Jon quickly walked down the hall, then looked over his shoulder to make sure no one was following. Then, when he found a secluded spot, he took out the stone.
"I wish to know everything about ..."
At that moment, his friend Tim came around the corner. "Hey, Jon. Why did you run away like that?"
"Tim! How about you ..." Jon was about to finish by saying "give me some privacy", but instead, he stopped when he realized that he had accidentally finished his wish ... and not in the way he intended.
The stone glowed and suddenly Jon knew everything about Tim.