Guy got his cock in the glory hole but girl bondaged it with thin wire instead of giving up a blowjob
Dominatrix is wearing rubber gloves and dealing with slave's ball sack by using a set of medical clamps
Male is handcuffed and having a weight attached to his balls: whipped by girl in the sound-proof chamber
The worst femdom tortures you can imagine: hitting weak penis with mouse trap and then cutting off balls with castrating device