"The question now," said Karyn, "is how do we wish ourselves back to normal. We can't undo Emily's wish."
"You are normal!" Emily said with a large measure of exasperation.
"Yeah...you call this normal?" Karyn replied, as she hefted a boob. "I can't stand to walk with Jon's boobs bouncing everywhere."
"How about this?" Jon offered. "Emily wished that our heads were on each others bodies. Why not wish that our bodies were attached to each other's heads?"
"Hmmm..." Karyn said. "It's the same result, but a different wish. Instead of moving heads from one body to the other, the bodies would be moving. Let's give it a try."
"Okay..." Jon took the rock. "But first, take Emily out of here so she won't hear the wish. Then maybe she'll leave us alone."
Karyn pushed Emily out the door of her room, and locked it.
"Here goes," Jon whispered. "I wish that I had Karyn's current body and my own head, and that Karyn had my current body and her own head, and that we would be healthy and whole."
There was an immediate flash and they both looked down.