John decided to get a little payback on that Stephanie, the goth chick that had turned him down every time he'd ever asked her for a date. She'd even gone so far as to convince every other girl in his classes at school that he wasn't worth a second glance.
"Yes", he thought to himself, "she'll be the first."
John turned to his window and squeezed himself through the opening onto the roof. He had a little trouble getting his newly improved physique through (especially with his new impressive wingspan) but he found himself much more flexible than he had been before. He moved efforlessly on two legs and four, switching between them on a whim.
He climbed up to the peak of the roof and spread his great wings, taking off with a powerfull leap.
John screeched with excitement, his new vocal cords turning the sound into somewhere between a roar and a screech. He pumped his wings and flew off towards Michelle's house... He had the perfect plan to get back at her...