Dominatrix is wearing rubber gloves and dealing with slave's ball sack by using a set of medical clamps
Naked male is strapped along the table: can only watch the redhead hitting his ball with her hands and feet
Mistress is using balls destruction as a way to stop that man from jerking off: spread-eagle bondage, balls beating and trampling are doing the job fine
Slim dominatrix is playing with slave's balls: putting them in extreme rope bondage and attaching massive weights