Mike stared at the huge mare and grinned. "I want to mount her as a Shire stallion. A real animal. Just for a ilttle while, though. Can you do that?"
Liam grinned even wider. "That's easy! Go on in with her while I get some things together." He held the gate open until Mike trotted in with the very interested and interesting female, then latched it and ran to the other end of the stable.
The big mare whickerd at him and lifted her tail in obvious invitation, still 'winking' at him. Although Mike was curious, he didn't really feel strong desire to mount her. Why didn't his centaur parts respond? Or becasue a centaur wasn't really a horse. He knew it was silly, maybe even dangerous to play this transforamtion game, but he was determined to make the most of this game experience.
Liam returned with a couple of clay jars and some brushes. "Don't worry - you'll be perfect for her in just a few minutes." Pulling on some leather gloves, the boy scooped a handful of brownish paste from one of the jars and stepped beside Mike's hindparts.
Mike gasped as cool creme was suddenly pushed into his sheath, and then slathered around the emerging shaft. It felt really good, getting him aroused very quickly. And as he became erect, the mare's scent started to affect him. Where he ahd looked at her with curiosity before, Mike could feel a burning desire build in his loins, a lust that spread out and up to his mind. It was intense and pure, something he had never experienced before.
"Hold off for a moment, centaur!" Liam shouted at him and grabbed another jar. Scooping up thick black paste this time, the boy moved to stand in front of Mike. "Keep your eyes and mouth open. it won;t hurt." Then he reached up and spread the goo quickly over Mike's entire face, covering eyes, nose, mouth, and then wiping it back all over his head.
Mike blinked as the stuff coated his eyes - it felt warm and strange, but did not burn or hurt. But he couldn't see clearly now. The warmth was all over his face, sinking deep into skin, his skull. The mare's scent started to get stronger, and he realized his nostrils were getting alrger. Reaching up, he felt his face push outward, forming a horse's muzzle. Blinking finally cleared the goo from his eyes, but vision was now muted and distorted - probably because he now had horse's eyes. His hands were hot now, from where he had gotten paste on them feeling his face, and as he watched, they melted away to leave shrinking stumps.
Liam stood back, and gestured towards Conner. "Go ahead and mount her now. You'll be a Shire stallion before you finish, I promise!"
Mike needed no further urging - the mare was desperate for him, and he was now desperate for her. He lunged forward, but missed her opening the first time. And the second. Finally, Liam stepped forward and expertly grabbed his swollen member to guide it
into the filly.
Fire exploded in Mike's human upper body, yet the sensation only added to the incredible pleasure and need. His vanatage point shifted downward as he thrust, his human chest and neck fusing and shrinking into a horse's neck, his head becoming heavy and massive. He could feel his body expand, gaining muscle and mass as it swelled into a Shire stallion's.
The heat faded quickly, though, and as Mike felt the pressure in his huge, swinging testicles build for release, he knew that he was fully changed. Then he threw back his head and neighed in equine orgasm as instincts and lust were satisified in an explosion of pure animal release.