"Do you notice anything at all?" Emily asked, with a big smile on her face.
Jon and Karyn looked themselves over and then looked at each other.
"Norhing at all," Jon said, as Karyn nodded in agreement.
"It must be something minor," Karyn said. "Something that's difficult to notice."
"Yeah, it's a minor change," Emily said as she continued to grin. "It may take you some time to notice it."
"Well...I'll take that as a challenge," Jon said.
"So will I," Karyn exclaimed.
Emily wondered when they would realize that their heads had been swapped. Jon stood there, in a very Jon-like way, with his hands in his back pockets. But he didn't notice his new Karyn-breasts or plump girlish bottom.
"Hey...let's go to the mall," Karyn said. "I've got some clothes to return. Jon, we can try to figure out what's different while we're out. Maybe we'll notice something in one of those big angled dressing room mirrors."
"Good idea!" Jon said. He grabbed Karyn's jacket and pulled it on, but placed his own wallet in his back pocket; while Karyn grabbed her purse as usual.
"I think we'll figure the change out, Emily," Jon said confidently. "I'm not great at 'Figure out What's Different' puzzles, but she's great at them," he exclaimed, while pointing at Karyn.
"Just give me a second before we leave," Jon said. "I'd better go to the bathroom now. I just had a large drink a little while ago, and you know how small my bladder is."
With that, Jon stepped across the hall into the bathroom. Emily listened as she heard rustling around inside, and then the faint tinkle of urine hitting porcelain.