Stacy:
The stablehand patted me on the shoulder. "Your lucky night, big boy. The Madame wants you to do an encore." Excited, I headed back to the stage. Madame leaned over and gave my testicles a gentle squeeze, and whispered in my ear "take your time this time--give them a little show before getting to the main event." Then she turned her attention to the quavering, helpless human perched on all fours on the stage. Soon I caught the scent of a ready jenny again, with subtle, delicious differences. I surged with sexual energy, but remembered the Madame's words.
Rather than leap on top of the man slowly transforming into a jenny--I could see first faint dusting of brown fur emerging--I nipped the pants she wouldn't be needing any more off. There was still a ridiculous pair of underpants separating me from my goal. I licked them and felt the delicious female genitalia underneath. I ripped the underpants off with my teeth and despite their delicious smell gave my neck a toss and threw them into the audience, which went nuts. The jenny's vagina stood there, moist and tempting, but I knew what the Madame wanted. I bent down and gave the remaining male genitals on the human a lick, and felt them dissolve and disappear under my tongue. I then licked and nuzzled her legs, which transformed from awkward human legs to the kind of sturdy donkey legs that could bear my weight. Her brays were getting louder and louder, with a definite note of impatience.
It was time. Once again I climbed onto the back of a jenny and thrust into her body. But I could tell this time was different. Whereas the first jenny had only endured, this one was an eager participant, relaxing and tightening herself around me and meeting my thrusts with thrusts of her own. And her metamorphosis completed, with donkey ears bursting from her head and her jaw extending into a muzzle. Her braying was growing only louder, with a sound of ecstasy. My climax was even better than my first, but as I dismounted I felt physically exhausted, ready to curl up and sleep on the grass.
Alex:
It was the greatest, not sexual experience, but experience period of my life. I was a female animal, mounted, fucked and, as I somehow knew, impregnated. This was my purpose, and always had been. I didn't miss a damn thing about being a human male. The crowd was jeering, but I felt only contempt for them as cowards, afraid to face who they really were, whatever that may be. I turned to face away from them, and emptied my bowels. I heard Madame's laughter. Then Stacy and I exchanged friendly nuzzles as we were led into our new lives.