These mistresses had beef with this slave and they had to torture him so that they would keep him from doing the things that they did not want him to do. He had been warned but he did not listen. So the mistresses had no choice but to use pony play training on him. In addition to him being a human pony, he was also slapped by the mistresses painfully.
Goddess Gabriella and mistress Cleo and lady Scarlet had missed riding the backs of their human ponies. They loved doing it but since they were busy, they had not done it in a while. That is why they had to do it today as they had the time to do it. The mistresses went hard on the human ponies and they cried as they could not carry them for as long as the mistresses wanted to be carried.
When this slave pissed off goddess Barbie, he did not know what he had done to himself. The goddess was so pissed at him that she felt that the best thing to do to him was to trample and humiliate him like never before and that is exactly what she did to him. She used him as her brand new human pony and the pain and humiliation he felt made him pay her to stop the punishment.