The sensation of having that huge cock thrust into of his little mare sex. Was very pleasant indeed, Mike bucked his big equine rump back into the stallion's thrust's. Twisting around Mike watched in growing amazement as his coat turned glossy black, and muscles began to build. Somewhere within the back of his mind he knew something was terribly wrong with this...on so many levels. "I'm a guy!" He grunted, even as the stallion continued it's impassioned humping. Mike's equine legs lengthened and grew thicker, and long white feathering spread down to cover his now massive hooves.
When his entire equine half was done, Mike felt incredible - more massive and powerful, strong and full of energy. He tensed those powerful muscles leaning back into the stallion's pumping hip's. The former human did not noticed that the blend of horse hide and human skin just below his waist was starting to creep upwards. So taken by the passions and pleasure of a mare with her stallion. At first, the only difference was his skin changing to black-furred hide. But then his whole human torso began to sink into the horse body, slowly forming a thickly powerful equine neck. His hair grew steadily down his neck and back, forming a long white mane. Even as his arms got pulled into his side's cording and forming the massive muscle that held up the huge equine head...
The massive stallion lifted his head high whinning loudly proclaiming his power and dominance over his mare!
In the loft Ty shook his head. "What a slut!"