"Transform or Dare, Kyle!" Jen yelled, but before she could Kyle had already hung up.
"Fuck! Damn it! I'll get that little bastard though." She paused and heard her mom shout her name and she cursed again and pulled on her clothes, not even thinking about underwear. "God damn it!" She yelled again, and rushed downstairs, hugging her mom who looked at her slightly askance and then said, "Jen aren't you forgetting something?" Jen's mother asked, cupping herself meaningfully. "Nope!" Jen yelled, and rushed out, hurrying into her car and turning it on. She took a deep breath and then smiled and pulled out of the driveway. Clearly this was just some stupid joke. Even as those words crossed her mind however she turned the corner and saw her neighbors dog, a big female rottweiler. The dog started barking and running towards the car and Jen panicked, remembering Kyles words, and throwing the car into reverse and speeding away down the road, the dog gradually fading behind her as she headed to school, smiling at her victory over the dog.
When she made it to school without any other incidents she only grinned wider and made her way to her first class, English, ignoring her friends and simply walking straight to where Kyle sat and sitting down on his desk in front of him. "Transform or Dare, douchenozzle?" Kyle looks up at her and then stops, staring at her skirt and Jen says, "Hey! Kyle." He snaps back up and says, "What? I don't even remember what you said."
Jen realized suddenly, he'd said she wouldn't wear panties! She smiled and spread her legs a little wider, and started to think about just what she'd do to the sick little fucker. "Oh nothing, what's up with you Kyle?" He blinked again and looked up from her bare slit, peeking out from her skirt and said, "What? I don't even...Why are you being nice to me." Understanding dawns suddenly and he curses then is about to say something when the door to the class flies open and he is knocked down by a huge female rottweiler that slams into Jen and presses her to the floor.
Kyle stands, dumbfounded, obviously expecting but not ready for this, the rest of the class ignoring it as the dog forces its nose against Jen's slit, which spreads wide as the dog presses it's narrow muzzle in, then spreads her wide with it's paws, Jen's vagina gaping at least two feet tall and tight around the dog as it's hind feet scrabble over the floor and slowly push it in, Jen's cunt seizing around it as she starts to cry, dragging it in as she feels tiny nipples pushing out from her skin and growing into two more sets of small breasts as her ears become the pointed velvety ones of a rottweiler. Thankfully the changes stop as her body returns to normal size and she glares up at Kyle through her tears. "Well done fucker, you get both now."