"What the...?" Jake pulled a jock strap off of the medallion. Judging by its size the prevous occupent was pretty well endowed. Jake looked at the nam on the back "M A R K, shit thats the guy thats always bullying me I don't want to be that dumb jock!" But it was too late even as he threw the jockstrap to the ground he felt the tingling sensation intensify and spread throughout his body. Almost immediatly his clothes began to get tighter and he started to itch especially around the crotch region... Knowing the change was iminate Jake begin to head home at a fast pace. He took off his shirt and shoes as they were getting far to tight.
Speeding up Jake could feel Mark's personality slowly creeeping into his mind, his intellegence was starting to fade and thoughts about making out with girls, cursing and playing football forced their way in. "Shit I gota keep it together..."
The hair on Jake's body begin to lengthin and lighten to blonde. He felt his chest expand with muscle, his once invisable abs became more defined and his pecs pushed out. Jake flinched as his shoulders expanded and his lats grew, his calfs and bicepts also buffed up. "Well atleast Mark is in good shape..." Jake grimaced.
"Ugh" Jake cried out in a quicly deepening voice as his face changed. His jawline grew sharper as his face became more mature (and more handsome.) His adams apple protruded even more as Jakes voice dropped several octaves. His jeans began to rise slowly as he grew taller, going from 5"10 to 6"2. His feet and hands grew slightly to compensate for his new height. Jake moaned but didn't stop as he felt his dick grow several inches sending waves of pleasure through his body. "Theres my house said Jake/Mark in his now deep and sexy voice. As Jake walked up to the front door he stopped and felt momentarly dizzy as the final changes completed themselfs. The once sparse brown hairs around his ankles turned blonde and grew up his legs as his hair turned into a short jockish buzz cut. Mark's personality had completly eclipsed Jake's so when he reached his room he was not surprised to see the room of a teenage jock, and a hot muscular 17 year old staring back at him from the mirror.
"Damn im hot" said Jake/Mark as he jacked his 9 inch cock finally cumming from the pleasure of the tf and his new body. After cleaning up. Jake/Mark looked at the medallion and Jake's shirt still in his hands with a wicked grin...