Suddenly, Karyn blushed, "Oops, I almost forgot. It's my time of the month again."
As Karyn said this, Jon's thoughts wandered. He had always wanted to get into Karyn's pants, and now he knew how. He felt himself not wanting to be anything but a tampon for Karyn. He wanted to be super absorbant, too. And he would want to talk to Karyn, so he wanted to be able to talk to Karyn with his mind.
As the changes took place, Jon realised that Karyn must be making him want this. It was too late, though. "Karyn, what did you do that for?" he asked
"Sorry, Jon," she said, picking him up, "It's only for a few days..."
