"I wish Aunt Cathy was a female anthro unicorn as well." I said, and smiled slightly. Although this was partially an experiment for my own benefit, I figured Sara'd enjoy seeing her mom like that as well.
I leaned against the wall and grinned to myself as Cathy fumbled for another dish, then dropped it, tottering backward as her spine started to straighten, forcing her upright awkwardly until her legs became more human, still hoofed at the end, but now better able to hold her as her hips belled out and her barrel shortened and shrunk, tits appearing on her chest as her mane turned into hair and her muzzle humanized slightly, a long pearly horn pushing out from her forehead. "What the fuck!" She yelled, and I grinned again as her forehooves turned into hands that she stared at with open fascination. The changes ended as abruptly as they began and Aunt Cathy stared at herself in astonishment. "I'm...more human!" She reached up and touched the horn and frowned and murmured, "Sara..." and turned around.
As soon as she saw me she stopped and crossed her arms beneath her new breasts. They weren't as ample as I would have liked but the way the velvety coat covered their small gentle slopes was very arousing. "What the hell is going on here James?" I blinked then said, "Wait, what do you mean?"
"I mean, did you see what just happened? I just turned into...a...unicorn person!" I blinked and nodded then, just at the edge of hearing I heard a loud moan and the thunk of a bed hitting a wall. I blushed slightly and said, "Well...yeah." The moans and thunks were getting louder, but Aunt Cathy hadn't heard yet. I'd better keep it that way.
"I mean, you were a horse who gave birth to a human. Weird stuff is bound to happen." I said, speaking louder, "Not that theirs anything wrong with that, but I mean, you kind of have to expect this sort of thing." I was rambling and stumbling. "It was probably some toy Sara..."
Suddenly, from above us a shout of, "Oh FUCK YES!" rang out and Cathy gasped and bulled past me, pushing me aside, "My baby!" She cried, and I remembered just how overprotective of her daughter Cathy was. This should be interesting.