction as her submissive collapses from the extreme, painful pleasure.