"Last call for teacher's registration!" A voice rumbled through the hall. "Last call!"
"We need to hurry, Brandon!" Loki said as he saw the registration line. "You need to be bigger!"
He used his magic on Brandon and in a few seconds the kid began to grow. Legs and arms stretching and growing some lean muscles, hands and feets doing their own as they became larger and larger at every second.
Brandon's chest grew some respectable muscles, abs and pecs. Shoulders and neck widening as they got adult proportions.
Finally, the speedo who used to be Kyle became to stretch its fabric as the bulge inside him grew from boyhood to manhood. At last, the 2 inches dick had become a decent 6 inches tool with two hairy testicles behind it. As Kyle was still aware of his body, he could feel how his grandchild body was developing through him. For no particular reason, he felt proud of how a man Brandon had turned into. He thought on the set that his heritage had created and even though he was just a speedo now he could feel his own manliness at top of pride.
"Be an adult it's too weird" Brandon said with a manly voice. "I don't know if I can handle with these muscles."
"Don't worry, Brandon" Loki said. "If we won, I promise I will turn you in any age you want. Now, we need to move!"
"Wait a second! My speedo is too small! It's still a kids size!" Brandon shouted.
"Sorry! I forget!" Loki said as the small speedo grew to cover Brandon's adult package. After it grew, Brandon adjust it as he touched his new endowment.
"Can you feel it, grandpa?" Brandon whispered to his speedo. "I hope you don't mind, I swear I won't fart or pee on you. Please, take care of me." He felt some rubbing on his balls and he thought that that could be his grandad way to agree.
"Done it!" Loki said loudly as he returned from the registration line. "We are registered mr. Brandon. Hey? Why do you look so thoughtful?"
"I was thinking on my grandpa, I know he felt me growing into a man and I just want to make him proud."
"You will, and your dad too." Loki said as he swung his waist. "If you're worried that you're not as big to make him proud, I can help with that."
Brandon felt a sudden arousal and a long moan came from his mouth. He was feeling how his 6 inches turned into a 10, and his balls inflate as balloons. Now he was sporting a big bubble under his chest. Kyle was in a weird mix of being disgusted by holding another man's penis and testicles as they grew big and proud of knowing his grandson was overwell endowment.
"Swimmers, take your positions!" The speaker voice rumbled again. "The race will began in 5 minutes!"
"Are you ready?" Loki said grinning.
"Yes!" Brandon said with a thumb up. "Let's show them who have the big balls around here!"
Kyle tingled a little on Brandon's balls after hear that.
"Swimmers! Ready in 3..." A young lady said through a microphone. "2... 1... Go!"
Brandon jumped to the water along with 12 other teachers. The race was tough since the beginning, some of these people where really fit and prepared. Women in the top of fitness and men who definetely expended some hours at gym.
Loki was worried that Brandon couldn't make it, so he grew his muscle a little bit as he was swimming. Brandon didn't noted but his hands and feet were larger too now which gave him an extra boost.
After he completed his part on the competition and joined Loki, the nordic god jumped to the water with no doubt. If Brandon was good, he definetely was towering all the other competitors. With Loki in an obvious advantage, Brandon took a break and sat on the floor.
"Are my feet bigger than before?" He said as he saw his new size 14 feet. He moved his toes, it was funny to think how big he was now compared to the puny boy he was an hour ago.
"Be an adult it's too weird." He repeated.