Dude is having a fight with the bikini girl: loses the battle and she is about to bite off his balls with her teeth
Hot dominatrix is having her slave handcuffed and using weird tool to pu tight rubber bands over his balls
It is impossible for the frog-tied slave to runaway from the whipping mistress punishing him violently
Test subject is feeling pain when cruel brunette is sing steel tous and electricity on his exposed penis