Author's Note

Welcome, to another interesting story. This one will be shorter than most at only three chapters. Hope you enjoy it and let me know what you think in the comments.

Discovery

It was a chilly November afternoon in the City of Canterlot and currently, eighteen year old Flurry Heart was walking down the street after getting out of school.

She was dressed in her Crystal Prep uniform, with a coat on over it to keep her warm in the cold air. She was a girl of average height, with a trim stomach and shapely legs. Her hair was up in a ponytail, which flowed down to her lower back.

The young woman had just gotten out of school and was heading home, as her after school activities had been cancelled that day due to complications. As such, Flurry would be getting home early and would likely get to spend time with her mother.

Principal Cadance had taken the day off from work, having had some serious cramps that morning. Something Flurry could relate too. She envied her mother, who could take time off from work whenever she wanted. She didn't, but Flurry wished she had that option with school.

As Flurry walked down the street, she thought about what she and her mother might do before the rest of the family would get home. Her father was going to be working late, whilst Flurry's little brother and younger sister would still be enjoying their after school clubs for another hour or so. If her mother wasn't feeling any better, she would likely still be in bed. But if she was, they would probably just talk and enjoy one another's company.

She and her mother had always been really close. Their entire family was close.

As she reached her street, she spotted her house and noticed a familiar black sports car on the driveway. And she knew that meant only one thing. "Uncle Flash!" She broke out into a run, a smile on her lips as she thought about one of her favourite people.

She had known her uncle Flash for as long as she could remember. He had started dating Flurry's aunt when she was still young. On several occasions, he had babysat her whenever her parents, aunt and grandparents couldn't do it. Flurry had even been the flower girl at their wedding.

She hoped her aunt was there, as she hadn't seen her in weeks due to a project she was working on. But if it was just her uncle, she would be more than happy.

She reached the house and ran inside, throwing the door open but being sure not to slam it since her mother hated that. She ran into the living room, but Flash nor her mother was there. She looked in the kitchen and they weren't there either. She even checked the backyard, but there was no sign of them.

She was about to call out to them, but stopped when she suddenly heard some kind of banging coming from upstairs.

She raised an eyebrow and headed for the stairs, as more sounds came from above. And as she headed up, she wondered what they were doing. Was her mother still feeling ill and had Flash helping her? That was the most likely explanation.

But as she reached the top of the stairs, she heard a sound she knew all too well. Moaning.

It was a male's moan, something she had heard plenty of times from internet porn. That was the sound of a guy having a very good time. But why was she hearing it from her parents' bedroom?

She got her answer, when she reached the door and found it was slightly open. Enough for her to peak through the gap and look inside. And what she saw made her almost gasp and signal her presence. Though from what she was seeing, neither occupant would notice.

Her uncle Flash was standing in the middle of the room, as naked as the day he was born. He was holding onto the railings of her parents' four poster bed, letting out groans and moans at what was being done to him.

kneeling in front of him, almost as naked, was Flurry's mother. Cadance was squeezing her large breasts around Flash's cock, rubbing them up and down to give the man pleasure. And as she did that, her lips were locked tightly around the head of Flash's dick. All she was wearing, were a pair of light blue stockings and a garter.

Flurry could hardly believe what she was seeing. Her mother, a woman of great respect, was having an affair with her uncle.

Flurry had always considered her parents' marriage to be perfect. Something she wished to emulate one day. But now, here she was. Sucking on another man's cock, whilst showing him the body she should only allow Flurry's father to see. And of all the men in the world for her to cheat with, she was cheating with her husband's brother-in-law. Aunt Twilight's husband. The person Flurry loved most out of all her blood relatives.

"Fuck," she heard Flash groan as he clutched the banister of the bed harder, "just like that. God, your tits never disappoint." Flurry let this sink in and realised what those words meant.

"This isn't the first time," she whispered to herself. "How long has this been going on." She kept watching, almost in a hypnotic state.

As she did, she couldn't help but notice her uncle's physic. This wasn't the first time she had seen him without a shirt on, since he and Aunt Twilight had a pool party at their place every year. But now, Flurry was seeing him like she had never seen him before. As a man.

Flash's chest was incredibly hard, along with the six-pack he was sporting. His arms looked strong enough to lift two or three people at once. And his legs were clearly strong enough to let him dash at high speed. All in all, he was the perfect picture of male masculinity. And her mother was getting to enjoy every inch of him.

She heard Cadance gasp, as she finally released his cock from her mouth and tits. She smiled up at Flash before getting up. "We don't have much more time. The kids will be home in an hour or so." If only she knew.

Flurry watched the two begin to kiss, Cadance's tits getting crushed between her and Flash's bodies. Flurry had seen many kisses in her life. Almost every day between her parents, along with many between her aunt and uncle. Those kisses were ones filled with love and mutual respect.

There was no love in this kiss. It was just pure animal attraction. It was so primal.

Flash grabbed Flurry's mother by the ass and suddenly lifted her into the air, Cadance wrapping her legs around his waist as his cock slid along her cunt and ass.

Flurry was finally able to see her uncle's dick in all its glory. She couldn't be sure, but she knew it had to be a good eight or nine inches long and as thick as a soda can. The head was like a baseball bat's top and it seemed to be pulsing with excitement.

As Flurry stared at the raging cock, she suddenly felt her panties growing moist. She knew she should be getting aroused by watching these two in such a way, but she was and she wanted to keep watching.

Flash turned around and dropped her mother onto the bed, Cadance groaning as Flash pulled away from her lips and started kissing down her body. He spent several moments, ravaging her tits, then continued downwards.

As Flash reached her mother's pussy, Flurry found her hand moving to her own breast.

Something Flurry loved about being Cadance's daughter, was the genes. Her mother's bountiful breasts had always been something Flurry had idolised and envied. And because she was her daughter, Flurry got to enjoy her own breasts that were larger than most other girls her age.

Whilst she still wasn't her mother's size, hers were the perfect ratio for her body. And they had always been one of her most sensitive parts, which she often played with when she was masturbating. So as Flash ate her mother out for a minute or two, she unbuttoned her shirt and reached it to start playing with her tits.

Flash stopped kissing Cadance's cunt and moved up one of her legs, which he had placed on his shoulder as he began to line his cock up with her pussy.

As this was happening, Flurry wished she had a way to remember this for later. And when she realised she did, she reached into her bag before she had a chance to really think about it. And in less than a second, she had her phone out and pointed at her mother and uncle.

She managed to get her camera going seconds before Flash thrust his cock into her mother's pussy, the sight of Cadance's cunt being speared into forever immortalised. "Fuck!" Her scream filled the air, getting captured on camera as she clutched the bed sheets.

Flash's cock slammed into he hard, making Cadance scream out as he fucked her hard and fast. Clearly, she was used to having that raging monster inside of her. This just showed that they had done this before. Likely multiple times.

"Yeah!" Flash groaned, "take it you filthy slut!" Flurry couldn't believe what she was hearing. Her uncle had always been very respectful. Was this what he was like during sex. "You like that, don't you?"

"Yes!" Cadance cried, her body jerking around trying to get more of Flash's cock into her. "So good!"

"Who's better? Me, or your husband?"

"You!" Cadance screamed, "always you!" As she was fucked, Cadance's tits bounced around. "Shining can't compete!" Flurry was shocked and as she looked at her phone, she realised her father might one day hear this. Learning your cheating wife loved another's cock better than his, could cause him to become a shell of his former self.

"That's right!" Flash slammed into her several more times, then pulled out before rolling Flurry's mother around. Cadance was soon bent over the bed, her legs wide as Flash thrust his cock into her once again. As he did this, he started slapping Cadance's ass.

"Fuck!" Cadance cried, "don't stop! I've been a bad girl. Spank me!"

"That's right!" Flash spanked her some more, as he thrust his cock in and out of her. "You're nothing but a filthy whore. Playing hooky, just so you could get another taste of my cock." Cadance cried out again, as Flurry listened and thought about his words.

She frowned, realising her mother's cramps had been made up. She also wondered, how many times Cadance had pretended to be sick, just so she could get with Flash.

As Flash pounded harder and harder into Cadance's pussy, he suddenly stopped spanking her and grabbed the sexy MILF by the hair. He then pulled and Cadance's spin was forced to bend as she leaned back and stared into Flash's eyes. Had Cadance and Flurry not taken so many yoga lessons together, this would have probably snapped the poor woman in half.

Cadance's tits bounced around again, as Flash started kissing Cadance despite her head being upside down.

Cadance's kissed him back and the pair kept moaning, as Flash fucked her harder and harder for another minute or two before pulling his lips away. He then released her hair and as she fell forwards, Flash pulled his cock out of her again.

As if knowing what he was gonna do, Cadance got off the bed and let Flash jump up onto it. Once he was laying on said bed, the same bed Cadance shared with her husband, the woman climbed up onto it and found herself sitting in reverse cowgirl.

She quickly lowered herself onto his cock once again and groaned, her pussy once again spreading around his monster instrument as she started bounding up and down. "That's it," Flash cried as he held her by the hips. "Ride that cock."

Cadance moaned and laughed, clearly enjoying every second of what was happening.

Flurry could hardly believe it. She didn't know if this was how she was with her father when she and her siblings were out of the house, but she had certainly never been this vocal the few times she had heard them going at it.

As she watched, she couldn't take it with just her breast. Instead, she pulled her skirt up and used her mouth to hold it, as she slowly slid her fingers into her panties and started playing with her.

As soon as he fingers touched her pussy, she moaned into her skirt as she felt a jolt of pleasure flow through her.

She kept watching and speeding up her finger fucking, as Cadance kept moaning. Flurry's attention kept shifting between the large cock, currently making her mother's stomach bulge, and the swinging tits Flurry had once nursed from. Flurry had never been attracted to women before, but seeing her mother in such a state was as much of a turn on as seeing her uncle fuck her.

Flash soon released her hips and grabbed her arms, holding them steady as he started thrusting upwards into Cadance's cunt. The force in which he fucked her was so great, that he would have thrown her off is he wasn't holding her wrist. The impact made Flurry's mother scream in absolute delight, the proud and sophisticated woman Flurry had grown up to adore reduced to nothing but a screaming whore for a man that wasn't her husband.

"Fuck yes!" Cadance cried, "don't stop! Please don't stop!" Flash clearly didn't intend to do that, as he pounded up into her pussy again and again with great force.

If Flurry wasn't so focused on her own pleasure, she might have been impressed by her uncle's stamina. Not only had he lasted far longer than Flurry figured men should last, but he was also doing some rather impressive manoeuvres. If her father had tried something like this, he would have thrown his back out.

They kept this up for several more minutes, Cadance's screams becoming etched into her daughter's brain. All the while, Flurry kept watching, filming and fingering herself at the sight. She could feel her own orgasm approaching and she had to assume, those two weren't far off either.

Flash then pushed Cadance off of him and the mature and sexy woman fell forward, onto all fours, allowing Flash to pull out of her. He then grabbed her by her legs and swung her onto her back, Cadance moaning as her head hung off the side of the bed.

She moaned, as Flash pushed her legs back and got between them, grabbing her hands in his own as he got her into a mating press. And as he did, he thrust his cock into her cunt with one mighty lunge. "FUCK!" She screamed, as Flash pounded into her like a rabid animal.

They kept screaming each other's names, as all their other sounds devolved into primal grunts of pleasure.

Flurry couldn't hold herself back anymore and she fucked herself harder and harder. And as she did, she felt her orgasm beginning to build. And her mother was drawing closer to her own climax. "I'm gonna cum!" Cadance cried. "Cumming! Cumming! Cumming! I'M CUMMING!" She screamed, as her entire body shivered. And Flurry soon followed and had to bite her lip.

The teen girl groaned as pleasure shot throughout her body. Her legs began to grow weak and she had to lean against the wall, followed by her sliding down it whilst keeping her phone's angle trained on the pair.

Flash began to grunt himself, "FUCK!" He thrust into her one last time before going completely still, as Flurry's mother kept thrashing about in her orgasm. They stayed like this for several long moments, as Flurry watched them and was still being overwhelmed by her own orgasm.

But eventually, Flash let out a groan as he finished his climax and fell down upon Cadance.

Flurry's mother moaned, as she let Flash's hands go and pushed her legs down. They became wrapped around Flash's own legs, as Cadance's head remained hanging over the bed. Flash's head was resting on her chest, comfortably laying between her breasts as the two basked in the afterglow of their rutting.

Flurry kept watching, as her own orgasm had subsided. And when it did, Flash lifted his head off Cadance's chest and smiled. "So, will you be luring Shining into bed tonight?"

Cadance sighed, "I doubt it. He's so busy with this case, I might not see him for weeks. But I'll probably have to get his pants down as soon as I can. Just in case."

Flurry frowned, wondering what she meant by that. But then, she realised Flash had cum inside her mother. And if her mother wasn't using any kind of protection...

Flurry had finally had enough. She couldn't risk either of them noticing her at the moment. As such, she carefully shut her phone down and got up.

Being sure not to make any noise, she headed back downstairs whilst buttoning up her shirt. She then headed out the door and as soon as it was closed, she broke out in a run as everything she had just witnessed came crashing back to her.

Flash and her mother had always had a close relationship with their spouses' side of the family. Flash had gone fishing several times with her father, grandfather and whoever else on their side of the family. Cadance had always been seen as her grandmother's other daughter, even before she married her father. And there they were, screwing around and betraying the family they had been so happily accepted into.

Flurry eventually arrived at a part near her home, where she and her siblings had played many times growing up.

She found a bench and sat down, as she held her phone in her hand. The video she had made was ready to be watched and against her better judgement, she hit the play button and the indecent act was shown.

As she watched, she knew what she should do. It was obvious who was in the film and if she showed it to her father or aunt, they would know what was going on. They deserved to know what was happening.

But video Flash started spanking her mother, she was suddenly thrust into the future. Her father and aunt would be heartbroken, whilst the rest of the family would be distraught. Her mother and uncle would be kicked out of said family, whilst Flurry's little siblings would be put under investigation.

What would happen if they weren't her father's children? Would they also be kicked out of the family? Would they go live with their real parents, wherever that was? Would Flurry ever get to see them again?

"No," Flurry shook her head, "I can't do that. So what do I do?" She stared at the phone again. as Cadance rode Flash's cock.

Flurry frowned and rewound the video, so it showed Flash at a better angle. And as she did, she waited for the right moment and eventually paused it to show Flash's full naked form. The sight of it was once again causing Flurry to feel a need between her legs.

It was then that a bolt of lightning seemed to strike her head, as she realised what she wanted to do. "Uncle Flash. I want to do Uncle Flash." She could hardly believe it, but she was attracted to someone she had always considered as basically a blood relative. But he wasn't. "He's hot, charming and has always loved me."

She played the film again and this time, she imagined herself in her mother's place.

The mental image made her groan, as she rubbed her legs together. "I want that." She had never really thought about how she would lose her virginity. She always told herself that she would wait until she found the right man. But the right man had never appeared.

Most of the boys she knew that were her age, were all snobby creeps. She knew just by looking at them, that they would not make her first time feel special. They would probably only last a few moments and be done, leaving her totally unsatisfied. And then, they would likely brag about the whole thing to their friends. Although, since she was the principal's daughter, she doubted any of them would be that stupid. Then again...

Flurry shook her head, as she watched her uncle inseminate her mother.

The look of pleasure on Cadance's face, made Flurry wish she knew what it was like to be in her place. "I will know," she told herself. "I don't care what it takes, I'm going to feel what it's like." She didn't know how exactly, but she made a solemn vow. "Uncle Flash is going to take my virginity. He's going to teach me everything there is about feeling pleasure. He's going to make me a woman, whether he wants to or not."

She looked down at her phone, knowing that the film she had would be everything she needed. But she had to be smart with it. She had to make a copy, since her uncle could probably manhandle the phone out of her grasp and delete it. But she had to be careful about what she did with that copy. She couldn't let it be on her laptop, since it could be found if someone happened to be looking at it.

Flurry checked the time and realised that it would soon be time for her siblings to head home.

She didn't want to risk them walking in on something like she had. She needed to be the first one there. And hopefully, the two of them would be cleaned up and fully dressed.

She headed out of the park, all the while trying to figure out how she would seduce her uncle. If she could do it without the film, that would be great. But she needed to figure out when, where and how she would achieve it. Once she did, she would be ready to become a woman. "Watch out, Uncle Flash. I'm coming for you."