Jack lifted himself out of the water to find himself surprisingly shorter than before. His muscle mass wasn't quite as large as it was before. His bulging muscles had shrunk down to average size and his abs were barely visible. He reached for his swim trunks which were now falling off of his thinner frame. Jack looked up and noticed that Aaron was bigger, stronger, and more fit.
"What the?!" Aaron and Jack stared at each other in shock, unsure how to react. Then it crossed their minds - Aaron must have taken Jack's muscle mass from him. But how?! It must have been the pool! Jack quickly hoisted himself out of the pool, stumbling to keep his pants up. Aaron couldn't help but get hard to see his hot friend almost butt naked. Aaron hoisted himself out of the pool as well, displaying his boner through his now skin tight swim trunks. However, he was too busy watching Jack struggle with his own swimsuit to realize he was on display himself. If the water gave him Jack's body, would it give him other attributes if he wanted them? Aaron decided to test his theory, but on who?