The following story is based in truth, although some literary license has been taken.
All persons are 18 or older.
It all started about a year ago. It was a Friday night and my wife and I were sitting in the living room watching a movie – No Way Out with Kevin Costner and Sean Young. Anyone who's seen it will never forget the very steamy limo scene between Costner & Young.
Anyway, my wife and I were watching the movie and as the limo scene was playing out I was getting hard and my wife cuddled in close and began stroking my cock through my jeans.
As you might imagine, one thing led to another and soon my wife was on her knees in front of me sucking me like the cock-sucking champ she is. Bathing my cock with her wet mouth... slow strokes on the underside with her tongue... licking and sucking on my balls... I knew she was hungry for my cum and she knew exactly how to milk me dry with her mouth while she fingered herself.
As I was enjoying this incredible blowjob, I thought I detected movement out of the corner of my eye, over my right shoulder.
My oldest stepdaughter, now a senior in high school, lived in a basement bedroom that had its own full bath. It was an awesome bachelorette pad, complete with a 'family room' area that included a wall mounted plasma tv and surround sound stereo. To get to the basement stairs, you had to walk from the living room through an arched opening into the kitchen and across the kitchen to a door leading to the stairs down into the basement.
It was movement at the arched opening that caught my attention and as my wife continued to suck my cock I turned my head to see what drew my attention. As I turned my head I thought I saw someone duck behind the wall to the right of the opening. I realized it must be my stepdaughter and that she must've come upstairs to get something from the kitchen and heard the noises coming from the living room and when she saw what was happening, was peeping around the edge of the door watching her mother give me a world class blow job.
My first thought was, "What the fuck?!," but it was quickly replaced by a surge of hardness to my cock that even my wife noticed as I heard and felt her moan in response to my twitching cock in her mouth.
Perhaps now would be a good time to describe my stepdaughter. Ashley stands a petite 5'-3" and has the most incredibly perky 34C tits I've ever seen. Yes, I've seen them. She also has a set of hips and an ass that gets her noticed by men of all ages. All of this mounted atop a very, very nice set of legs – no doubt from all the exercise from being a cheerleader for all 4 of her high school years.
How have I seen her tits, you ask? Well, most nights, my routine at the end of the day is to walk the house, checking to make sure all doors are locked and everyone is tucked in safely before retiring to the master bedroom and joining my wife in bed.
During these security walkabouts, I would open the bedroom doors of my two stepdaughters and check to make sure they were tucked in. Often I would walk in and pull the covers up over them if they had kicked them off. When Ashley moved to the basement for her senior year of high school, I would check on her after checking the basement door, before moving on to the main level of the house.
On one particular night, I saw that Ashley had kicked the covers down to the foot of her bed so I stepped into her room to pull them up over her. As I got close to her bed I froze in my tracks as I realized she was lying naked, legs askew and breathing heavily, but apparently asleep.
I cautiously stepped closer, staring intently at her face for any sign that she was awake or might wake up, but she didn't move. I could feel my cock stirring at the sight of this beautiful, exposed young woman in front of me. The light coming through the open door illuminating her body and giving me an excellent view of her figure.
As I stepped closer I detected a familiar aroma in the air and my senses exploded in activity as my eyes saw first, the purple vibrator laying next to her right hip, then the familiar swollen lips of a recently excited pussy; followed by my nose inhaling a scent that I recognized as the smell of a woman's sex.
Holy shit! I realized that Ashley had masturbated herself to orgasm and had apparently fallen asleep, aglow in the aftermath of her pleasure, without pulling the covers up over her delicious body.
I recalled a conversation her mother and I'd had a few months prior, during which she told me that Ashley had come to her with some serious questions about her body and what she was feeling and after a detailed conversation between mother and daughter, my wife had shown Ashley her vibrator and explained how it worked and how she used it. By the end of the conversation, mother and daughter were on their way to the local adult store so Ashley could pick out her own vibrator.
I also remember the raging hard-on I had by the end of my wife's story and her commenting after we had fucked each other silly that night, that I seemed particularly fired up.
After some tedious exploratory questions, we both accepted the fact that it turned both of us on that 'our' daughter was becoming a young sexual woman. Thankfully, my wife and I have a very open and honest relationship!