Straining not to lose Mitchell, Jacob pushed his way into the stall that held Mr. Perth, and positioned his straining shaft. The former human lifted her tail and leaned forward, exposing her black, slick opening to him. Liquid dribbled from the center of his flare, becoming short spurts as the presence of the female forced the release of Mitchell. A huge gush splattered against the filly's backside before Jacob could thrust in, and he moaned in pleasure as his testicles pumped the remains of Mitchell deep into the filley.
He lay panting over her back when he was spent, and pulled out with a slow sucking sound. Her lips clamped shut, sealing in his seed. Jacob stepped back, eying the pool of semen on the ground. Gallons of equine sperm had missed the mare's opening. How much of Mitchell had made it?
The filley's belly was already distended, looking like a mare several months pregnant. The sperm inside her must have formed into a foal instead of simply fertilizing an egg. Saisfied that the boy would be OK, Jacob got dressed and went out to find Kelly. He had a lot to explain.
What he didn't see was another teenager hiding in the shadows. Billy had been riding with Mitchell and Kelly, but had stayed in the car when they went to the barn. But when he saw Kelly run away, he had gone to the barn looking for his friend Mitchell. And seen the impossible.
Waiting for the man he thought was Mr. Perth to leave, Billy went to the stall where he had seen Mr. Perth mount the filley. He stared at the thick white pool behind the mare. Was that all that was left of Mitchell?