"OK," Karyn said "so I've got a..." she trailed off, she had noticed something about Jon's chest that wasn't there when she had left the room. His nipples were bigger and visible through his shirt and beyond that he seemed to have slightly more there than before.
"What?" Jon said confused "Why are you staring at me like that?"
As Karyn watched the budding breasts grew slowly, just fast enough to be noticeable.
"Jon, your chest!"
He looked down, stunned, in a few seconds he could feel their weight, they were gaining speed as Jon and Karyn stared.
Soon they were undeniably boobs. Within another minute they had ballooned out to nearly as big as Karyn's and there they stopped. Karyn looked up at Jon, but soon found her eyes wanting to return to his chest, she found his new boobs distracting in a way she wasn't comfortable thinking about. They stretched out Jon's shirt which was now much too tight across his chest, which Karyn also found herself trying and failing to avoid noticing.
Karyn shifted position uncomfortably, her panties didn't really have room in them for a penis, and her fitted jeans really didn't because of their lack of stretch. Then something occurred to her.
"Wait!" Karyn exclaimed, causing Jon to look at her even more confused. "Our clothes didn't change with us!"
"Yes..."
"That means that whatever is going on now isn't like most wishes, reality hasn't changed so that we were always like this."
Jon's eyes went wide as he realized the implications. "Other people might notice we're different!"
"Yeah!"
Jon grabbed the stone.
"I wish for Karyn and I to know what the effect of my wish for something interesting to happen was".