When Jon walked through the door to his home he almost fell over his sister.
"Hey, jerk, watch where you're going!"
Zoe, 2 years his junior, was sitting on the hallway floor trying to tie her long, high-heeled boots. She was clothed in a long, black dress, and her face was made up pale, with contrasting details. She was the opposite of Jon: spontaneous, independent and confident. Jon, on the other hand, was more of a thinker, preferring to plan out in advance, and he didn't have the great confidence his sister seemed to have. Though, despite their different nature, or maybe because of it, they had a good relationship.
"Sorry, I was completely in my own thoughts," he answered. "Do you need help with those shoes?"
"Would you? Thanks."
Jon helped his sister, and as she left, he walked up to his room. God, he was horny. He walked into the bathroom he and Zoe shared, locked the door and started fantasizing. As his cock grew harder, and his mind hornier, he had an idea. He had a fantasy, a sick and twisted one, which he would never be able to live out. However, with the stone, everything was possible. On the other hand, he didn't want to live out the fantasy for the rest of his life. And what if something went wrong? He stopped his masturbation, and sat down on the toilet, thinking. He would have to design a series of wishes to prevent anything from going wrong.
Jon got the stone from his pants, still thinking about the safety catches. He would have to wish that when his fantasy was fulfilled, he would return to his own, original self, the way he was here and now, with the stone still in his possession. That would probably solve most problems. He'd just have to set a time limit, or some other way of fulfillment, to his wish.
"I wish," he said, his hands trembling, "that when the conditions of the following wish, which will for a while change my life, I will return to my own body, the body of Jon Gibson, with this wishing stone still in my possession."
His cock was now rock hard in anticipation to what he was about to do. "I wish... I wish..."
