While all the other vials had animal symbols, one of them had a clock symbol on it. "Is it a clock fragrance or something?" Erik wondered while he sniffed the tiny bottle. It didn't has a smell but it made him to sneeze and drop a few drops on a small plant on his desk.
Then, he felt hungry and quickly lost interest on the vials. He went to the kitchen to eat something, so he'll be checking them when he's back.
After eating a sandwich he returned to his bedroom just to see that his small plant had suddenly grown a lot, so much that it was barely contained in its pot. "Jeez!!" Erik shouted surprised and immediately got an idea.
It was midnight when Erik sneaked in his neighbor Fredrick's bedroom. Luckily for him, he can do it through his own bedroom's window. That kid has been a pain in the ass for years and he needed a lesson.
Fredrick was deeply sleeping and he didn't notice that his 16 years old neighbor was right next to him. Erik grinned while he opened the clock vial and put its content on Fredrick skin. He was just wearing a wifebeater and boxers so it wasn't too difficult to put vial on his arms, legs and chest. When it was done, Erik took a step back and watched.
After a few seconds an odd gurgle came from Fredrick's gut followed by a fart. It was unexpected and mildly unpleasant. Then, he began to grow up.
His body was aging quickly, his legs were lengthening until his feet came out of the bed. Muscles started to appear and his bulging thighs thickened until they were as meaty as horse legs. To match them, his feet began to grow wide and longer, his toes took a very manlier look as they lost their baby fat.
Erik was looking how Fredrick's arms were lengthening too and fell out of the bed, his hands were growing big and calloused proportionally. His arms got thick biceps and his shoulder turned wider, it looked like he was hiding bowling balls inside his skin.
While his chest pumped up, Erik saw how Fredrick's wifebeater was moving up revealing his belly. Two solid pecs began to be visible on him, like bricks perfectly defined by the wifebeater's fabric. Also, abs started to form and his back became wider. At that moment, he was two or three times bigger than before. His body was too big for the bed he was sleeping on.
Fredrick's neck, which used to be thin, began to wide until practically merged with his jaw. Meanwhile, his face took a manlier look as hus jaw got squarer and his nose grew a little bit.
Finally, hair began to be visible on Fredrick's body as a shadow covered his jaw and sideburns. It moved down to his neck and went under his wifebeater which was going to burst out in any minute. Hair covered his chest and his upper arms, but it was also visible in the rest of his arms, including his now manly hands.
The hair moved downward his wifebeater until it's visible a thick treasure trail on Fredrick's belly which kept going down to where Erik knew was Fredrick's new pubic hair. Finally, kinky hairs appeared on the hairless part of his legs and over his manly feet. Fredrick was a very hairy guy who now looked even older than Erik.
"It's not over yet." Erik smiled when he realized that something else was missing. In Fredrick's crotch a big bulge began tent in his tight boxers. That bulge was holding a new and manlier set of dick and balls. It lengthened until the dick's head was coming out from his tight boxers. It's shape was perfectly defined as it's mushroom head was clearly visible and some veins were clearly visible through the fabric.
"He looks older than me." Erik said. "I wonder how will he react when he discovered it at the morning." Erick was impacted of how big and hairy was his neighbor now.