Mandy and Lauren Transformed
by Lion24655
Copyright© 2025 by Lion24655
Erotica Sex Story: A woman discovers her daughter’s diary detailing her sexual fantasies, and so the erotica begins...
Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa Mult Reluctant BiSexual Incest Mother Daughter Group Sex First Masturbation Oral Sex Petting Big Breasts Small Breasts .
Mandy was a good friend of ours. She was in her mid-30s and had a daughter— Lauren, approaching 18. Mandy was very protective of her daughter since her husband, Jeff, had left, and perhaps saw us as parent figures as her own parents were many miles away. Mandy was sweet and quiet, and was one of these people who had a sensational body without being aware of it. When she was younger, she had been rather plain, but now into her thirties, her body had developed a sensational shape which she, totally unaware, showed off nicely in the dresses she wore. She would call regularly for support, for advice, and simply for the company and friendship which Judy, my wife, and I were more than willing to give.
Mandy was most worried about Lauren, although we knew Lauren was a good kid— she just had typical teenage problems. It was about 2 months before Lauren’s birthday that she approached us with a particular problem.
“It was like this...” she was saying. “I was cleaning in Lauren’s wardrobe when I saw these two books. One was just a teen story, but the other was her diary.” Mandy paused for a moment.
“I know I shouldn’t have, but I took her diary out and began to read it. It was awful. I know she was only describing fantasies and all sorts of celebrities, but I was amazed at the details she was describing. Amazed at what she described herself doing.” Mandy paused, looking slightly embarrassed. We both sensed that this may be the beginning of a new phase in our relationship with Mandy, but that would perhaps be a bit down the line. It was Judy who took it up.
“What do you mean, Mandy?”
Mandy looked at me a bit embarrassed but plunged in. “Well, she describes sex and things like that.”
“Things like that?”
“Well,” Mandy continued hesitantly. “Oral sex. Sex with three members of that band she likes so much— at the same time.”
Judy replied: “That’s just natural, it doesn’t mean she will do anything.”
“I hope you’re right,” Mandy replied. Then the conversation quickly moved on and away from the subject, with Mandy promising never to reveal to Lauren what she had seen in her diary.
It was after Mandy had gone that Judy and I talked. We both knew, then, that we wanted Mandy— the way she had talked made her arousing— that mix of vulnerable and innocent, despite being married in the past. “But we might get more,” I started, and as Judy paused, I continued, “play this right and we might get both of them loving it...” We talked into the evening discussing our plans...
Three days later, Mandy was around our house again. It was Judy who introduced the topic.
“So have you relaxed about Lauren and that diary?”
Mandy shrugged her shoulders.
“No,” said Judy. “I’ve been thinking about it. When I was that age, I used to imagine a cock sliding in and out of my pussy. I used to imagine taking a cock in my mouth and wonder what the cum would taste like. And I remember I used to play with myself and make myself cum with the thoughts. And of course, the great thing is I did all those things when I got a bit older— and I know now there is nothing better than feeling that cock sliding in and out. And I love sucking a man’s cock. I love the taste of cum— of his cum...” she pointed at me as she said it.
I continued. “And she is so good at it, and I can’t think of anywhere else I would like to cum but deep in her pussy.” Mandy looked shocked and dumbstruck. Judy took up the conversation.
“You must have experienced those things— I know you have had a cock inside you many times. You have sucked a cock, haven’t you?”
Mandy was very quiet before she replied. “Yes, but only once.”
It was Judy who continued the subject. “And I’m sure Lauren will be having sex and sucking cocks in the future. Just like you have.”
Mandy was still shocked, silent. It was me who continued. “And you will again— and if I wasn’t married, I would be first in the queue for you...”
“Bill!” Judy cut me short. “You shouldn’t say that. Let’s change the subject.” We changed the subject, and twenty minutes later, Mandy left.
Judy summed up: “I think she’ll be back.”
She did come back, and somehow over the next couple of weeks, the subject of sex came up in every conversation, and Judy and I talked as explicitly and openly as we could. And each time Judy would say something like “If I were a man, I would want you”, or I would say “If it weren’t for Judy, I would have you in my bed.” It was clear that the conversations were getting Mandy very agitated.
It was two weeks later that Mandy called when Judy was out. We talked in a stilted way for several minutes before Mandy blurted out “Bill, please - will you take me?”
I looked shocked. “No, I couldn’t possibly...” Mandy’s embarrassment was acute, and she quickly left. I told Judy what had happened later.
Mandy kept coming around. We kept talking about sex. Twice more she asked if I would take her - once on the phone, once by email. Both times I gently said no. It was clear that Mandy was getting more and more desperate.
On one evening, we were together. Judy talked at great length about an experience she had had with another of our friends - Linda, and about how women give pleasure to each other. Again, Mandy became very embarrassed as Judy talked, but it was also clear from her squirming that she found even that image arousing.
It was the day after Lauren’s 18th birthday that Mandy came around again, chatting. It was Judy who this time brought the subject up. “Mandy,” she said in her ‘strong’ voice. “Three times now you have asked Bill to have sex with you.” Judy paused, Mandy turning bright red in embarrassment. Judy continued. “I have made a decision. Bill can have sex with you.”
Mandy looked both surprised and pleased, but Judy had more to say. She continued in her strong voice. “And I will also have sex with you - you can serve us, both, and we will give you the best sex you have ever experienced.” At the thought of making love to both me and Judy, Mandy’s breath was already coming slightly harsher. Judy hadn’t finished. “We will have sex with you on one condition. That you agree that we can also have sex with Lauren.”
Mandy gasped. “No, please not that.” Her agony was clear - desperately aroused for herself, yet horrified to think that we should have Lauren.
Judy allowed her a few moments’ thought, then continued. “Today is Wednesday. On Friday, we are going to a cabin in the hills. We would love you and Lauren to come with us - there’s plenty of space in our car and in the cabin. But you must know - if Lauren comes with you, we will seduce her. And you. It will be a very hot weekend. But...” Judy paused before continuing gently. “It has to be both of you, or neither of you.”
Mandy was silent in her agitation for a moment. “No, I can’t do that...”
Judy raised her hand. “Mandy, if you say no, we will still stay friends and not talk about this again. We will also give you time to think about it. We leave at seven on Friday. You can phone us any time before then and say you are coming. If you don’t, we will simply go and have a great weekend ourselves.”
For a few seconds, the atmosphere was electric, but again it was Judy who broke it. “Mandy - it’s time you were going home to get Lauren’s tea.” Judy’s voice was full of affection, as she reached out and pulled Mandy to her feet. She gave Mandy a great hug, and I could hear her whisper in her ear, “We would love you to come.” Seconds later, Mandy had disappeared. Judy shrugged her shoulders. “We wait and see.”
The next couple of days were busy, and there was no phone call. We began packing the car late on Friday afternoon, now having given up hope. But our busyness was suddenly shattered - 6:50 p.m.; ten to seven. The phone rang. I answered it.
The voice on the other end spoke very quickly, quietly, and nervously. “We will be there in five minutes. Please don’t go without us. But I couldn’t tell Lauren anything that was going to happen. Please be gentle with her.” For a moment, I assured Mandy that whatever we did, both she and Lauren would enjoy more than anything before. I urged her to get ready quickly, and she put the phone down.
Five minutes later, there was a ring on the doorbell. Stood at the door was a very nervous Mandy and a nervous and excited Lauren.
Lauren was still very slim, even small for her age, although she would fill out and become very shapely. She had long blonde hair, a pretty face, and was wearing jeans and a T-shirt. We knew Lauren a bit and knew she was a sweet, chatty teenager, but with none of the big-headedness of some teens. We had always gotten on well with her, but this was the first time either of them had been away with us. Lauren always called us Uncle Bill and Auntie Judy - somehow it had just happened.
We quickly loaded their luggage in the car, locked the house, and decided who should sit where. It was agreed that I should drive, that Mandy and Judy sit in the back “for womanly chat”, that Lauren sit in the front with me. We set off on the two-hour journey chatting away, all four of us, but sometimes Judy and Mandy together, and Lauren and I together. Lauren chatted freely about school, pets, and boys. The atmosphere lightened as Mandy and Lauren overcame their nerves.
It was autumn, and as we drove, the light came in on us, and we needed the headlights on - it became quite dark just after eight. As the darkness came in, so the conversation quieted as well, particularly in the back - Lauren and I were talking about her dreams for jobs in the future.
It was after about five minutes that I looked in the mirror and saw in the corner that Judy had her mouth covering Mandy’s, that they were in a very strong embrace, kissing more than just friends would. It was clear that their tongues were playing in each other’s mouths. I continued to drive, looking every minute or so in the mirror, which I had adjusted slightly, and perhaps five minutes later saw Judy’s hand cupping Mandy’s breast, and Mandy seeming to enjoy and respond to what was happening.
I turned to Lauren and spoke in a casual throwaway voice. “Have you seen what those two are up to in the back?”
Lauren turned, and was rigid in shock at what her mother was doing. She couldn’t take her eyes away as Mandy and Judy kissed, Judy exploring Mandy’s body with her hands, Mandy responding to every new touch. Again, after a few minutes, I spoke to Lauren. “Hey, Lauren, you don’t get many free shows like that one, do you?” Lauren was still completely silent, transfixed by what was happening in the back. Again, I spoke to her. “Your mum seems to be really enjoying it - it’s great that she’s enjoying something so much. Why don’t you relax and just watch her having a good time?”
“But it’s not right, what she’s doing,” she whispered.
I put on my positive tone. “Hey, kid, your mum has had a really bad time since she’s been on her own. It’s been really hard for her. Isn’t it wonderful for her to have something happen to her that she really enjoys? And I think she would enjoy it even more if she knew you were sharing in what she’s doing.” Lauren’s mind was clearly racing, but she relaxed slightly, and she did begin to watch. She even began to enjoy her mother’s enjoyment.
Actually, it was a rather strange car journey for the next forty-five minutes before we arrived at the cottage. Two women in the back were kissing and petting each other heavily. The passenger was half-turned, watching everything. And there was no conversation at all! Still, I had to drive, and we reached the cottage safely just after nine. It only took five minutes to get a kettle boiled, to drink tea and coffee. Although after the antics in the car, the conversation was rather stilted, with Mandy embarrassed, Lauren silent, myself and Judy chatting away. It was Judy who suggested we dance, turning on some soft music.
Judy and I danced, arms around each other’s necks. Mandy and Lauren danced, barely touching each other. After 10 minutes, I suggested we swapped - Judy danced with Mandy, and I danced with Lauren. It was clear that Judy and Mandy had unfinished business and were soon entwined around each other, kissing hard. Judy pulled Mandy hard to her with her hands on her ass, and it was clear that Mandy was rubbing herself on Judy’s thigh.
Lauren and I danced arm in arm, but then I put my arms around her, pulled her closer to me. I put my arms around my neck, and put my arms around her back as we danced against each other. As we danced, I ran my hands all over her back softly, each time encroaching a little more onto her sweet and cute ass. At last, I simply cupped her ass as we danced together, pulling her hard against me. I was certain she could feel me hard against her, but she showed no signs at the moment.
At last, the music ran out, so I pulled Lauren onto my lap as I sat on the settee, and suggested to the other two that they get undressed and finish what they started. At first, Mandy was reluctant, glancing at Lauren, but as Lauren didn’t move, she allowed Judy to undress her completely, and allowed Judy to lay her on the floor.
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