It's where this mom hires this nurse to jerk off her son cause she never seen him jerking off. So the nurse ties him to his bed and put a machine that pumps his Dick. Then the nurse reveals if he cums over the line in this cup he gets either penectomy or castrated I cant remember. Luckily he's just below the line. But the nurse doesn't cut off the machine and he drips a drop of cum and it fills it above the line so then he loses his manhood.