First, some back-story.
My name is Dave. As I described in the previous stories in this series, my wife (Sherri) and I have two college-aged twin girls (Amy and Becky), both living at home while attending the local university. We discovered shortly after their high school graduation that they were engaged in an incestuous sexual relationship which we first ignored then, eventually, openly condoned. By the time they started college, they were sleeping in the same bed and conducting their affair without needing to hide it from us.
In the spring of their freshman year, they invited my wife to join them, which she did anxiously. That relationship was quickly normalized and they comfortably settled into a long-term throuple-like sexual relationship which continues to this day, now the summer between their junior and senior years.
In the middle of their junior year, at her request, I began a sexual relationship with Becky. While Amy is gay, Becky is bisexual; I was honored to be able to help her better understand that aspect of herself. Since then, Becky sleeps in my bed once a week, either Friday or Saturday, depending on our schedules. On those evenings, Sherri sleeps with Amy. With two bedrooms so relatively close together and three women who are very orgasmic and vocal, it can sometimes get a little loud at night! It's a good thing we have space between houses in our neighborhood.
During the day, it's an ad-hoc free-for-all; sometimes the girls have a threesome, more often a twosome while one of the three is busy doing other things. Becky and I tend to limit ourselves to our once-a-week sleepovers though there have been a few exceptions when we've had the house to ourselves, always just quickies. We very much prefer to take our time with each other.
For example, she told me one day that Amy and she had caught Sherri and me having sex, her flopped over the back of my living room leather chair, me pounding her from behind. I remember that day. That was the day the twins had first included Sherri and they had spun her up to a state of passion I'd not seen before and haven't seen since. Becky thought it would be fun to recreate the scene and we did but, honestly, we both thought it felt a little flat. It wasn't us and Becky wasn't starting out at a place of utter sexual desperation.
Anyway. To the present. It's been about four months since Becky and I started fucking. We've done everything that a man and a woman can to, for, or with each other. Well! Not "everything", of course, but you know what I mean. Manual, cunnilingus, fellatio, intercourse (both vaginal and anal), prostate play She's pegged me three or four times, now; it's not something I never imagined I'd like as much as I do. But until this evening, we'd always done it alone -- just her and I.
It was Becky's night, close to bedtime, when Amy called to say that she was spending the night at her new girlfriend's apartment. Part of our deal -- Sherri's and mine -- was that Sherri wouldn't ever have to sleep alone. It's one thing to kick your wife out of bed so she can go to a different lover but I didn't want to banish her from her own bed so that mine could come to me. So, I asked Becky if we could change things up.
"Amy's away for the night so Mom's going to join us. Okay?"
Her face lit up! She squealed in delight and gave me a big hug. "I was hoping she would someday! She's a lot of fun, you know!"
Bedtime came and, showers taken, we converged on the bedroom, all naked, all already aroused. I'd never had a threesome and had no idea what to do or even expect but I needn't have worried. I was in the company of experienced pros.
Sherri didn't hesitate. She gave Becky a passionate kiss, then pushed her down on the bed. Becky scooted back a bit and her mother crawled between her legs, on all fours, ass in the air at the edge of the bed, and buried her face in her daughters pussy. I almost came on the spot; I'd never seen anything more arousing than the look of total desire on Becky's face. Sherri stopped her work for just a few seconds to speak to me.
"Don't just stand there, sweetheart! Eat me!"
I was on my knees in a flash but I was too low, so I grabbed some throw pillows and knelt on them. My wife's pussy had changed in the past year. I used to be a bit unkempt but, now, she was nicely groomed and when her labia were pouted as they were now you could see everything from the hood of her clit to her vagina to her anus, all splayed out. And though we'd only just started, she was soaked.
I'd never eaten her from behind like this -- she'd always been on her back -- so it was a bit awkward and disorienting at first. Up was down and I had no interest in anilingus but, after a few seconds I got my bearings and attacked her clit with my tongue. Sherri likes it "light and fluffy" at first so I began fluttering my tongue over the tip of her clit. I heard her moan, then I heard Becky moan louder. My daughter loves, loves, loves being eaten and her mother was obviously giving her what she needed.
Within a minute, I felt the bed starting to shake and the primal grunts were a sure sign the Becky was about to orgasm. The screams that followed let me know that she was cumming hard. The juices started to pour out of my wife's cunt; the knowledge of what she was giving to her daughter must have been driving her crazy. I doubled down, knowing from past experience that Sherri would cum any second.
But it didn't. I increased the pressure and moved my tongue closer to her hole, a trick that almost always worked, but still no. Becky was thrashing, screaming crying in a series of explosive orgasms but my wife was not cumming.
