A beautiful story. As a submissive masochist, I would love it if in real life, men could become temporary or permanent human ponies. I'd love to be in a spiked chastity, vocal cords sliced like in the story, legally a beast, for my vanilla best friend. Using a pony cart would be convenient for her, esp. as a bicycle rickshaw for longer distance. It would be a positive dream to serve her like that. When will the Supreme Court allow true freedom of contract? Thankx for writing the story.