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
Guy got his cock in the glory hole but girl bondaged it with thin wire instead of giving up a blowjob
Dude is having a fight with the bikini girl: loses the battle and she is about to bite off his balls with her teeth
Mistress is having her lover strapped to bed posts and tormenting his balls with clothespins and steel device