James stood, naked, in front of Elspeth the witch. He could feel his body tingling! Oh god, was this real? Was he actually going to devolve now? The witch could see the fear and anxiety in James' eyes and she just laughed.
He glanced down at his knuckles and saw thick dark brown hairs growing out of his knuckles and on the backs of his hands! Oh god, it was starting! He rubbed the thick fur on his arms as he noticed his feet cramping up. He looked down and saw them getting bigger and thicker, hairs sprouting in the tops of them, too! The hairs began racing up his legs. He could see veins forming on his arms beneath the hair, too. His arms began lengthening and getting longer! Hanging down halfway to the floor!
He grunted as he felt a warm tingling on his cock as his foreskin grew in. A grunt? Did he just grunt? He looked down at the skin that now covered the head of his cock with shock. Not only that, his cock seemed much bigger, hairier, and vernier than before. Likewise his balls were bigger and covered in a nest of hair, hanging low between his legs. He reached down and cupped his balls. They were so hairy now, and we're much bigger. They were heavy and hung low in their fat hairy sac. He felt his cock getting hard.
As he looked down he saw he was closer to the ground than before. Was he getting shorter?! He saw his legs, now covered in brown hair, were shorter and his back was hunched over now. His knuckles nearly were dragging on the ground. He turned to Elspeth and tried to speak, to plead with her to stop the spell. All that came out of his mouth were garbled, deep grunts. He couldn't speak English anymore! Elspeth just laughed, and said "It's okay, just let the spell do it's job. It's almost done!".
Hair raced up from the nest of pubic hair and quickly covered his whole torso in a rug of hair. It even grew on his shoulders and his back. His armpits erupted with hair and a strong musky stink began to waft off of him. He really was turning into a hairy stinky caveman!
The changes were almost done. James couldn't see it, but he could feel his face changing. A huge bony ridge pushing itself out above his eyes and his mouth flattening, turning more simian. Sandpaper thick stubble grew all over his face and he grew a very thick unibrow.
Finally the changes were done, James grunted in surprise and fear as he looked over his new hairy body. He was so muscular and hairy, but so much shorter than before! His cock was rock hard as well, sticking out of a massive bush of brown hair. He was so incredibly hairy! This was crazy! He wanted to see himself in a mirror. Elspeth just laughed and laughed at James' fear and confusion. James was at least grateful he wasn't dumb like a neanderthal now, at least she had let him keep his intelligence. But what if he was trapped like this forever! He couldn't speak, only grunt! He hoped he wasn't stuck in this hairy, stinky, neanderthal body.