... a tennis ball. Katie drew back her hand quickly, but her body was already starting to tingle with change. Thankfully, she hadn't put any clothes on yet as her flat chest started to expand quickly.
Each nipple enlarged slightly and pushed out from her chest. Katie dropped to her knees and moaned as she clutched her growing breasts in her hands... the erect nipples pushing through a small hole between her fingers.
"Hey! Don't start without me," said a voice on the other side of the room. Darting in from across the room was Tiff. "Wow! It worked! I can't believe it!
Katie hardly heard any of it... she was in a state of ecstasy as her breast growth slowed and she looked down at her breasts. "Not bad," said Tiff, "but you started out small. What if you were to..."
She suddenly stopped and ducked as a basketball-sized dodgeball came sailing in from across the room and hit Katie square in her exposed chest.
"Alright!" yelled a boy outside. "Not only did I peg her good, she showed me her tiny boobs!" the door slammed.
Tiff got up, breathed a sigh of relief as she walked over to lock the door. "Well, at least neither of us got nailed in the head. I hate having headaches... makes it hard to concentrate on... OH MY GOD KATIE!"
Tiff stopped because Katie was clutching her chest where the ball had hit her... and her breasts were already starting to enlarge. They had reached the size of softballs, a healthy C-cup already as they poured over Katie's arms and grew larger. "UHMHPH!" moaned Katie as she clutched her enlarging breasts. They no longer fit in her small hands and her erect nipples poured over the boundary of her wrists. "Tiff!" Katie moaned... "DO SOMETHING! THEY'RE TOO BIG!"
Katie's breasts continued to surge out of her chest, nearly causing her to fall over. Tiff scratched her head and...