Derricks mind was overwelmed with feelings for the centaur and for men at all. he never thought that this was feeling so good. he claimed up under the centaur and stand beside him.
"Wow. That was awesome. i never had done this before, but i like it." you said to the centaur. "you are talented and we should do it again. But for now, you better get to clean you up and eat something."
Derrick would like to say something but two of the horseboys take his shoulders and guide him to a barrel full of water. He clean up and sit down near the other horseboys. they start to sniff, it seems that they like it. And one of the horseboy open a bottel and put oil on your body. one by one the horseboys started to rub the oil in his body. Derrick feel relaxed and on the other hand you feel that your muscles get heavier. Than they start to rub the oil on his cock and balls and they started to darken and grow bigger. than he felt into sleep. Derrick was oblivious to the changes his body was undergoing.
At the morning one of the horseboy wake you up and service you some bread and water. than he stand up and look for the centaur.
he found him in the same stable as yesterday. The centaur eyed him closely and then smiled.
"Ah i see. my horseboys do a good job. How do you feel?" ask the centaur.
"What do you mean?" Derrick ask. But the centaur say nothing and only turn his horsebody to the side, so that Derrick could see the big stiff horsecock of the centaur.
without thinking Derrick go on his knees and try to claim up under the horsebody to suck the Centaur again. But the Centaur turn around and get behind the boy.
"Bend over and go on all four this time" he order to derrick. Derrick was confused but he do it and look the fist time on his lower body. And he saw that his human dick and balls are change into the big black genitals of a horse.
"whats happen to me" Derrick ask and try to stand up again, but at this time the centaur was step forward and cover the boy with his horsebody.
Derrick get in panic, as he feel the tip of the big horsecock of the centaur push against his anus.
"Don't be afraid. Today i will only preper you for the final act." and with this word he let run some seamen flow from his cock into the anus of the boy. Derrick was so in lust, that he feel his own horse cock was getting hard and push out of his sheath. At the same time he feel is anus get soft, so that the tip of the horsecock will get deeper. After 20 Seconds the centaur stop and go back.
Derrick climax his load into the hay and than he try to stand up.
"What have you done to me" Derrick ask the centaur. "Nothing. That was only the stableboys that think that you would look better with more muscle and horse genitals. And they are right" the centaur smiles.
"I will offer you a job" stay here another day with me and the stable boys and i will give you so much gold coins that it be 2 Million Dollar in your world."
"What? Your stable boys make me a freak and you try to fuck me. And you offer me 2 Mio. Dollar for this. You are mad" Derrick say. But than he think again.
"I only have to stay here for another day? You don't try to fuck me again, and you will change me back to my former self?"
"If you wish that, i will do it" the centaur said.
Derrick thought about it again and i look around, look at his new body and than he said.
"Okay, one other day and you don't try to fuck me."
The centaur smiled. "But today you have to help my stable boys to clean the stables here"
with this word two stable boys grabed Derrick by the shoulder and bring him to a barrel of water to let him clean. As he do it. one stable boy start to rub oil on his butt and anus, and Derricks horse cock push out again of his sheath. It feels good and he don't recognize that his butt open a little bit and a his new horse anus will be visible.
Than the stable boy guided him to the other boxes and show him how to clean them. he had finish one box as he go to the next he wish he would something to drive away the flies. they always fly about his ass and also landed on this black anus. After the third box he clean he haven't this problem. the flies are not longer to near to his butt or anus.
he was tired and so he lay down in the fourth box between the horse manure and a minute later he sleep very deep.