Sarah thought for a moment and then smiled before saying, "I wish that for the next ten minutes anything I say would become Jon and Karyn's new reality."
"Jon you and Karyn will forget about the wishing stone and believe that instead your Grandfather sent you a ring of wishes. The problem with this is that you and Karyn foolishly realized too late that it only had so much power before it was used up and disintegrated before your eyes. This would not have been so bad if not for the last wish that Karyn made when you laughed at her for accidentally giving herself long blonde hair and a boob job. She was so mad that she wished that you and her swap bodies until she wished you back with the ring. It was at this point that the ring fell apart and you both realized that you were now stuck as each other."
When Sarah finished talking there was a bright flash as her eyes were pulled to the side for a second. When she looked back she noticed that Jon was blinking his eyes, like he was confused for a second before saying, "Sarah what are you doing in Jon's room?"
Sarah quickly realized that Karyn mind was now in Jon's body and was not under her sleep spell and said, "Karyn sleep." Jon's body suddenly slumped over asleep on the floor.
"That was close," Sarah said while catching a deep breath. "OK, Karyn you will forget you saw me here and not wake up until after I leave Jon's house. When I leave you will find yourself on Jon's bed waking up after having took a nap to settle your nerves."
Seconds ago Karyn's body in her room fell to her knees in her room blankly staring ahead.
Smiling down at the new Jon Sarah smiled got a evil little smile, as she thought about what she would do to Karyn. "Karyn you will ...