"I'll be glad to show him around!" The teen grinned and came over with a hand extended. "I'm Caleb. The twins are my little brothers Joshua and Nicholas." Mike shook hands, surprised at how much larger his own coal-black hand was.
The two younger boys, identical down to the mop of reddish-brown hair and bright blue eyes, grinned and patted Mike's side and neck. "Wow! You are really big!" One of them reached back to heft the centaur's impressive ballsack. "Bet you can service a half-dozen mares a day!"
Caleb gestured towards the pastures and started walking. "Come on. I show you some of the herd."
Mike chuckled and followed, the twins staying with him. Liam stayed with the older man, obviously the father and owner of the farm. Caleb opened the gate to one of the rolling pastures, and several huge horses came trotting over for attention. They snuffled curiously at Mike, but were much more attentive to the boys. They snuffled and lipped and rubbed against the twins and Caleb with obvious affection. Mike was afraid they might get jealous when the twins resumed patting and rubbing him, but the animals did not appear to mind. Mike sure didn't - the one boy with his hand pushed into Mike's sheath was massaging the heavy cock inside.
"Christopher and Frederick are both geldings," explained Caleb. "A great work team."
Mike nodded. Geldings - that explained why he felt nothing towards them - they were castrated males.
Caleb grinned. "Come on to the next pasture. There are a couple of mares you will enjoy meeting."
They passed through another gate and found a half-dozen huge Shire mares and filly's who all come over to investigate the boys and Mike. Two were a bit stand-off to Mike, but the other four were very interested. Thanks to the twin's attentions, Mike was already partially erect when he entered their enclosure, and the mare's scents brought him to full attention.
The twins resumed rubbing his shaft and testicles, cheerfully discussing how potent they thought Mike would be. Caleb introduced the mares as Princess, Molly, Nightmare, Frolic, Amy, and Midnight. The first four were close and in various stages of heat, while the other two remained distant. Nightmare looked to be older, but also experienced with stallions. Her cunt lips winked and looked slick and inviting. Caleb slipped a hand into her opening and started to massage her with his fingers. "So, want a free sample? She obviously wants you."