Mistress Gaia – Pulling A Cart By The Ball sack

It is pony training day for my private slave, but different from the usual: today he has to learn pulling a cart. But also the way he will be pulling is different from the usual: he will pull my mighty wheeled cell by his ballsack!!! Everything his ready, his nuts are stiffly fastened, with a strap, to the cell and we are set to go. I sit on the box and order him to embark. He attempts desperately to move but, with my weight on top, the cart is really heavy. His balls are stretched to the limits but the carts moves only a few inches. I understand that he is dangerously close to castration, therefore I step down. Finally, with an incredible effort, he can pull the cart around the dungeon. His balls turn to red, then to violet, then to black; they are completely cut off from the rest of the body. Probably they are irreparably damaged but it?s not a big deal since my personal slave is impotent and kept in absolute chastity. I know, I?m often cruel with my slaves, but they know they have to suffer to be granted the privilege to serve Mistress Gaia!!!