Princess Serena missed riding ponies and since she did not want to go in search of them, she chose to use a human one. She used her slave as a human pony especially since he had messed up. She had a reason to humiliate him and she did not worry about how he felt since he had messed up and she was having fun and punishing him at the same time.
Mistresses Meg, Britney and Teodora wanted to teach this loser a lesson. So they invited him for what he understood to be some fun. He had never been with three women at the same before so he felt great. But when he got there, he was humiliated by the mistresses and turned into a human pony. The mistress had to endure the pain and humiliation of carrying the three of them at the same time.
This mistress learned that not punishing a slave was setting him up to disappoint her so she humiliated him with advice and instructions from her friend. The two mistresses turned the slave into a human pony. He was humiliated and made to endure a lot of pain. He tried to plead for mercy but none of the mistresses paid attention to him. He was then trampled before they were done with him.
Goddess Liana wanted to test her new slave. There was a lot of things she wanted to teach him and she wanted to gauge what level he was at. Before she did that, she tested him using pony play training fetish. She told him what to do and she rode him as she wanted. She did not care how painful it was for him. All she cared for was that he was obedient and he followed her instructions.
Madame Madison did not like the food her slave had prepared. She wanted him to learn to cook better meals and as a result, she rode him like a pony. That was his punishment and his motivation to do better. She even whipped him when he did not do it the way she wanted or when he got tired. She also got him to lick the soles of her boots.
Lady Electra wanted to test her new slave. She wanted to know him well so that she would know what to do and how. She asked him to be her human pony and he agreed. She rode him on his back for hours and he was in a lot of pain but she did not let him go. He tried his best as she choked him. When he could not take it anymore, he collapsed. But she was impressed by how long he had endured.
Mistress Meg and her friend mistress Misty had a bet with this guy. He thought he was smart enough to outwit them but he did not. They won the bet and they chose to humiliate him as a way to redeem it. They rode him like a pony and enjoyed how he struggled to carry them. They did it for hours till he could not manage to support them however much they whipped him.
Mistress Amy wanted to ride this loser because she was bored. She did not pretend that he had messed up or there was any other reason why she was doing it. She chose to do it specifically because she felt like it and she was bored. So she put a saddle on him and she rode him as she wanted. She did not care how he felt and nearly broke his back doing it.
When this guy messed with this mistress, he did not expect the punishment to be as bad as it was. She turned the guy into a human pony and she degraded and humiliated him. She did it in public so that he would be humiliated even more and did not care what he felt. She had her fun and she punished him and let him go after that as she had what she wanted.
This guy thought he could lie to mistress Gaia and her friend and get away with it. They realized what he had done and they punished him painfully. They did not do what he expected them to do. They stripped him naked, whipped him and rode him like a human pony. The mistresses nearly broke his back as they rode him together at the same time. Not even his cries of pain were enough to get him off the hook.