Ty was now having fun experimenting on Dustin like this, and decided to try something a little crazier. “You like bragging about having such a horse’s dick, brother, let’s see how you actually like being the whole animal.”
Dustin gasped as he felt a strange warming sensation flow over his young body. Ty had willed him into a horse. “Oh God, no! No, Ty! Don’t do this to me! Please!”
Mercilessly Ty stood back and watched with a playful grin as the younger boy got to his feet and looked himself over just in time to see his body starting to change. Almost immediately the nine year old Dustin’s body fat began to burn away, lessening and lessening until he was a slim but still undefined little boy. That began to change quite quickly, as Dustin watched in astonishment as he started to beef up again. He wasn’t growing any taller or any older, but instead his young body was rapidly pumping up with muscle in slow spurts that made it sound like he was stretching rubber.
Giggling at Dustin’s surprised expression Ty walked forward and placed his hand on Dustin’s chest, which was slowly pumping up into a strong set of squared pecs. “There, see?” Ty said, “this isn’t so bad, Dustin. A horse is really strong and fast. You’ll love being one.” Dustin simply looked up at Ty with his mouth hanging open and eyes wide, the sensation of his inflating musculature making him feel pretty good as he got strong again, and then looked back down at himself.
He was only nine years old, but Dustin now had the body of a highly defined weightlifter. His chest and abs had grown tight and strong, and his limbs had inflated too! In particular, Dustin’s thighs were bulging and thickly muscled. “Er…” Dustin groaned in confusion. He had expected himself to be a mindless animal already. He was quite happy with himself, although he was still small and his penis was infantile, he was as strong as – maybe stronger – than his adult size. He already had a head start on his development! His joy, however, was short-lived, as chocolate brown hair began to sprout on his chest and groin.
“Oh no!” Dustin cried, “Ty, stop! I like myself like this! Please!”
Ty shook his head no. “Sorry, bro, I promised you a horse cock and that’s what you’ll get. It just happens that the rest of you has to be a horse too.” Dustin looked slightly taken aback at this, but Ty grinned and rubbed his hand through the thick brown hair spreading over Dustin’s young chest. “Think of how big you’ll be then!”