It was all over the news. A mining company had found strange stones in a deep mine in some far off country, and touching them caused the subject to physically transform to what they would look like if they had been born as the opposite sex. Somehow, through meddling and trails, it was found that a separate type of stone could reverse the process. The result was sets of wearable gemstones that could transform the wearer into opposite sexes, being sold for profit.
Craig felt as though he finally got his lucky break. He knew that sex was a top seller, so he invested in the company selling the rare gemstones, knowing he would make a profit. As a reward for being one of the first shareholders, Craig got his own set of Swap Stones for free, and they worked just as advertised. He was surprised to see that his female form was so... well endowed in the... well she had huge tits.
Craig, or Kiley as she likes to be called, felt embarrassed at fawning over her own body at first; Craig had maintained that doing so to women as a man was rude. But one grope of he new tits and a rub of her soft pussy changed all that... Kiley knew that as long as she wore the opposite gemstone around her neck, she would always turn back into Craig just by thinking of her male self.
...
Craig had been enjoying the many uses of the swap stones for weeks; trying on clothes, getting free drinks at bars, masturbating, and of course masturbating some more! But Kiley had been able to keep Craig's secret from her roommates, Mallory and Sara, for the entire time as well. But Craig had some other plans. He knew that his two roommates were bisexual and were going through a 'girls only' phase. They had little luck getting with guys, but they found quickly that dating can be a tricky game for anyone, no matter what your gender is.
So Craig decided that he wanted to surprise his roommates as Kiley, and give them the night of girl on girl action they had been craving for so long... He just wasn't yet sure how to do it. He would have to transform in front of them, which might freak them out... But, they would be out for a few hours and Kiley decided to use that time to get herself off a few times in privacy. Maybe it would clear Craig's head for ideas after! Clear Craig's head it did, and he was so relaxed when he was done, that he took his swap stones off and took a nap...
But little did he know that Sara and Mallory had come home early, heard a woman's moans of sexual ecstasy, and decided to leave Craig alone while he pounded whatever slut was in there with him. Sara and Mallory were actually pretty annoyed that Craig had managed to bring home what sounded like a very sexy partner. When they got back home and snuck in to check on their roommate, they found Craig sleeping alone in his bed...
Mallory noticed the swap stones immediately; she had seen stories about them all over the internet and could hardly believe that she was seeing them here. But she quickly put two and two together and realized that the slutty mistress screaming for more was actually Craig!
"Oh, he thinks he can have all the fun and not share any with us huh? Let's show him how we like to have fun Sara..." The two snuck over and gently slipped the transformation ring around Craig's hand.
"Huh.. wha??!?" Craig gasped as he woke up and quickly realized that he was becoming Kiley. Sara and Mallory's eyes widened as they watched their roommate turn into the big titted slut of their dreams...
"Ugh you guys! Ok, sorry you had to find out like this, but yes, I've been using the swap stones all along. I know you guys are looking for fuckbuddies, and I was going to tell you soon, but I had no idea how to do it and I thought you would be freaked out that..."
Sara sat on the bed and hushed her. "Say no more baby, let's have some fun..", and the two kissed passionately while rubbing each other's tits.
The three roommates sucked, fingered, and kissed their way through the day in a sexual fog that immersed them deeper then they could possibly imagine. Kiley had never felt so good from a sexual encounter, she was loving it! But she couldn't shake the feeling that she had forgotten something...
...
"AaAHHHHHAAAAahhhh fuuuuckkk! Fuck my pussy Sara! Fill me with your big cock... Ooohhhh!"
Kiley and Sara had rushed out of the apartment after some hours of their lesbian threesome to buy a strapon from the local sex shop. Kiley volunteered immediately to have her pussy stuffed first, and spread her legs eagerly to welcome the silicone cock.
It had obviously slipped Kiley's mind by now, as she had cum more times than she could count, and wanted even more, but she had actually forgotten something. In the excitement of finally fulfilling her roommates sexual fantasies, she had forgotten to put on the reverse swap necklace that she had, and Sara and Mallory obviously didn't know how the stones really worked. But that didn't matter right now; Kiley was too busy getting fucked to think straight.
But later, after things had calmed down a little bit, the thought of turning back crossed Kiley's mind. What she and Craig didn't know was this; the reversal necklace was made of data stones. They literally stored the data for 'Craig' in them when he turned into Kiley, and wearing them was the only way to access that data. Because she wasn't wearing her necklace, when she thought of her male form, the only thought Kiley came up with was, 'Craig? Who's Craig?' and was slowly pulled back into Mal's bedroom for another round of hot sex. Her male self was gone from her brain. Actually, it was just across the hall on Craig's nightstand. But how long would it be until Mal and Sara stopped fucking Kiley long enough for her to put it back on? All they could think about at the moment was how long they could stay in and have sex without leaving the apartment...
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Original author unknown Sent to my by Cbrorigins.
Combination of 3 short captions to make a longer story.