Jon sat there in the chair, Karyn was moaning to herself as he played with her breasts idly. They were both spent, having sex twice in such a short amount of time had worn them both not, not to mention that they were both unused to having sex so their stamina was considerably low. However, Jon recovered the fastest, he gently lifted Karyn's head over him and then put her back down on the couch, and she had fallen asleep after the last session.
Jon was sitting down on the lounge with his eyes closed, then he heard the door opening, he snapped awake and looked at the door, it parted to reveal Zoe returning from her expedition outside.
"Hey Jon", she called out, looked at the door as she closed, it, Zoe continued as she turned around, "I'm home"
One quick look in Jon's direction and her eyes opened wide with shock, "Oh god! You're naked!"
Jon raised a finger to his lips, "shhhhh", gesturing to Karyn with his head.
Zoe walked quietly over to Jon and looked at him, "Did you two do it?", she asked.
Jon nodded in reply, "It's about blood time!" she said, before turning and heading upstairs.
Jon watched her go up and then looked back at Karyn, their wish to swap genitals still hadn't been noticed by anyone else, but Zoe's comment about the two of them stuck.
Was it really that obvious to everyone?, he thought to himself.
Jon stood up and looked around, he gathered his clothes from the floor again, after again gently cleaning out his new vagina the same way he did to Sarah's previously, making sure to clean it completely, he was about to pull up his underpants when he realized that he probably shouldn't just yet. Since he technically had Karyn's pussy and she had his penis, it would probably be more comfortable for her to use his underpants until they swapped back.
Jon leaned over Karyn and picked up her panties, they were a reddish colour and fairly durable, he would have had second thoughts if she was wearing a g-string, but luckily panties were ok. He slipped them on and lifted them up over his legs, they were a little lose around the waist considering they were meant for women with wider hips, and they rode up his butt just a little, but it was just fine on the front, they were quite tight. He could see the folds of his mound poking through the fabric, a little bit of camel toe.
Jon put the rest of his clothes on and went upstairs. Passing Zoe's room, he noticed that she had closed the door, obviously she was trying to give Jon and Karyn some privacy. Jon realized that while his sister was occasionally a pain, she really did care about him too. That "Goth" façade seemed to fade with every new day.
Jon went into his room, he'd realized that there was one thing he told Karyn he would do and it made more sense now if they were going to be borrowing each others sexes on a more regular basis. Jon didn't know for sure but he had a firm inkling that that was going to be the case. Jon strode over to the drawer where his wishing rock was hidden and withdrew it from the drawer.
He walked back downstairs where Karyn was still snoozing, Jon sat back down on the lounge beside her, and he gently touched her shoulder and shook her away.
Karyn stirred, looking around in a slight confusion, unsure as to where she was until she saw Jon. Karyn sat up and stretched, "How long was I out?", she asked.
"Bout half an hour", Jon replied, "You'd better put your clothes back on, Zoe's home"
Karyn hastily started to gather her clothes back up, she put her bra, t-shirt and green sweater back on, but she was hunting around for her panties and couldn't find them. Jon picked up his underpants and gave them do her, "These may fit you better", he suggested.
Karyn tentatively took them "You're wearing mine?", she asked.
"Yea"
Karyn slipped the underpants on, luckily the were elastic so the stretched to fit her new size, she realized how comfortable it was to have Jon's penis between her legs now with the underpants holding them instead of panties crushing them. Karyn slipped on her jeans and zipped them up, they weren't nearly as uncomfortable as before, but still it was mildly annoying, she may try to swap clothes with Jon again later on. Karyn definitely enjoyed having his penis and she wouldn't mind staying swapped for longer. But since she hadn't experienced sex as a woman yet, she wanted to have her own back eventually, however she was content for the time being.
So sitting up and looked at Jon on the lounge, she asked, "What's up?"
Jon held out the stone to her, "Fulfilling one last promise", he said, speaking to the stone he wished, "I wish that Karyn would take this stone from me and repeat all the wishes I made related to my swapping power"
Karyn realized what was happening, impulsively she picked up the rock from Jon's waiting hands and looked at it. Words came to her that she had never thought of before and she felt compelled to speak them.
Holding the stone in her hands, she spoke, "I wish that when I say the phrase 'Give me', anything following this phrase until the conclusion of the sentence I will receive from the person I am pointing my finger at, and the person get what I have of what I am receiving".
The rock flashed and Karyn felt a little tingle at the same time.
She spoke again, "I wish that when I say the phrase 'you can have it back', the last person I traded parts with will get back what they had before the trade and that I will get back what I had before the trade"
There was another flash and another tingle.
Karyn spoke for a third time, "I wish that with all the trades, excluding myself, everyone will believe that myself and the person I have traded parts with have always had what they received. However, I also wish that if I were to point at someone with my middle finger, only the person who I am pointing at and I will be aware of the trade and that if I point at someone with my pinkie finger instead everyone will be aware of the trade that has taken place. I also wish that if I point out exactly what has been traded to a person they would be able to recognize the trade has occurred if the trade was done by any finger other then the pinkie finger"
So, three flashes of the rock and a slight tingling sensation each time, Karyn knew that meant that the wishes had been granted as requested, Jon knew that they worked as well as he remembered the words when she spoke them, the rock glowing signified that the wish had been completed without fault. Karyn could now swap parts along with Jon, and she knew exactly what she was now capable of.
Karyn handed back the stone to Jon, she looked at her hands while Jon took it back upstairs, nothing felt particularly different to her, same old hands. She figured that she would feel at least a little different then before, but alas, nothing.
Jon came back downstairs after a moment and looked at Karyn, "So, what do you want to do now?", he asked.
