A submissive male kneels before his stern mistress, eyes cast down as she begins her torturous game. She commands him to stroke his cock until rock hard, then traps his swollen manhood between two hard, unforgiving books. As he groans in discomfort, she grinds the books together, rolling his sensitive flesh between them. His balls swell and redden under her relentless pressure, his cries of pain music to her ears. She pauses only to slap his face, call him names, and make him thank her for his punishment before resuming her ball busting, pushing him to the brink of endurance.