Timothy got home and found everyone was asleep. He kicked off his shoes and went upstairs. On the stairs he almost tripped on a t-shirt lying on the ground. He picked it up with the same hand holding the medallion and felt a small tingle. Shrugging it off as nothing he saw the shirt was his thirteen-year old brother's.
He groaned and went up to his room and set the medallion on his bedside table. Then he went down to the laundry room and put the t-shirt into the basket. By this time he had begun to notice his socks seemed to be getting loose. And he had to continually pull his jeans up. Shrugging he kicked off his socks and stumbled upstairs. His clothes seemed to be getting bigger, but by the time he got to the bathroom it seemed to have stopped.
He did his normal 'before bed' routine. He... went and hopped in the shower. While showering Timothy noticed how much smoother his skin seemed to be. No rough hair anywhere. Then he stepped out of the shower, wrapped a towel around his waist and looked in the mirror. He only just stopped himself from yelping.
Timothy looked again and saw it was true. The thirteen-year old face of his brother Alex looked at him from the mirror. "I'm... this isn't possible." he mumbled, it was Alex's voice that spoke. And it could only be. There in front of him he could see his brother's head and torso. He even reached up and felt the wet, blonde hair. It was real alright. And the worry in his now blue eyes confirmed it.
Timothy smiled a little though. On the other hand, Alex was very active, and far more athletic than Timothy had been at that age. He could see the vague definition in his pecs. Wet from the shower and he had a sort of boyish charm. "Well if I'm stuck like this, I could probably get used to it. Only problem is, there can't be two of us."
He dried off and went back to his room and stood in front of his full length mirror. He turned a little, though kept his eyes away from waist level. He also had to find something to wear. Deciding to take his chances he pulled on the smallest clothes he had in his room and snuck into his brother's room. He grabbed a bunch of things from different drawers and snuck out. "Lucky for me he's a heavy sleeper." Timothy whispered to himself as he shut the door.
Timothy found a pair of boxers in the bunch of clothes he'd grabbed and shuddered. They were spotlessly clean though and he pulled them on. He looked himself over in the mirror again, Slim, athletic, a little toned and tanned. "Now what changed me, and how do I solve the problem of two Alexes?"