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 girl spread fat man sideways with cuffs and tormenting his exposed penis in any way she likes: beating up, tickling and clamping
Femdom mistress is making petboy suffer by forcing him to crawl while his balls are clamped and then by subjecting him to whipping handcuffed