"Maybe you should!" His father shouted at him. "If you are going to run around naked and stink like that, you belong with the goats!"
"Fine!" Derrick stormed out while his Dad sputtered and his Mom called out to him not to leave. He did not turn around. instead, he stormed out of the resort, getting some curious looks from guests. Nobody seemed shocked or horrified by his nudity or lack of hygiene. Just his own parents! Well, he'd show them!
When he finally reached the clearing, the fauns welcomed him back with hugs and petting. The warm reception helped him calm down, and he sat down in a clump of amorous goat-boys. The redhead was staying close, and Derrick pulled him into a hug and grinned. "So, what do I have to do to become your twin brother? I don't want to look like me anymore."
The ginger faun grinned. "That's easy! If you don't want to look like you do now ever again, we can make you look like me as a human, and then make you a faun. And if you ever go back to being human, you'll still look like me!"
Still mad at his family, Derrick nodded. "Yeah! I want to change all the way, and never look the same again."
The faun threw his arms around Derrick's neck and kissed him, then pushed the teen's head down with surprising strength. Derrick found himself staring at the faun's impressive goat cock and balls - the animal penis was pushing out of its sheath. He got the idea quickly and starts to lick and suck at the organ, which was soon being thrust into his mouth. He was aware of laughter and comments from the other fauns, but everything was distorted and blurry, sounds muffled, sensations confusing. A burst of thick semen filled his mouth and he swallowed it all. A second and third ejaculation almost choked him as the goat cock seemed to swell in size. Finally, the ginger faun pulled out and almost immediately started pissing on Derrick. The faun's urine was rubbed into his hair, his skin. Derrick opened his mouth to capture some and swished the hot liquid in his mouth before swallowing it. It burned oddly, then the sensation faded.
Derrick came aware of the ginger faun still hugging him, but now the goat-boy seemed huge! He did not look any different - it was Derrick who had changed. He was helped up and guided over to the pool, stumbling on human, but much shorter, legs. He gasped when he saw himself. The reflection showed an exact duplicate of the boy minus goat parts. He was about ten years old, copper-haired and green eyed, slender and wild-looking. His pre-pubescent sexual parts were still big in comparison. The ginger faun hugged him from behind. "This is you from now on. Your human self. Do you want to stop here and see what happens? Or finish up all the way as my identical twin?"