"My little, little, adorable sister... What should I do with you now?.."
Jon gasped as he turned his head up so he could see Mark's face at all.
"I really, really want to have some more fun with you but I don't think you are of a suitable age for me at the moment. Also you need a little bit of time getting accustomed to the idea of all the things I'm going to make you do."
Jon shuddered as he heard Mark mentioning 'things'. Surely that didn't mean going to movies or anything as innocent as that.
"Why don't we do this" Mark continued looking Jon in the eye. "I'll go and have some fun with my new powers out in the town. In the meantime I leave you here to mature nicely for me, huh? Then, I come back in the evening and I give you the night you'll remember your whole life? How that sounds to you?"
Jon started shaking his head in disbelief. A small and squeaky "No..." escaped his mouth. He covered it with both of his tiny hands realizing how high his new voice was.
"I can't hear any objections..." Mark said with a smile grabbing Jon's small arm in a wrist. "In that case... I wish that in the next three hours until 7pm Jon here would age exactly 6 years. I wish that the mother nature to be quite generous in his new puberty... I wish that for this time he'll stay home and do roughly whatever a girl at his age at the time would do."
Jon shivered as he felt magical tingling running down his spine.
Mark let his arm go and turned around to leave. Just before the door he turned back though.
"Actually..." he said. "One more thing before I leave..."