Karyn is Tall

Suddenly, someone tapped Jon on the shoulder. Then he heard a boy's voice. "Is that you, Jon?" He turned and stood up. Standing there was a tall, muscular boy with short blonde hair. "Yeah..." "It's Karyn," the boy said. Jon frowned. The male Karyn was taller than he was...*or was he shorter as a girl?* It was hard to tell. "You look like a jock," Jon told her. "Well, look in the mirror. You look like a cheerleader," Karyn retorted. "I was in Spanish...and then I was here...eating lunch." "I was walking...and then I was here." Ellen looked at them both. "I was eating lunch over there," she gestured. "Now I'm over here." Some, but not all of the others at the table seemed to have suffered similar adjustments to position. One of the teachers approached. "What's going on here?" He asked. "Why is everyone screaming?" Obviously, he hadn't been affected, or if he had, he didn't remember it, as all the students seemed to.