After the reading the card, Jon felt dizzy and then looked at the others. He was sitting in Zoe's chair and Zoe was sitting in his chair. Otherwise, there didn't seem to be anything wrong. Jon was relieved. He thought something weird would happen.
"Hey, Jon. Nothing happened," Karyn said to Zoe.
"I'm not Jon. I'm Zoe."
"What? But you look like Jon."
Zoe was confused, and so was Jon. Zoe looked down at herself. She was still a girl.
Then Jon spoke up. "Zoe looks normal to me."
Jon's mom looked at him. "But, you're Zoe."
Jon looked at his mom and then noticed the mirror in her direction. In the mirror, he looked exactly like Zoe and Zoe's reflection looked like Jon.
"Zoe, look at the mirror."
She looked and saw her reflection.
Apparently, everyone (except Jon and Zoe) see Jon as Zoe and Zoe as Jon.