Jeri's description just reminded me of Charlie and the Chocolate Factory. Here's a little bit:

"It always goes wrong when we come to the dessert," sighed Mr. Wonka. "It's the blueberry pie that does it. But I'll get it right one day, you wait and see".
"Violet," screamed Mrs. Beauregerde, "you're swelling up!"
"I feel sick," Violet said.
"You're swelling up!" screamed Mrs. Beauregarde again.
"I feel most peculiar!" gasped Violet
"I'm not surprised!" said Mr. Beauregarde
"Great heavens, girl!" screeched Mrs. Beauregarde, "You're blowing up like a baloon!"
"Like a blueberry," said Mr. Wonka
"Call a doctor!" shouted Mr. Beauregarde.
"Prick her with a pin" said one of the other fathers
"Save her!" cried Mrs. Beauregarde, wringing her hands

But there was no saving her now. Her body was swelling up and changing shape at such a rate that within a minute it had turned into nothing less than an ernormous round blue ball - a gigantic blueberry, in fact - all that remained of Violet Beauregarde herself was a tiny pair of legs and a tiny pair of arms sticking out of the great round fruit and a little head on top.

Jon