There was a bright flash, then a second later Jon's mother opened the door to find it her son's room was completely empty.
She looked about, puzzled.
"That boy must be up already," she muttered as she left, closing the door behind her.
Jon was puzzled by this, as he was standing motionless in the centre of the room wearing high heels and nothing else. How could his mother not see him?
He trotted over to the mirror and looked at his reflection, or at least he tried to. There was nothing there except for a pair of women's heels, moving seemingly of their own accord.
Jon shook off one of the heels and his body immediately faded back into view, still wearing the other shoe. Jon grabbed the other heel and put it on again, vanishing from sight as he did so.
"My wish made me invisible," he watched in amusement as he made the empty shoes in the mirror dance by moving his feet. "Well, mostly invisible. Interesting..."