It was said unthinkingly, practically unwillingly. I was so caught up in a haze of bliss beyond any I'd felt before that I spoke by instinct. "I wish I were your little mare. I wish I were your little mare forever." In an instant, I realized what I had said, in another what I had done, and in a third, all care was banished from my mind. I was being twisted and fixed in form, wishes restricted.
Laying across the bench in the cooldown tent I felt my body shrinking, my cock withering, receding as it pulled back into my body. It shrunk with me, and then faster than me and in a moment I was left with a large equine clitoris and no maleness to speak of. As I stood I was aware that Sara was taller than me, stronger than me. I had diminished down to less than five feet, a petite and slender body with a still drooling cunt.
It was done in moments and only Sara knew what had happened. "Joey!" Sie laughed, "Very cute. You don't have to tease me." I clip-clopped to hir side and pressed my muzzle to hir shoulder. "What joke, Sara?"
"You're not going to be my mare forever right? You're fooling with me?" Sie was concerned, and I knew why, though I didn't care. "I've changed! This is who I am, and who I want to be." I rubbed against hir hip, cupping hir heavy fertile balls, which promised to provide us with so many foals.
Sara blanched, "Okay, enough." Sie stepped back, "Wish yourself back."
I pouted, stomping a hoof, "But I want to be your mare!"
Sara thought fast, "If you want to be my mare, then make a wish to go back to how you were."
I grimaced. "Fine! I wish I was back the way I was."
For the first time a wish had failed and I knew why. I giggled, "Oops, I guess forever means forever!" I skipped to hir side, "Now can we stop playing and get back to business?" Business, in this case, was a hand on hir velvety sheath.
Sara was panicked and pushed me away again. I felt hurt, and almost wished something but she cute me off. "Try to wish you weren't so...submissive, please? I miss Joey."
"I'm still Joey, silly." I pouted but had an idea. I thought it through and then made a wish...