"I wish," Sarah said, "I were back in my own room with this rock."
One moment, Sarah was standing there in front of Jon; the next she just disappeared.
"Oh, shit!" shouted Jon. "No, no, no, no, no, no! I need to get that back. Lord knows what Sarah's going to do with it."
Jon bolted out of his room, downstairs, and out the door. Sarah lived within walking distance, but even then, he had to get there quickly before she started making wishes that could cause real damage. He set off toward her house as quickly as he could.