"Let's go to watch a movie." Madison said before she turned her head to look at her former little brother, now big brother. He was sheepishly looking to the ground and trying to avoid any visual contact with people on street. However, he can still hear them talking about him. He felt so ashamed and miserable. He was constantly telling himself it's just a horrible nightmare and he's going to wake up on his bed at any minute.
On the contrary, Maddie was in s bliss of happiness, her original plans were ruined but this experience was even better. She can get some revenge on her annoying little brother, at the same time she can feel like an almighty being, at least for Ryan. She had a big smile that contrast with the tears on his brother's. "Come on, Ryan. Big boys don't cry and you're a big boy now."
Madison didn't realize immediately but her words were taken as a command for Ryan and he started to grow very fast until he was as big as a skyscraper. His feet were huge and they can't stand on the street, so he started to crush vehicles, bicycles and basically everything on his way. It was a complete chaos and Ryan was completely mortified. He can't hear anything, people around him were so tiny that they looked like ants.
He didn't want to hurt anyone but the chaos was making him clumsy and he can't avoid tripping and falling over a forest nearby. He can feel his back crushing a lot of tree, and probably animals and people too. His briefs that until then had managed to cover his manhood, finally bursted out exposing his gigantic cock and balls. He can't feel worse after that but he wasn't expecting that he started to pee.
A river of yellow liquid was flooding the street, people were running away disgusted and scared of what's going on. Some of them were trapped under Ryan's huge feet and a few ones got crushed by his balls. But the most unfortunate was a guy who got inside his asshole. They're so tiny that Ryan didn't feel anything but itchiness. If course, that doesn't means he wasn't embarrassed. There wasn't anywhere to hide.
Meanwhile, Madison was watching the chaos as a show for her entertaining. It was an accident, but a happy one because she was enjoying so much that she forgot about the movies. She knew she could reverse Ryan's growth at any moment but she was doing the opposite. Ryan was getting bigger and bigger while chaos keeps going on. She made him incontinent, that's why he pissed himself and maybe he would be shitting in a moment.