My twin sister and I were in the Attic looking through old boxes when we came across an odd looking stone. It was blue with purple veins running through. I picked it up and a strange vibration of occurred.
“Woah sis! It just vibrated!” I handed her the stone and she dropped it when it also vibrates for her.
“We better put it back, Mark! I don’t like the way it felt!”
“Yeah, definitely!”
We put it back where we found it and went downstairs. Nothing seemed Out of the ordinary that evening and we all went to bed.
In the morning I woke up and as soon as my eyes adjusted I found myself in my sisters room. How did I get here? I wondered. And why is sis not here? I felt different as if my body had changed. I started to get out of bed and as the sheet slipped down, it caught on two nice sized breasts! I looked down in horror at my once virile chest which now had a pair of 34DD tits! I was in shock as I continued to pull the sheet away. When it fell away from my hips I saw a pussy where my cock should be! Oh my god! I thought. The rock! It must have some kind of spell. I looked in the mirror and there was my sister looking back at me. I now have a smoking hot body and long blond hair! I threw on a robe and ran to my room. Jen was just waking up and gasped as she saw herself walk in the room.
“Mark! What the fuck!!”
“Yeah, what the fuck is right! We switched bodies!”
“How the hell is that possible?!!”
“I think it’s the rock! It must be!”
” Well fuck! We have to o back up there now!”
We hurried up to the attic only to find the rock gone. We frantically searched but it wasn’t there.
“Now what do we do?” Jen asked.
” I guess we have to try and act like we normally would and keep looking for that damned rock. I can’t stay a girl forever!”
“And I sure as fuck don’t want to be a boy!” Jen stated.
We went down to our rooms, almost going in the wrong room before realizing. It felt really strange as I pulled the robe off and couldn’t resist looking in the mirror again. Damn! My sister is fucking hot! Just then Jen came in.
“Hey Mark! Quit ogling my body!”
“Sorry sis, but I can’t get over that I’m you! You’re beautiful you know?”
“Yes I know but it still creeps me out that you have my body!”
I put on panties, a bra, and jeans and a tee. We went down to breakfast and tried to act like we should in our new bodies.
It was Saturday and mom asked me what my plans were. I told her I was going to meet up with the guys on the football team. Jen glared at me and mom said, “what did you say?”
I recovered nicely. “Just kidding mom! I’m meeting with Bobbie to head to the mall and hang out.”
“Well that wasn’t funny! Sometimes I wonder about your sense of humor!”
Jen said she actually was going to practice.
We talked after eating and decided we would not see friends yet until we were more comfortable. We talked awhile to get used to our new reality. Then I did go to a mall but one where no one knew Jen. As I walked thinking what to do I couldn’t help notice the guys staring at me. It was weird but also exciting. I decided to visit the ladies room and inspect my pussy up close. I could have waited til I got home but I was getting horny from all the attention and I had to relieve myself. I was very curious about how an orgasm will feel as a woman. I found the nearest ladies room and quickly entered a stall and locked the door. I pulled my pants and panties down and sat on the seat with my legs spread. I then looked between them at my pussy. It made me shiver in delight as I saw the outer lips open as I spread my legs further apart. They revealed inner lips and a nub at the top that I knew was my clit. I wet my finger with spit and rubbed the clit. Oh god! I moaned as the almost electric shock caused me to jerk my hips in response! Luckily, there wasn’t anyone in the room! I continued to rub my clit and the feelings got more and more intense. I took my other hand and inserted a finger into my cunt. I tilted my hips instinctively as my finger sank all the way to the knuckle! I was moaning loudly now as I could feel my orgasm approaching. I bit my lip to keep from screaming as a powerful orgasm overwhelmed me. I was jerking back and forth on the seat as I jammed two fingers in my cunt and rapidly stroked my clit. My orgasm finally ebbed to the point I could breathe again. I calmed myself enough to clean my cunt of the cream that matted my pubic hair and get my clothes back on. I left the room and quickly left the mall and drove home. I was thinking on the way home that I really needed to get fucked but I loved my sister too much to just fuck some stranger. I needed to talk to her. As twins we always discussed everything and I couldn’t proceed without her approval.
I got home and sis was in her/my room. I asked if we could talk and she nodded. It was very strange looking at me basically and knowing it was my sister’s mind!
“I want to ask you a few questions about being a woman. I was at the mall and guys were ogling me.”
“Yeah, that happens.” She replied.
“Well, it got me very hot and I went to the ladies and masturbated until I came.”
“Oh wow! How did you like it?”
“Oh my god! It was so much more intense than a male cum! Uh, have you tried to masturbate yet?”
“No, but I have the urge to! I should be upset that you did that but hey! I do it all the time so I understand.”
“Okay, so I have to ask…”
“You want to know if I’m a Virgin, right?”
“Yeah.”
“No, I’m not a virgin. Why? Are you planning on fucking someone already?”
“No, but I am curious how it will feel. But I don’t want to ruin your reputation. I would never do that to you!”
“I know, Mark, hopefully we’ll figure out how to switch back soon.”
“But if we don’t, I have a wild idea.”
“I have a feeling I know what you’re going to say.”
“Oh yeah? What am I going to say?”
“That we can do it with each other. And my honest answer is that I don’t know! I think it would be weird but at the same time the thought excites me!”
“Yeah, I feel the same. And right now, I am getting wet down there just thinking about doing it with you!”
“Well I don’t think we’re ready for that yet but my cock, damn it’s weird to say that! Anyway my cock is getting hard! Oh god! It feels good!!!”
“Do ya want to masturbate together?”
“Yeah, let’s do it! I’m hot as fuck!!”
“There’s lube in the bedside table.” I told Jen.
She reached in and got the tube and squirted some on her hand then tossed it to me.
“This pussy is already wet as fuck!” I said.
“Yeah but it feels better with lube!”
I squirted some on my cunt and started rubbing it all over.
“Damn sis! That feels so fucking good!”
She rubbed the lube on her cock and started stroking, “oh god yes!! I know! And this feels amazing!”
“Just wait til you shoot off!”
I watched her stroking my cock, very weird but hot as I was rubbing her cunt. I guess I’ll have to stop thinking it’s my cock if we don’t find that rock!
We masturbated for a few minutes and because the feelings were new to our minds, we were ready to cum.
“Oh god Mark! I think I’m going to do it!” She moaned.
“Aaahhhhhhh god! ! I’m doing it!!! Oh shit! It’s shooting all over!!”
The cum was jetting out of Jen’s cock and landing on her stomach and chest. She squirted around 5 times and then it dribbled out. She scooped some up and licked it up.
“Sorry Mark, but I love the taste of cum!”
That was it for me!!
“Ohhhhhhhhhhh!!! Jennnnnnyyyyy!! Cumming!! Oh god!!”
I jerked my hips and quivered all over as I experienced my second female orgasm. It was every bit as intense as the first and when it subsided, we were both exhausted from the effort.
“Oh Mark! That was unbelievable! We should have been doing this before!”
“Yeah sis! And I love having orgasms as a girl!”
“Well, don’t get too used to them! I still want my body back!”
“Me too, but just saying.”
The rest of the day we searched in vain for the rock. We were getting pretty frantic by the end of the day.
“Oh god Mark! What if we can’t find it?!.?”
“I guess we’ll have to learn to live in our bodies.”
“Speaking of which, you need to take YOUR birth control pills every day! Just in case.”
“Oh yeah! Good idea.”
“Their in my top dresser drawer. Just make sure you don’t forget. I’ll try to remind you.”
I went t my new room and got a pill and took it. The next morning I took another and hopefully will remember to continue.
Sis and I masturbated together every couple days for the next two weeks. It was getting easier to live in her body and her friends just thought I/she was being a bit ditzy if I didn’t remember things and the same with Jen. I had gotten used to calling her Mark in public and we had decided to call each other by our names that matched our bodies all the time to avoid mistakes. The Sunday starting the third week we were watching TV I the afternoon. Our parents were golfing so they would be gone most of the day. We hadn’t masturbated together for a few days but I had an urge.
“Mark, do you want to touch each other today?”
“Oh god Jen! I wanted to ask you that too! Yes!! Yes!!”
We got out of our clothes and slid close together on the sofa. I reached down and took his ‘damn’ I thought, ‘now I’m thinking like a girl!’.
I started stroking his cock and the Mark reached down and rubbed my pussy. It only took a minute until I pushed him on his back.
“Damn it Mark! I’m going to fuck you! I can’t stand this anymore!”
“Oh god yes!!! Fuck me brother!! Fuck me!!”
She reverted to calling me brother but I didn’t pay attention as I was jamming my pussy down on his cock! I hit bottom and I squealed as the sensations of being filled with cock overwhelmed me!
“Oh god! It’s so fucking good!! Fuck me!”
He fucked me with powerful strokes and was grunting as we jammed our sex together. Not being used to fucking from the male perspective, he started spewing after a minute! I felt his cock bulge and a warm feeling. I started to orgasm and I got really dizzy in the head and all of a sudden I was looking up at Jen with my cock still spewing cum into her. Jen’s eyes got big as she realized she was in her own body but we didn’t stop fucking until we both came down from outer orgasms.
“Oh my god Mark! We did it! We’re back in our own bodies!!”
“Yes! Finally!!”
We looked at each other and suddenly started kissing passionately! I regained my erection and we started fuckin again, this time lasting much longer!
“Oh Mark! My brother! My lover!!”
“Oh yes Jen! I love you so much! I love making love to you!!”
I was close to cumming, this time as myself.
“I’m gonna cum Jen! Oh god! In your pussy!!”
“My cunt! Cum in my Cunt!!!”
I came what seemed like gallons into her until there was nothing left. We stayed in each other’s arms for a long time.
“Oh Mark! I’m so happy we’re back in our bodies! But I want to keep fucking with you forever!”
We never did find that rock! Maybe it appeared to another brother and sister?
Part 2
The rock didn’t appear to a brother and sister but the next time to a mom and son.
June and her son Ken were in their back yard pulling weeds in the garden and cleaning up the yard. Ken saw a strange looking rock and picked it up. He got a strange vibration running up his arm and dropped it.
“Hey mom! There’s a strange rock over here!”
She came over and he pointed to it. “It vibrates or something!”
“You are probably just tired from working. Let me try it!”
She picked it up and got the same vibration and dropped it.
“You’re right! We better leave it alone.”
They finished in the yard and the next morning, June woke to find herself in Ken’s room. She had no recollection of coming in here and Ken was not in the bed. She had a strange feeling and when she sat up, she realized in horror That she had no breasts and a large cocktail that was currently very hard and standing erect!
Oh my god! She thought. I’m in my sons body! She rushed to her room and Looked at her in her bed looking shocked.
“Oh god Ken! What the hell?”
“I don’t know mom but it’s fucking freaking me out! I’m in your body and you’re in mine!”
“We’ve got to find that rock now!!”
They ran out to the yard and searched everywhere but the rock was gone!
“Now what do we do?” June asked frantically.
“I don’t know mom! I don’t know!”
“Okay, okay, we’ve got to make a plan. You can’t go to my work right now and I can’t go to your school. Not until we figure this out. I’ll call in for an emergency leave of absence and I will pull you out of school for home schooling for now. That will give us time to figure this out.”
Ken agreed and they returned to the house. They still had their night clothes on.
They went to June’s room and Ken, in June’s body, started to undress.
“You can’t see my body naked Ken!”
“What the hell am I supposed to do mom? Close my eyes when I’m naked?”
“Okay, you have a point, but don’t dwell too long on it, okay?”
“Well I could say the same for you mom!”
She laughed, “you’re right, we’ll just have to go with it!”
June left the room to change, not wanting to see her own naked body with her son’s mind in it.
Ken untied the robe he had on and pulled the nightie over his head. He looked in the mirror and saw his mom naked for the first time! But he was in her body! Too weird! She had nice big breasts that sagged just a bit and a fairly flat stomach, just a hint of fat. Her pubes were trimmed to a neat triangle above her pussy. Then Ken looked at her pussy. He spread his legs to see better. Her outer labia were big and flabby but very erotic. Ken pulled them open to reveal inner lips and a prominent clit. He touched it and jumped at the sensation.
His mom called in his voice,
“You’re taking a little too long in there Ken! Let’s get moving!”
Ken dressed quickly and met his mom, now in his body in the kitchen.
His mom said, “oh shit! Shit! Shit! I forgot I have a. Date with John tonight. You can’t go on the date!”
“Yeah, that would be a problem! He might want to take advantage of you then what would I do?”
“Not funny! You have to call and cancel! Say we both came down with something and no he can’t come over! He might catch it!”
Ken decided to tease his mom a bit more, “so what would I find out about you if I did go out with him?”
“Very funny. Things no son needs to know about his mom, okay?”
“Just kidding mom, I understand. I’ll call.”
Ken used his moms phone of course, which was now his. Oops, he realized mom would use his with all the incest porn on it. Uh oh!
He made the call and John said he’d take a rain check.
Then Ken said, “uh, mom? About the cell phone? Can I erase some stuff that might be embarrassing if you saw it?”
“What would embarrass me?”
“Uh, if you must know, I have some porn on it.”
“You’re a teenage boy! Of course you do!”
“Yeah but it’s not something I want you to know I look at!”
“Well in your body or not, I’m your mom! I want to know what has you so worried.”
She went to his, now her room and looked up the bookmarks on the phone. They were mostly mom son incest stories and videos! She started reading one and to her shock her cock started getting erect! Oh shit! She was getting excited by mom son incest! She should have put the phone down right then but she didn’t. She kept reading and could resist grabbing the cock on her body and rubbing. God! She thought, this feels good! She pulled it out, marveling at the length and width of her son’s cock. She wrapped her hand around it and it was strange after all these years of giving handjobs was now giving herself one! She felt the sensations also ng her cock and sped up until she suddenly clenched her leg muscles and the cum squirted out of the cock! Oh god! She thought, this is too much! She squirted all over her chest and then it dribbled out over her hand. She brought her hand to her mouth and licked the cum off, suddenly realizing it was her son’s cum!
She straightened herself up and returned to the living room.
“I’m not surprised t what you were looking at or mad. I know boys lust after their moms, okay?”
Ken shrugged his mature shoulders. It was definitely strange to see a mother act like the child and the teen act like a mother.
“Okay, so we need a plan of action! We can’t find the rock and probably won’t so we should go on the dark web and search for a magic rock. Maybe it will tell us how to reverse the spell.”
They went to the office and June got on a Tor browser and searched. To her surprise she found stories of people finding the rock and switching bodies. As they read they were both shocked when they got to the part that explained the only way to reverse it.
“The man has to ejaculate inside the woman. The spell will be immediately reversed when the cum enters her womb! You cannot use a condom or it won’t work!”
They looked at each other, stunned.
“Oh my god Ken! Do you think this is true? We have to fuck to reverse it?”
“There are several accounts of this working so, yeah, I think it is!”
“Can we do it though? I mean, we would be committing incest!”
“We don’t have a real choice unless we want to stay the way we are.”
“I know you’re right, but it will be hard to do!”
“Let’s just do it now, mom! Just get it over with and we won’t talk about it again.”
“Okay, we’ll do it on the sofa, right here! I don’t want to do it in bed.”
They agreed and took their clothes off. The newness of seeing their naked bodies had passed but they both got sexually excited looking at each other!
Ken, in his mom’s body laid on the sofa and June, in Ken’s body got on top. She spit on her hand and lubed her cock, then closing her eyes, put it in her own body! It felt like nothing she had ever dreamed as her now cock sank into the pussy that once belonged to her. She started fucking and it was so erotic and taboo that it only took a few minutes and she opened her eyes and kissed her son, now in her body! She felt the sperm rise and threw her head back and let it spurt into her womb.
“Oh my fucking god!” She cried and then a dizzy spell and she was on her back with her son spewing cum into her cunt! She grabbed I’m by the ass and pulled him deeper as she wailed, “oh god yes!!! I love your cock!! Fuck me! Fuck mommie! Fill me with cum!”
She was so caught up in her orgasm she couldn’t react to being back in her body until she recovered.
“Oh Ken! I’m so happy to be back we’re we belong! In our own bodies!” Like the twins before, they couldn’t stop fuckin* and seemed to have unlimited stamina as they continued fucking and Ken came in her again!
They continued their incest relationship, much to Ken’s delight. June broke up with her boyfriend and only slept with Ken after that.
The rock seemed to only appear to male/females who were biologically related. I’ll relate more of the encounters in the near future!