Editor's note: this submission contains scenes of incest or incest content.
*
Disclaimer: This story and all characters and events within are a work of fiction. All characters are above the age of 18. All rights reserved.
This story contains unrealistic body types and situations, non consent/reluctance and incest. If you're uncomfortable with any of these subjects, this story isn't for you. You have been warned.
*****
It all started on day the day I caught my sister-in-law cheating.
I was driving back in from the city, it was an 80 mile drive back to my small town with a population of about 20,000. Not long after leaving the city, I was feeling a bit hungry so I decided to eat an early lunch. I spotted a sign that indicated there was a rest area up ahead, I drove down the side road and it turned out to be a nice picnic spot.
It was as good a place as any and I had packed a lunch this morning, It was a tasty but uneventful meal. That is... until I noticed the convertible with its top down, parked a few spots to my right. In the driver seat looked like your typical college jock type, he had his head leaned back with a cocky grin on his face while a college slut was kneeling in the passenger seat with her head bobbing in his lap.
I probably would have had that same dumb look on my face if I was getting sucked off in a convertible as well. She didn't seem to mind and neither did I, so I enjoyed the show.
It's the age of smartphones and seeing such an opportunity arise, I pulled out mine, opened the camera app and started to record. My SUV was taller than the convertible and it gave me quite the view.
I couldn't see her face but I could tell that she was Asian with slightly longer than shoulder length straight black hair. She wasn't skinny and she wasn't fat, She was thick. Her blue and white floral sundress was bunched up around her waist, exposing her tits that I couldn't see and her wide hips that went well with her plump and full ass that I could very much see and appreciate as her head looked like a jack hammer bouncing up and down in his lap.
"Damn... does she not need to breathe?"
I checked the recording time, 1 minute and 32 seconds with out coming up for air, this girl has some lungs on her, the guy let out a moan and pulled her head off his cock and unloading his cum all over her face.
I was surprised when she sat up laughing, her cum glazed face was dripping onto her tits, It was beautiful sight to see. What surprised me was that it wasn't some college slut, the slut in question was my sister-in-law Marlene.
He took out a phone and started recording and she posed for him, topless... covered cum... in a parking lot in the middle of the day for anyone to see... Scooping the cum off of her face and tits into her mouth then sucking his cock clean. she put her dress back in place, sat down, buckled up and then they left the parking lot, I stopped the recording.
Could it really be her, was her self righteous image just a facade? I watched the video and there was no mistaking it, It was her. Marlene, the self righteous prude wasn't who she pretended to be, turns out that she was really just a cum guzzling slut.
As far as I could see it, I had 3 options. Keep her secret, destroy her marriage or take advantage the opportunity that presented itself to me. Letting an opportunity like this slip away just seemed like a waste... I guess there was only one option after all. I only had to wait for the perfect moment to act on it.
~A few weeks later~
I parked in Marlene and Geoff's driveway, It was my niece Kaley's 21st birthday and would be just the 4 of us today, Kaley's sisters wouldn't be able to make it home in time. Kaley had 2 sisters, Brittany the eldest at 24, was at a training course for her new job as a bank teller and would be home in a few days, Candy the youngest at 18, was at her all girls school cheerleading camp and would be back in a week, we planned to have another party when her sisters got back.
Marlene scheduled our small get together for 8 in the morning because Geoff had to leave at noon for a 3 week business trip and Kaley had something planned with her friends in the afternoon. I started walking up the path and was just about to knock on the door when it swung open and I was greeted by a half naked birthday girl, It was normal to see the girls running around in their sleepwear this early in the morning, Kaley always wore something skin tight and a few sizes too small that she probably outgrew years ago.
Marlene hated it of course, but the girls would always argue about it being comfortable and only wearing it at home where nobody could see them. I think she only relented because it was one of the only things where Geoff sided with the girls. He rarely voiced his opinion against her and it was easier to let him have his small victory from time to time. Seeing that Geoff rarely sided with the girls, I think the only reason he did was because he enjoyed the view. I often caught him staring at them and I'm sure Marlene did as well. she probably only allowed it, because she thought it would keep him from straying, but that's just speculation on my part.
Kaley was half Filipina and had caramel colored skin, she was 5'3 with layered black hair that reached the middle of her back, dark brown eyes, B cup breasts, a thin waist with wide hips and a tight rounded well shaped butt that seemed way too big for her tiny frame, her small but cute face paired nicely with her naturally petite body that weighed about 100 lbs., if I had to guess, she would probably weigh 10 lbs less if she had a normal sized ass.
"Uncle Jess! I've been waiting for you to show up all morning."
She hopped up and wrapped her legs around my waist which caught me by surprise. I ended up catching her like I would a lover instead of a niece. I couldn't feel any fabric separating my hands from her ass cheeks and my cock started growing. I tried to focus on other things to keep from having a full on boner pressed against my niece, but I was fighting a losing battle.
That's when the idea came to me, If I let Marlene catch us like this, she would end up giving me another lengthy lecture on appropriate behavior for an uncle to have between his nieces, I've lost count on how many times she had done this already. Lecturing was her favorite pastime, she seemed to enjoy presenting herself as virtuous and superior and I used to believe it. Now that I know it was all a lie, there were going to be some changes in our relationship.
"So, you've been waiting all morning for me huh?"
"Yup, I'm a grown up now, I can drink and everything else!"
"You sure you've grown up? Hmm... I guess some parts of you have grown." I teased her by squeezing her ass a few times to emphasize my meaning and she started blushing.
"Hey! Are you saying that I have a big butt?" Kaley pouted jokingly.
"I don't have to say anything at all Kaley, this says it all." she laughed shyly as I squeezed her ass again.
"Drinking sounds like fun, but I want to hear more about 'everything else', is this what you mean by everything else?" I squeezed her ass a little longer this time emphasizing "this".
"Well, Maybe it does, and maybe it doesn't. You're just gonna have to wait and find out. Why? You got some kind of obsession with my butt? Well, do ya mister?" She said playfully while still blushing.
"Well, Maybe I do, and maybe I don't. You'll just have to wait and find out."
"Well... if you don't like it, you can always let go of my big butt."
"Umm, no thanks. Well, If you don't want your present, I can always return it."
"Nuh uh! Whatchu get me for my burfday?" she used baby talk and bounced up and down in excitement.
I stalled by making small talk with Kaley, hoping that Marlene would catch us in this precarious position.
Kaley's bouncing had her crotch knocking into mine. My cock started to grow even more under the welcomed assault of her bare ass cheeks in my hands and her crotch knocking into mine like a girl scout trying to sell her cookie.
"Kaley! Get off your uncle and let him inside, you're too old to be acting like that especially in public, what did I say about answering the door when you still in your sleepwear."
Marlene showed up less than a minute after Kaley started her bouncing, just long enough for me to be at half mast. I looked over Kaley's shoulder at Marlene and she was wearing the same dress from that day I saw her in the convertible.
Marlene was very controlling when it came to her daughters, even after Brittany and Kaley graduated from the all girls school she sent all of her daughters to. She had them stay at home so she could still keep an eye on them. Marlene wouldn't have it any other way.
Marlene's was stricter than most mothers, even when compared to her own select group of snooty friends. She worked hard to keep her picture perfect image that she lorded over others. Her children were a reflection of her skills as a mother, so they had to appear perfect in every way as well, from their grades to their personal lives, everything was decided by Marlene.
The girls grew up in house full of rules. Early bedtimes, Chores and homework had to be completed before all else. No boyfriends or friends that were boys. No sleepovers, school dances or parties unless they were supervised by Marlene. No movies above a pg13 rating. No cellphones, computers only for educational purposes and the television was locked to pre approved channels, etc... Basically your typical strict and controlling prudish mother, but only more so. It didn't exactly make them very popular to be around and the friends that they did have had to get Marlene's seal of approval, meaning they didn't have many at all.
What surprised me was that even after graduating, the girls still seemed to obey Marlene's rules. They would sometimes try to bend them or find ways around them, but they would never openly break one. Her house Her rules, as she would say.
She always made sure they knew that the rules were her way of keeping them safe and showing how much she loved them. In a way, she was telling the truth, the rules did those things, but they didn't have to be so demanding to accomplish the same goal. They believed it of course, I'm sure they also understood that their mother cared very much about her image, they didn't know any other way to live so they went along with it. They loved their mom and craved her approval in all things, it was ingrained into their very being.
Which seemed to he the complete opposite when it came to their father Geoff. They didn't seem to respect him as much. He usually agreed and went along with everything Marlene wanted so they basically differed to their mother about most things, unless it was something they thought they could get with their fathers help. The girls knew that if they got their father to side with, sometimes Marlene would relent on small things like the sleepwear, they never got her to budge on any of her main rules though.
Geoff ended up being mostly a tool they could use to get their way, it wasn't really their fault that it turned out this way. Geoff always was the quiet introvert type, unless he was drunk, then he became a loud pervy a-hole. Marlene seemed to have put an end to most of his drinking, so he was tolerable. He spent most of his free time locked away in his den playing online games and the girls were forbidden from entering his den by Marlene.
"You're late..." She said in a disapproving tone as she looked from the large bulge on my crotch to my face with an accusing stare.
