Outgrowing everything

"Sure," Jon said, "As long as you let me make the wish."
"...Okay, I suppose," Karyn replied as she handed over the rock. "But no tricks! I'm watching you."
As Jon took the rock, he said quietly "I wish that I can make wishes without speaking by first thinking 'Rock, listen to me, I wish....'" After that, he thought 'Rock, listen to me, I wish that everytime Karyn wished or used the remote to cause some form of body modification to me without my consent that she would spotaneously gain ten pounds.'
"Okay, I wish that whatever form me or Karyn take, we will find fitting, stylish clothing in my backpack."
"That sounds good. Thank you," Karyn said, "Now to test." She pointed the remote at Jon, hastily pressing keys.
"Karyn, no!" Jon said as he felt his body changing again. His lips tingled as they filled out becoming beestung and coated with fire-engine red lipstick. His eyelashes grew and curled becoming very seductive as his eyes grew rounder and the rest of his face became coated with makeup. His hair lightened to a bright platinum blonde and grew to his mid back as his chest picked up two cup sizes and began leaking clear white milk. His ass also expanded well past the limit of his outfit as his thighs rounded out becoming covered with dimples. Finally, his stomach growled and grew rapidly, lookng more and more like that of a pregnant woman with each second. It stopped at around the nine month size, as the rest of his form took on extra weight making him look extremely heavy and knocked up.
"Karyn, what the hell did you do? I feel like a fucking cow!"
Jon watched as Karyn's shirt rode up even higher as her stomach gained several extra rolls.
"Well, I figured you would try something shifty, so I went ahead and pulled a trick of my own. Don't worry, you aren't pregnant, you just look that way because I want you to be as feminine as possible since I'm so fat now," she said as she jiggled her fat tummy. "And since I will apparently keep gaining weight for changing you..."
Karyn tapped the control again. Jon found another 20 pounds distributed evenly across his gravid form making him look even fatter as Karyn chin(s) swelled more and her tummy folded over top of her jeans, which lost their button and zipper.
A now very pregnant Jon whose breasts were leaking even more said while winking, "Let's call a truce and go find someone else to torment there, fatty."
"I agree," said a positively corpulent Karyn, "but who can we find out here..."