As both twins grew, their clothes got ripped off. Mark and Andrew were wearing Speedos under their jeans, their also growing cock created a huge bulge in their Speedos that quickly ripped off too. Both boys loved swimming together after school, but now they ruined their swimming clothes! Ty smiled.
"What are you waiting for? Give them at least some clothes!" Dustin said.
"Don't worry, bro." Ty said, he pointed with his finger locked the door. "No one will be able to see the twins now. Are you happy?" Ty said, but Dustin did not answer.
The transformation seemed to stop. Mark and Andrew now looked like two hunk teenagers. They were huge, almost as twice taller and wider than Ty, muscular... and naked... But in that moment none of the kids seemed to be worried about that. Mark stared at his brother and viceversa, they could not believe what happened.
"Bro... You look amazing!" Andrew said.
"Your voice!" Mark said. "Your voice sounded like an adult!"
Andrew touched Mark's pectorals.
"Whoah! You have stones instead of human pectorals!" he grinned.
"Bro, with these bodies we can become the best swimmmers in the world!" Mark rubbing his brother's bulging biceps.
The twins turned to Ty and said "Thank you, Ty!" at the same time.
"Thank you? Why? Your transformation is not still finished." Ty grinned.
"What...?" the twins said. But Ty was faster than them and snapped his fingers, a white flash light appeared and blinded everyone in the room except himself.
When Dustin was able to open his eyes, he could not believe what he was seeing. Instead of Mark and Andrew, there was only one of the twins. The question was... Who was that boy? And where was his brother?
"Mark and Andrew... I merged both of you into a new boy." Ty smiled. "Now enjoy being together forever!"
The boy opened his eyes. He looked exactly like Mark and Andrew, but he felt definitively as a new human. He started to move his arms slowly, discovering that strange body that felt like two bodies.
"So... Am I Mark and Andrew at the same time?" he said.
"Yes." Ty answered smiling.
"And what about my life? I mean... I felt GREAT. I love being like this... But no one is going to recognize me, even mom!"
"Don't worry about that. Everyone will still recognize you. You are simply different."
"Okay..." the boy said. "I feel that I have the strength of the muscular Mark plus the strength of the muscular Andrew. I have their swimming abilities too. Not only that, but I also have their intelligence combined."
"You must have a name, right?" Dustin asked.
"Of course, my name is Mark Andrew. But you can call me simply M.A.." he said flexing his biceps. They were huge!
Ty quickly made appear a black Speedo on the air. M.A. took and wore it.
"Thank you Ty! It's the same model I was wearing when I was two twins!" he said.
"Of course, but I made it bigger for your new body."
M.A. noticed that a big bulge appeared in his crotch.
"Awww... What's this? Do I have to wear this huge bubble in my Speedo?" M.A. said. "People will laugh at me!"
"No one will laugh at you. Everyone will wish to be like you! That 'bubble' is in fact your cock. You now have an older body, you can't change that.
Then Ty made appear the same t-shirt and jeans that Mark and Andrew were wearing before they ripped off them. M.A. wore them. His t-shirt was now very tight and it showed off all his muscles. M.A. felt great with that t-shirt, now he was prepared for any bully attack!
And finally, M.A. got also new bigger glasses and shoes. M.A. was definitively a perfect copy of Mark and/or Andrew, but he was older, bigger, stronger and clever.
Ty unlocked the door, and the three boys left the room.
"I can't wait to see my body's swimming abilities." he said.