Mistress Joschi loves her pony slaves. She had a new one today and she could not wait to ride it. The mistress first of all made sure the human pony was naked before she did her thing. It was the sort of thing they pony slave had never had done to him before and not only was it new, but it was also brutal and he begged her to stop.
This pony slave did not know what was about to happen to him. He had pissed mistresses Joss, Meg and Daria and he was about to get the punishment of a lifetime. So they all rode his back and told him to endure it for as long as he could. They did not care how much pain he was in. He had brought it all upon himself and he had to blame himself for the punishment.