"Let's head to the pool. We can swim and play while we make a plan." Sophie told her brother.
"That sounds fine to me." Alex replied.
Both kids changed their clothes into swimsuits and went outside. After walking a little, they saw the magnificent pool ahead.
"Wow! It's huge!!" Alex replied and pushed his sister who immediately started to chase him until both kids were at poolside. Alex was ready to jump in when a cute young man wearing only a red speedo stopped him.
"Sorry, kids. It's Adult Swim time now. You can go to the beach nearby or stay in the loungers." The young man who Sophie assumed was the lifeguard told them.
"Oh! Come on! We're not going to disturb!!" Alex replied but the lifeguard didn't change his mind.
"Come on, Al. We can still swim in the beach." Sophie said as she walked away. Her brother reluctantly followed her. He wasn't upset because he couldn't swim but because he couldn't swim in the pool.
When they arrived on the beach, Sophie immediately jumped in the water and quickly found a group of girls who she can play with. Meanwhile, Alex was still thinking of the pool he wasn't allowed to come in.
"Hey kid! Watch out!!" A young man shouted at him before a volleyball landed in fron of him. "I'm sorry. Are you ok?"
"I guess so." Alex replied as he watched at the young man. He was big, buff and beautiful. Like the typical handsome jock from the teen movies. He was wearing a pair of green swim trunks that seemed small on his big frame. "Wow! You look like a movie star!"
"Thanks. I'll appreciate all the compliments." The young man replied. "Are you here alone?"
"No, I'm with my sister. She's playing with some girls she met in the beach."
"Well, if you want you can join me and my friends in our volleyball game." He pointed at a group of young men waiting for their ball. All of them looked as buff and good looking as this guy.
"Really? But I'm younger and smaller than you. I would give a disadvantage to the side were I play." Alex said.
"Don't worry about it." The young man said. "We have a little thing that could fix it."
"What it is?"
"This." The young man said as he took out a blue speedo.
"A piece of fabric?" Alex dubious asked.
"Yeah. Try it."
"It's too big for me." Alex said as he inspected the clothing in his hands.
"Just try it." The young man insisted.
"Ok." Alex put the speedo on. As it was too big he didn't need to take out the swim trunks that he was wearing. "Ok, I'm wearing it. I feel kinda stupid doing this."
"Just wait for it." The young man said with a big grin in his face.
"Wait what?" Alex asked but before he could get an answer he felt an electric feeling moving through all his body. "What? What was that?" He fearfully asked and stopped holding the speedo which fell on the sand.
"No! Don't stop holding it!!" The young man shouted but it happened too fast that it was useless.
Alex body started to pump everywhere. Not just his muscles, but fat and height as well. He grew up over a foot in a matter of seconds, his back widened as well as his shoulders and chest.
His arms and legs grew stronger with big muscles and his hands and feet grew proportionally to match his new limbs size.
"Wooah!" It was all Alex managed to say before he felt that the suddenly and growing pressure in his groin disappeared. His swimsuit can't hanfle his new size and finally gave in and bursted out exposing a huge bubble butt and a well endowed manhood. "Oh shut!" He yelled in a deeper voice as he tried to cover his privates with his bigger hands.
"Use the speedo!" The young man told him without losing the grin on his face. Alex immediately obeyed and put the speedo on, which now fits him perfectly as it showed off his bigger package and fat ass.
"What happened to me? What did you do to me?" Alex panicked as he watched at his bigger feet in the sand, the rock hard pecs on his chest and the humongous bulge covered by the speedo.
"I helped you.. to play with us." The young man replied. "What do you think if we play and then I explain it all to you after we end?"
"Um, ok. But can I get a different clothing. I've never been comfortable wearing speedos and with this body I'm feeling really exposed." Alex said as he watched his back and noticed that his speedo left nothing to imagination.
"Sorry. It's the only one I have. But don't worry, you have nothing that me or my friends hadn't seen before. We can even go to the nudist side of the beach and you could see us naked if you want. Your choice."
Alex stared at his new body and decided to...