Andrew really didn't say much after that, but he was the first stable hand to talk to him so Derrick continued to work alongside of his new friend for the morning, mucking stalls and refreshing the hay.
He briefly considered how strange things had become. Here he was, trapped in the form of a homey Ginger. Judging by Andrew who was his identical twin, they looked to be around 19 or so, with an exceptionally strong muscled build. With no clothes whatsoever, they were caked in horse filth but nothing seemed to bother them; their bodies were made for this.
Then there was their equipment, it was identical to an equine but he did not feel horney at all, only a sense of satisfaction as they cleaned the stalls. Derrick felt proud to have one, although Andrew's more bitter attitude worried him that everything he was feeling was influenced by the nature of this place.
It was around mid-day that some of the centaurs started to come into the barn and make their way to their respective stalls. Derrick was hungry, and looked at these majestic creatures as they passed by in awe and pride.
"Hungry?" asked Andrew, he seemed to have a slight smirk on his face.
"Hmm? Yeah, actually I am. How did you know?" replied Derrick.
"Because it's time for lunch and it's your first time." replied Andrew. "Just wait here until you are selected, you'll know what to do."
It wasn't long before Derrick found out. One of the centaurs returning from the field walked by Derrick and patted him on the head; Derrick gave an involuntary smile and started to follow the large creature into it's stall, where it turned itself around and waited.
Andrew was right, Derrick was hungry and knew exactly what he wanted. Approaching the centaur, he went underneath and immediately started to caress the mighty equine's shaft, coaxing it out of it's sheath. As pre-cum started to emerge from the slit, Derrick lapped it up with his tongue, the thick salty mixture was ambrosia to the stable hand, and was exactly what he desired.
Derrick worked the centaurs shaft like he had been experienced with it all his life, with his own penis coming to full length as he satisfied the centaur above him. Then, expertly, he knew it was time. As the centaurs balls begun to twitch, he put his mouth up to the slit and held on like his life depended on it.
He caught the initial wave with some difficulty, but his new form was without gag reflex and it washed down directly into his stomach with no resistance. The flow was amazing, with wave after wave of nourishment entering his mouth. Finally, when he thought he could swallow no more the flow of cum subsided; Derrick was both relieved yet disappointed.
Then, without asking Derrick then started licking the head and shaft. Even after receiving so much cum, he still found the taste incredible and knew everything must be cleaned. Finally finished, the centaur looked down at Derrick and waved him away, seemingly satisfied that the symbiotic relationship between centaur and stable hand was complete.
Leaving the stall, Derrick's gut was distended but full and satisfied. He noticed some other stable hands, also exiting the stalls but could not find Andrew, as they all looked alike. So, with their morning work completed and lunched received, he decided to follow the other stable hands into an apparent door at the back of the stables.