By 3PM, John was starting to feel as if his whole skin was creeping. He wanted to get back to the doctor, but he also had a hard on that wouldn't receed. There was no way that he could hide that monstrous erection! His hair got thicker and was falling down into his eyes. It had changer color to almost black. He ripped his shirt off and grabbed at his back. The hair that had started at his neck, now made it all the way to his lower back. He ripped off the rest of his clothes, having difficulty as his fingers got really stiff.
His fingernails grew black as fingers elongated. He screamed and ran for the door. He couldn't open the door with hands that were begining to look ever more like hooves. His huge cock was getting very sensitive and as he plodded back across the room, it started to spasm! Huge gobs of cum shot forth and his senses reeled! With every shot, there was a surge from his body. His feet elongated and he fell onto his front hands/hooves. His face surged outward bit by bit and his eyes spread further apart. Incredible scents assaulted him as new senses burst forth. He was so caught up in the neverending orgasm, that he barely noticed.
He screamed as pleasure mixed with pain. His spine curved and grew longer. His hips shifted and for the first time was quadraped. Another sharp pain in his butt was barely noticed as a tail grew in.
His size was ever increasing until he was fully the size of a donkey. He tried to speak then and only got out," HEEEEEEEHAWWWWWWWWWW!"
The spasms stopped and he was able to think again. He turned his rather long neck to look back at his body. He saw only donkey then.
His donkey cock shrank back into its new sheath and he took his first step as a quardaped. He stumbled and almost fell. It was much harder on four legs. The curtains fluttered as a breeze flowed through. He drew in a deep breath. His dick dropped again. John the human may not have known what he scented, but John the donkey did! The donkey took instant controll and backed to the door, kicking until the door splintered outward. he bolted out of the door, down the steps and...........