"Karyn...can we talk?" Biff said. "Just the two of us."
"I can wait," Sarah said. "Do you want me to hold your bookbag?"
Karyn handed it over and she and Biff went over to the corner to talk.
Neither of them noticed Sarah looking through Karyn's bag.
Sarah eventually found what she was looking for, Karyn's phone. She took it out of the bag and looked at it.
Fortunately for Sarah she and Karyn had the same type of phone. The only noticeable difference between them was the cases and apps installed. So Sarah took the cases and switched them. She then place her phone into Karyn's bag.
Satisfied Sarah looked up over to Karyn and Biff to see if they had noticed. Biff was gently running his hand up Karyn's arm and Karyn giggled. Sarah turned away feeling as if she was about to throw up again.