"Okay... well, that didn't work. I wish that there's two of me not because one is a clone, but instead because I can split into two people, male and female, and merge again. I wish that when I split, the two will keep the same personality as the combined me. I also wish that I have this power because my grandfather left me a magic potion and when I drank it I got the power for good."
Jon concentrated to combine with 'Joan' and everything was suddenly confused, because his memories of the last few minutes were doubled. He was standing near the door and looking at his girl double... no, he was standing farther in and he was a girl....
A moment later he realized that the wish had worked perfectly. He had two sets of memories from the last few minutes because he had been two people. And he was a guy. The wish hadn't done something stupid like make him be two sexes at once.
He looked over at the pile of clothes that his Joan half had been wearing and thought, well, it did do something a little bit stupid. So he made another wish. "I wish that when I split or combine, everything splits or combines in the way that I think makes the most sense."
He needed that, or it would get complicated. The problem wasn't just clothes... What if he was two people, they both ate some food, and they merged into one person with one stomach? What if one painted her fingernails? What if one had long hair--Jon was lucky he didn't merge into one person with inbetween length hair. He had to hope the wish could tell what was best.
Jon concentrated and he was instantly Jon and Joan again. The split clothed Joan in a way that made the most sense--Joan had a slightly altered, female, version of Jon's clothes. He still remembered everything, including everything from both Jon and Joan from the first time.
"Hey, you, Jon? Joan?" said Jon.
"It worked!" replied the girl. "I have the power to split into a boy and girl! It's so strange being called Joan, but it worked. Now we can try our plan..."
"Which means we need to merge again," said Jon.
"Right," replied Joan. "It's a simple plan. As one person, I need to psych myself up to have sex as a girl. Then split, and do it. It's easier to convince myself rather than to be two people and have one convince the other."
"Yeah," said Jon. "Except I can't fool myself. I can't pretend to convince myself. I have to decide to be willing for real or it won't work."
"We have to combine," said Joan. She concentrated, and the two recombined into one Jon. Once again, Jon remembered being in two different places, one as a girl and one not. His clothes were his normal Jon clothes and there was no extra pile of clothes this time.
Jon sat down and thought. Could he do it? Could he really decide that he was going to split into two and have sex with himself? He knew (because of an earlier wish) that he would enjoy it... but the idea of it was gross in a way because if he was the girl it would be sex with a guy... on the other hand, why would it be any worse than touching his own body parts when he was just one person?
A while later, Jon...
