In a dimly lit room, a femdom commands her sub to strip and kneel. She circles him like a vulture, "Today, we test your resolve." She produces a ball-gag and he winces, but she smirks, "Oh, this is just the beginning." She pins his arms behind him, exposing his vulnerable sack. She takes a steel-toed boot and slowly, methodically, grinds her heel into his balls, watching with sadistic pleasure as he squirms and squeals. "Remember, boy," she purrs, "Your pain is my pleasure."