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
Mistress is having her lover strapped to bed posts and tormenting his balls with clothespins and steel device
Clamping electric wires to the exposed penis is painful itself but the main event is going to begin when high current is going to be switched on
Slim dominatrix is playing with slave's balls: putting them in extreme rope bondage and attaching massive weights