Lady Scarlet knew that her friends wanted to learn about pony play and she had to teach them how to do it and how to be the best at it. She had to show them practically and she did so. The naughty and adventurous mistresses loved it and they enjoyed doing it but the same could not be said of the guys who had to endure all that was done to them.
Princess Violetta and mistress Joschi found this guy repulsive but he thought he was God's gift to them. They hated his guts and wanted to tame his balls. So they invited him to their house where they turned him into a human pony and rode him naked all over the house. They did it while naked too so he was double dominated as he was turned on but could not get some and was physically dominated by having to carry them around.