As the days went by, many weird things started to happen to Ethan and Eric. Ethan hid the ring away from his brother, but he decided to throw it away. After all, becoming a pro of a sport is better than obsessing over some dumb jock dick. He felt some guilt, but he knew it would make him happier, and Eric too.
Eric spent most his days coming home from school, and jerking off into his underwear with Ethan's cock, shooting excessive loads. He referred to it as his own penis now, and corrected Ethan every time he would mention it. He seemed at the top of his game, and had lots of confidence.
Ethan had very little confidence, his manhood was so much smaller than it used to be. It started to affect his mind too, so much so that he got often distracted in swimming practice. But he began to notice some other changes, too. Eric seemed to get stronger and stronger, while Ethan lost his athletic abs, even though he was training like crazy.
Eric seemed to get more hormonal, more body hair, and he reached 5'7, nearly reaching Ethan. His clothes would often rip as he wore them, so he borrowed Ethan's older clothes. He wondered how any of this was even possible, considering the 6 year difference between them. None of them noticed the changes, until Ethan became 5'7, instead of his usual height of 6'1.
"I think your getting smaller, bro!" Eric joking laughed, but Ethan started to really think about it.
His height made him less competitive in swimming, he couldn't reach as much as the other guys on the swim team, leaving him in the dust. His body also seemed to become more pale, much like Eric's skin. He looked in the crowd to see his mother there. What is she doing here? He thought. She hadn't seen him play for 4 years. He left for the stalls got changed only to realize his clothes didn't fit him anymore. The swim team made fun of him for his height, now at 5'5. "You're too small for the big leagues, small fry." one of them shouted.
He started crying, his mother came down to comfort him, taking him back home in her car and made him some dinner. Eric was at home, now almost 6'0, using Ethan's phone to text his girlfriend. She sent him pictures of her great ass, and Eric started to jerk off. The final changes came through, as he jerked his cock, it grew an inch and became more pale to fit his skin, he grew more body hair and stubble, he reached 6'1 tall, and came more than he ever had previously. He went into Jeff's room, and took some more of his clothes and underwear.
"Mom, how come I'm so small?" Ethan cried, now at 5'0.
"Its must be an unlucky gene thing sweetie, I'll call the doctors tomorrow, they need to check up on your big brother, too."
Ethan went into his room to find Eric there, Ethan was shocked at his size, he was the same size when he was 17, and he was an entire foot bigger than him. He put his cock away when Ethan entered. "What are you doing with my phone?" Ethan yelled. "Hey, its not yours anymore. You're not old enough to own a phone, so go play in your room". Eric groaned, balling his hand into a fist. Ethan sulked, and went to Eric's room, not fighting back as Eric could easily tackle him. He changed into Eric's clothes and laid on the bed checking his penis, thinking about how he screwed this all up. "I wish I had it back....."