The stable boy scrambles around on his hand's and knee's trying to get away. But the rearing and stomping muletaur above him is to big and fast. Then he feels it, big, blunt, and rough thrusting against his buttock's. Reaching back he tries to push the big thick mule cock away from his tiny pink plucker. But it's to late rearing up Mike brings the full massive weight of his muletaur body down on the big blunt tip. To quickly for the stable boy to resist it is rammed inside of him. A loud scream of agonzing pain escapes the youth and his anal gates are torn open! with his huge mule tool buried in the stable boy, Mikes eye's half close with pleasure. Picturing a big round equine rump, Mike begins thrusting. The pleasure of the moment making him forget everything. Grimacing and chewing his lower lip in agony the stable boy desperately tries to pull himself off the massive mule tool. But even as he does so, he begins to notice that there is less and less room under Mike. Shocked the stable boy watches as his bare hands begin to dark melting togather forming into solid flinty gray lumps. His arm's begin growing out of the cuff's of his tunic, lenghtening as the same muddy brown fur begins to cover them as covers Mike the Muletaur.
"No!" "Oh gods Nooooooo!" He screams as he feels his body lenghtening and changing. Clothing rips and shreds as his body grows and expands. Soon he is lifting the rutting Mike into the air, as his mule body fully form's. He finds his human torso pushed up against Mikes. And humiliatingly he feeling his own huge black mule tool slide from it's sheath to begin slapping stiffly against his furry belly.....