It is impossible for the frog-tied slave to runaway from the whipping mistress punishing him violently
Male is handcuffed and having a weight attached to his balls: whipped by girl in the sound-proof chamber
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
Exposed penis got loads of steel clamps attached and there is crazy dominatrix biting the balls sack