Josh was still holding the book in his hands, and realized that, after having stolen Marco's height and his cock, the only thing that was left to steal were his muscles. He quickly paged through the book and found the spell. Then he read it out loud, and waited for the results.
Immediately, Marco felt his big muscles melt away from his incredibly short body. He was already short and he had Josh's cock, so he decided to just remain calm and let Josh take his muscles from him as well. He looked rediculous being short and muscular, so he may as well give them to Josh, who was tall.
Josh immediately fely his muscles expand on his tall body, while Marco's muscles began to deflate like balloons which had the air let out of them. Soon, Marco looked like a skinny little kid with a big, adult head, while Josh now looked like a big adult body with the head of a young boy.
"Awesome! Look at my big muscles!" Josh cheered, as he made a fist and flexed his arm, causing a mighty bicep to form on his arm.
Meanwhile, Marco looked down and saw how skinny and frail he had become... almost like the way Josh used to be! Now, Josh, who was still 12 years old, was 6 foot 3 inches tall, he had an adult cock, and weighed over 210 pounds with all his muscles. He was a big kid!
Marco was a 5-foot-tall 25-year-old man who was skinny as a rail and who weighed only 112 pounds, along with a 3-inch cock. He was an adult in a kid-sized body.
"Can I keep your height, your dick, and your muscles for awhile?" Josh asked him.
"What?" Marco asked him in disgust. "For how long?"
"Until tomorrow?" the tall teen asked politely.
"Alright! But, tomorrow you'd better give me back everything!" Marco sneered at the bigger 12-year-old. It seemed really weird, talking to a kid who had the body of an adult, while Marco was 15 inches shorter than him. Josh literally towered over him and he fully enjoyed it.
Josh took the book and hid it on the top shelf of the bookshelf, out of Marco's reach, as the big boy went outside to play basketball. He decided to go out and enjoy his big body aslong as he could...
Meanwhile, Marco was looking all over the house for the book...