Since Karyn had just given Jon the notebook, he looked at it to see what had happened, but he didn't consider that the second line might be interpreted as part of the same sentence. "I don't see anything," he said.
"Never mind," said Karyn.
"Somehow I'm still suspicious," replied Jon, but let it slide as they went to school.
As soon as Jon entered the school grounds, he felt him getting an involuntary erection. "I have to go," he said. "You know the drill."
He ran to the restroom, went into a toilet stall and locked the door, and pulled his pants down. His penis was expanding like a balloon, and then a sudden orgasm came with a growth spurt. His balls were merging into it and it was starting to look less straight, more bumpy....
... until finally it grew into a human figure much resembling himself. Another minute later and it looked like Jon was sitting with a girl on his lap, except the girl had been transformed from his penis. Jon waited for the inevitable sharp pain when the girl detached herself from him, and winced when it happened.
She got up and looked for something. A second later, she saw the plastic bag that Jon had brought with him and got out her clothes. In the brief moment when she was glad to have found them, Jon felt a brief tinge of pleasure... anything which made the penis girl happy would bring him some sexual excitement.
Jon came out from the bathroom, and the girl followed him. Karyn didn't yet notice she was nearby; she did notice the lack of a bulge in Jon's pants, but only because she was looking for something like that. She still wondered exactly what the half-erased pencil writing had done, and thought. It must be something at school, but what specifically?