After a few seconds, Jon turned his head and saw Karyn laying on his bed wearing the white lingerie. She got up and walked towards Jon, her large breasts bouncing as she approached. Jon gulped and stood up.
"Jon, what are you staring at?" Karyn asked, then she giggled.
He immediately looked away. Karyn was his friend, not his plaything. But when he looked at her, that's all he could think of.
He glanced at the floor. The stone was gone! Zoe must have taken it.
He looked in Zoe's room, but she wasn't there. Karyn walked up behind him and rested her head on Jon's shoulder. Jon could feel her bare breasts pressing into his back.
Then a noise startled him out of his state of arousal: The front door had been slammed. Zoe must have left!
Jon ran downstairs and went out the front door in pursuit of his sister.