Jake coughed and spluttered. The potion tasted horrible! And... And it burned his insides! He thought he was going to throw up! He clutched his stomach, groaning in pain. The burning sensation then spread to his legs. To his whole body, in fact, even if it was particularly intense on his legs. Jake gasped and started to openly howl in pain. Nothing surprising, considering how many changes his body was going through. Appalled, the poor youth saw his body transform before his very eyes, helpless to stop it. He saw (and mostly endured) his legs bend and snap into new shapes, his ankle bones elongated and his toenails fused into a single hoof. He would not need his socks and shoes a more. They covered themselves in a light brown fur and to his dismay, it spread to his waistline, his backbone screaming in agony as a little moving tuft tail appeared, wagging joyously at its newfound existence. Jake to his horror saw his arms getting hairier, a hairiness that he could feel spread over his face. He scratched at the new tufts of body hair, all prickly and itchy. He could sense two massive headaches upon his forehead, which his fingers informed him by touch that they were horns sprouting. Also to his horror, Jake saw his belly getting paunchier and developed its own fuzz. A goat! He was changing into a goat! No! It wasn't possible! Not that! He didn't want that! Then his groin got incredibly uncomfortable. Frightened, he peered at his crotch and was met with the only good surprise of his transformation. His penis became enormous and his scrotum two sacks bursting with semen to make. Sure, he was even hairier down thee, but there was nothing to be ashamed otherwise! On the contrary! He smiled and stared stupidly at his crotch. Then, he noticed that the pain was receding. He had lost himself in the contemplation of his virility. And he was not a goat! He still had human arms! A whole upper body in fact! He only then understood that he was a satyr. And like a belch, he bleated a little. He took a few tentative steps too. The witch was admiring her work. Yes, the boy made a fine satyr. And as a male, he'd adjust easily to his new life, even if it might be a bit difficult at first.