What no one realized (yet) was that because Karyn was now Tim's best friend and not Jon's, the wishing stone was never shown to her. And that meant that she never made her careless wish which caused her to obtain larger breasts and blond hair.
However, the sticky notes that Mikey created and planted around the school still existed, since it only mattered that the wishing stone be in Jon's bedroom, which it was.
And now, another of those notes was about to found ...
