It is impossible for the frog-tied slave to runaway from the whipping mistress punishing him violently
The worst femdom tortures you can imagine: hitting weak penis with mouse trap and then cutting off balls with castrating device
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
Cruel woman gives slave a painful punishment by whipping his ass and putting a couple of lashes across his balls