Aaron knew what he wanted to do.
At 5'4", Aaron was small for his age. He wanted a change, and a new body, much like Matthew did.
Matthew was a year younger, at 14 years old, but he towered over Aaron at 6'2". He weighed a buff 240 pounds, and if rumors were to be believed, had quite the sausage down there. Some girls had said a foot long. He also had a sultry deep voice, and was, contrary to the jock stereotype, kind to everyone. Aaron envied him very much. Fortunately, this... thing... could change that.
Aaron set the transformation to take place over two minutes, and the transformation was also set to occur from bottom to top, meaning Aaron's feet would be first. He set it to be an exact copy of Matthew's body. Then he pressed go.
First, Aaron's feet started to grow. They went past their normal Size 8, and kept growing up to Size 12. They looked humorous on his frame, but that didn't last long either.
Aaron's legs now started to thicken and lengthen. In total. they grew about 5 inches longer, with a lot of added thickness. Finally, more hair grew in on the legs to match Matthew's body.
Aaron's cock twitched, hardened, and hardened more, past his normal 6 inches. It kept going until it reached 11 inches hard. It thickened to a beer can consistency, and then softened again.
Next, Aaron's chest grew broader, more defined, and longer. His arms got more buff and stayed porportional. Finally, he felt a few cracks as his facial structure reshaped into Matthew's.
Now standing there was Matthew, but it wasn't Matthew, it was Aaron!
Next, he decided to...