Eleven out of Ten

Written by: minoan

- - - - - - - -

November 27, 1997

Two lines. It was clear as day. The lines weren’t blurry or faint. 

They’d been just as clear the last two times she’d tried it too, and Jennifer knew that if she ran through the whole pack of applicators it wouldn’t change anything. There would still be two lines on the test strip, and the instructions on the side of the box told her exactly what that meant.

The hulking 7’10” Shire horse sighed as she leaned forward, cradling her equine head in her large, powerful hands while sitting on the toilet in the bathroom that connected her bedroom with her 14-year-old brother’s room.

“I can’t believe this is happening...” the high school senior mumbled to herself again, wishing, hoping against hope that it wasn’t true. But when she spread her fingers to uncover her eye and looked down at the test strip again nothing had changed. Two lines, clear as day. She was pregnant.

As she sulked she could hear her little brother playing his stupid video games just on the other side of the door. That’s where he spent most of his time anyway, but he’d barely left his room at all in the month it had been since – the accident.

‘The accident.’ That’s what Jennifer had been calling it in her own mind for the past month, though she hadn’t spoken a word of it to anyone. That seemed to be a cleaner way of thinking about it than addressing what really happened: mistaken identity, her single-minded determination to hook up with the most popular colt in school, a cascading series of events that culminated with her getting fucked raw and knocked up by her 8th grade brother.

“I can’t believe this is happening...”

What happened at the Halloween party had been the talk of Chester P. Hooferton High for weeks. Dozens of colts and fillies had seen her drag the mystery colt in the SpiderHorse costume into the bedroom, and several more had walked in on them while they were fucking. Jennifer had a reputation for being slutty already, but nobody at the party even knew who ‘SpiderHorse’ was. During the next week at school it became apparent that Jennifer didn’t even know who he had been – or if she did, she wasn’t telling.

The fallout from the ‘accident’ had been swift, the embarrassment total. Jennifer stopped getting invited to parties. The fillies who already hated her laughed in her face, and even the ones who were once friendly with her would duck away when they saw her coming. She could hear the snickers and taunts as she ate lunch alone, and now when they called her names they added qualifiers like ‘gross,’ ‘nasty’ and ‘filthy.’ Her reputation had been tarnished to the point where the colts didn’t even want to be seen with her – she may have been an easy lay, but if word got out that they hooked up with ‘Gross Jenny’ their reputation would be sunk, too.

“I can’t believe… that little dork and his…”

Jennifer stopped herself before she finished the thought. ‘That little dork and his fat fucking cock’ had been what she’d been thinking. And as much as she wanted to pretend that she wasn’t, during the several weeks since ‘the accident’ she had been thinking about that fat fucking cock non-stop.

It had only been a few months since she’d had sex the first time, back in September when the quarterback of the football team fucked her after she’d sucked off several other colts at a party. Between that time and the ‘accident’ on Halloween night she’d let dozens of her classmates fuck her, sometimes more than one guy on the same day, sometimes several in succession at parties. She’d convinced herself that it was no big deal and that it was just a byproduct of her new popularity, but deep down she knew the truth.

She knew the truths, actually.

Firstly, hooking up with half the guys in her class wasn’t a result of her popularity – it was the reason for it. And that kind of ‘popularity’ was the worst kind.

Secondly, she liked sex more than she ever thought she would when she was a virgin mare. She didn’t just like sex, she didn’t just love it – by that Halloween night she was absolutely addicted to cock.

And thirdly, her dorky little 14-year-old brother’s cock had been the best she’d ever had. Before she found out it was him, when she thought it was Brad... that throbbing black rod with pink splotches, inches longer and much thicker than any other colt she’d fucked, pumping wildly in and out of her, churning her pussy, his leathery black sack with its two baseball-sized nuts slapping against her as he hilted her time and again – that had been the best sex of her young life.

“Little dork and… his fat fucking cock...”

Her fingers had found their way to her slit and she was fingering herself almost reflexively. It was Thanksgiving day, nearly a month since she’d had the best sex of her life, nearly a month since she’d had sex at all now that all the colts at school were shunning her. She was desperate.

Jennifer knew the ramifications of the positive pregnancy tests strewn on the bathroom floor at her hooves. She knew it was wrong, that it was incest, that the whole situation was fucked up beyond belief, but she still couldn’t help it. She’d been masturbating at random all over the house for weeks almost unable to control herself. She’d almost been caught by her mom several times. And every time she did she was thinking of her brother’s cock.

She couldn’t believe she’d never noticed it before. It was so obvious now that she knew what he was packing. They’d barely spoken a word to each other for the past month, but the few times she’d seen him she couldn’t help but stare at the huge bulge in his pants, sometimes even the clear outline of his enormous shaft trailing down the pant leg. She’d always wondered why he wore such ugly, baggy pants all the time. Now she knew. He was just doing his best to keep that absolute monster of his hidden.

It seemed like he honestly had no clue how obscenely well-endowed he was, either. She’d never seen him with a girl, and he seemed so weak and timid around her most of the time. Jennifer would have thought that beast would inspire some confidence in him at least, but he seemed oblivious. Maybe it was because he was still so young, or maybe it was because he was so small, especially for a Shire – just 5’7” and 140 pounds. Jennifer was more than two feet taller than him and weighed more than 200 pounds more.

“Little dork… and his… fucking cock… ahhhn!”

Jennifer moaned as she felt her orgasm coming on, fingering herself on the toilet. But as soon as she made the noise she heard Matt pause the Pretendo 64 he was playing in his room just on the other side of the door. Her other hand shot to her mouth to cover her squeal of pleasure – had he heard her?

Quickly she grabbed the used pregnancy tests and darted out of the bathroom into her bedroom. She slammed the door behind her before she flopped on her stomach onto her bed and screamed into her pillow. All at once she felt like crying, like running away, like bursting into her brother’s room and pinning him down and riding his dick like the draft horse he was.

And she hated that she felt this way. She got knocked up by her own brother, for fuck’s sake! What would she do? She couldn’t ignore it! But even as she screamed into her pillow again she realized that almost subconsciously she was grinding her hips into her bed, her desperate need for sex hanging over everything. Why was she like this? Why couldn’t she stop thinking these unspeakably wrong thoughts about her brother? Maybe everyone was right – maybe she was just a nasty, gross, filthy mare. 

She screamed into her pillow a third time, louder and longer. She had to talk to Matt. She had to tell him the situation she was in – that they were both in. She didn’t know what would come next, but they couldn’t avoid each other forever.

“Kids!”

Jennifer’s equine ears perked up and spun hearing her mom’s voice, her face still sunk in her pillow.

“Kids, come downstairs! Your aunt and uncle and cousin are here!”

- - - -

He almost had it that time!

Matt had already unlocked every other cheat in GoldenRye 64; all that was left was the invincibility cheat. It was the most difficult to unlock though, requiring him to beat one of the hardest levels on the hardest mode in such a short amount of time that it seemed impossible when he first tried it. But he’d been whittling down his time over the past week, and now he was so close! He was even hoping he might be able to do it this morning before his aunt, uncle and cousin showed up to eat Thanksgiving dinner at their house. He’d only been three seconds off that time, he was sure he could do it!

In the back of his mind he was almost afraid to unlock the cheat, though. It was the only goal he had left in the game that he hadn’t achieved, and once he completed it there would be nothing left to do. There would be nothing to distract him. And that scared him.

Playing his Pretendo 64 was just about the only thing he’d done for the past three and a half weeks. It kept him distracted, it kept his mind occupied. So long as he was busy playing games he didn’t have to think about what happened last month. The Halloween party. The costume. His sister. Sex.

He was beginning to question whether it was even real. Could that have really happened? For real? As the weeks wore on it seemed almost like a dream to him. Did he just imagine the whole thing?

But he knew that wasn’t true. The terrible accident had happened, the unspeakable line crossed without either of them realizing it. He’d lost his virginity to his own sister.

They hadn’t spoken since then, not one word in almost a month. If nothing else that told Matt it was real – her persistent bullying and belittling of him had stopped. Now she avoided him, not even making eye contact during the odd moments they saw each other in the house. Matt did the same, praying every time her left his room thathe wouldn’t run into his sister in the house they shared. It was awkward beyond belief.

So he spent most of his time in his room playing video games.

“Ahhhn!”

Matt paused the game. He knew his sister was in the bathroom between their rooms already – he could always hear her door opening or closing – but that sound…

He felt his equine cock start to harden in his baggy cargo shorts. That was another reason he’d been avoiding his sister; every time he saw her, all he could think about was that night. Her thick, meaty ass. Her strong hands groping his body. Her huge boobs bouncing with his thrusts. Her warm, tight pussy around his flaring equine cockhead as he came deep inside her.

And that sound. It seemed like the same one she was making when she was bouncing on his dick, and like a Pavlovian response his dick was responding.

Matt heard her slam the bathroom door. Whatever it was, she was back in her room now.

“God dammit, Jennifer...” he said with a sigh as he adjusted his pants to allow his rapidly swelling horse cock to lengthen down one pant leg. He lifted his leg and tucked his horse-hose underneath as it grew, the entire black and speckled-pink length running under his thigh and the flat equine glans pressing against his calf. He adjusted his gigantic black balls, each one bigger than his fist.

He wished his penis wasn’t so big sometimes, but this wasn’t like before Halloween when he could control it, only getting hard when he was peeping on his sister underneath the door when she took a shower. Now he was getting hard every time he saw her, heard her, or even thought about her. It made just walking around the house difficult.

Oh well, he thought as he unpaused the game. It doesn’t matter as long as I am in here. So long as Aunt Lindsey and Uncle Bob and his little cousin Ellie didn’t show up in the next few minutes…

“Kids!”

“Oh god dammit...” Matt said with another sigh, hearing his mom calling up the stairs.

“Kids, come downstairs! Your aunt and uncle and cousin are here!”

- - - -

It was several minutes before either Matt or Jennifer made their way downstairs. Unbeknownst to their guests, Matt had to wait until his erection subsided and Jennifer had to finish masturbating and put on some clean pants before coming downstairs to greet everyone.

“There he is! Put ‘er there, slugger!”

“Hi Uncle Bob,” Matt answered, shaking his uncle’s hand at the base of the stairs. Matt didn’t mind his uncle Bob too much, but he still thought Matt was a little kid. Bob stood out like a sore hoof among the rest of the family; unlike everyone else there he wasn’t a Shire, or even a draft horse. He was a Shetland pony, short and stout in stature, only slightly taller than Matt. His coat was similar to the light gray with mottled white spots shared by everyone else in the family, but it was a shade or two darker with more pronounced spots.

“You look like you’ve grown since we saw you last year! How tall are you now?” Matt’s aunt asked. She was sitting on the couch next to Matt’s mom.

Matt looked to her; her face and coat coloration looked almost just like his mother’s – which made sense considering they were sisters with an age difference of only two years – but she was quite small for a Shire. Whereas Matt’s sister was 7’10” and his mother was a more normal (for their breed) 7’1”, Matt’s Aunt Lindsey was only 6’2”. Her frame was also much slighter than either Matt’s mom or his sister, her slim torso and small breasts contrasting with the curvy femininity of the women Matt shared the house with. Still, she was extremely attractive in her own way, her body slim and toned. She’d been an athlete in college and still, at age 32, was fitter than most mares ten years her junior.

“Hi Aunt Lindsey. No, haven’t grown, still the same height I was a year ago...” Matt answered sheepishly.

“Oh, sorry. You just seem... bigger this year. Chin up, you’re a Shire, you’ll grown into those britches soon,” she replied.

Matt noticed a coy grin on her face, and it seemed to him that her eyes darted downward to his ‘britches’ when she mentioned them. Was she just commenting on how big and baggy his pants were? Or did she mean...

“Matty!!”

Matt’s 14-year old cousin Ellie dropped her travel bag in the front doorway and ran to him, jumping into his arms.

“Ellie belly!!” Matt said happily as they hugged each other tightly.

Matt used to be really close to Ellie when they were growing up, before his relatives moved from the next street over to the next state over. They were almost the exact same age, born just a week apart, and from the time they were born until Ellie moved away when they were ten years old they spent almost every moment together they could.

Matt was never close to his sister, but Ellie was like the sister he never had. In a lot of ways she was like the brother he never had – when they were kids they spent their time fishing and swimming at the lake, riding bikes and skinning knees. She was such a tom-boy that Matt never really thought of her as a girl, just as his cousin and best friend.

But that was years ago. They talked on the phone a lot when she first moved away, but over the years the distance between them had made their relationship more distant too. Still, there was that instant spark of friendship whenever they met face to face, like the years apart meant nothing and they had just seen each other yesterday.

As they broke their hug they both lingered for a moment. This time when their eyes caught they both recognized, instantly, that the spark wasn’t just friendship. Matt became aware, all at once, that they weren’t kids any more. He wasn’t just holding his best friend in his arms, he was holding a beautiful teenage filly who he loved deeply and who loved him. He knew in that split-second that she realized the same thing about him. Her eyes said everything.

“There she is! Put ‘er there, princess!” Uncle Bob’s voice boomed.

Matt looked up and saw Jennifer coming down the stairs. When they made eye contact they both instinctively looked away.

- - - -

It was the most awkward Thanksgiving morning ever for Matt and Jennifer. After they came down downstairs and everyone sat down they realized that the loveseat was the only piece of furniture left in the room for Matt and Jennifer to sit on. With Jennifer’s size they couldn’t help but brush up against each other as their uncle and aunt chatted with their mom about their work and their lives, catching up and retelling old stories. Jennifer was visibly uncomfortable, fidgeting and doing everything she could to not look anywhere close to her brother, and Matt wished he could sink between the loveseat’s cushion and the armrest.

To make matters even worse there were the strange glances Matt was getting from both his Aunt Lindsey and his cousin Ellie. Matt was trying to look away from his sister as much as she was trying to look away from him, but every time his eyes caught either of his female relative’s eyes there was something in them, something he couldn’t place but knew deep down was dangerous. So he mostly looked at the floor, out the window, at his mom or at his uncle Bob.

If Bob sensed any of the nervous energy coming from him or Jennifer he certainly didn’t acknowledge it. He told the same tired stories he told every time he visited. Matt knew this one before it even began.

“And then he comes roarin’ around the hill, shirt’s all ripped to hell, still got that damn thing in his hand, and as he zooms on by he just yells at us, ‘I’m gonna catch that damn turkey!!”

Uncle Bob bellowed at the final line of the story they’d all heard a million times while everyone else in the room pretended to laugh.

“Aww hell, that reminds me, we were supposed to pick up the propane for the turkey fryer!!”

“You told me you packed that,” Aunt Lindsey said, turning in her seat to look at her husband sitting on the sofa with her.

“Well… I forgot,” was Bob’s only defense.

“How could you forget that?” Lindsey shot back.

Now things were getting a little interesting, Matt thought. Both he and Jennifer turned to look at their bickering aunt and uncle.

“I just forgot! I forget things sometimes! Sorry!”

“It’s gonna be really hard to find propane on Thanksgiving day, Bob...”

“I know! I said sorry!”

“There’s probably not even any stores open that sell...”

“I know, I know! So we gotta go right now and find a hardware store that’s open.”

“Now?”

“Yes, now, Lindsey!”

She sighed heavily.

“All right, let’s go,” Bob said as he stood up from the sofa. “Ellie, you want to come too?”

“Not really...” Ellie replied. Something about the way she said it made Matt have to stifle a laugh.

“Well too bad, little lady! We might need you, you’re coming with!”

Ellie rolled her eyes as both she and her mother stood up as well.

“Anyone else? Room for one more in the car!”

“I should probably go too,” Matt and Jennifer’s mom said, getting up from her own chair. “Some new stores have opened up since you lived here, I think I know one that might have some propane.”

“All right, you’re the navigator!” Bob said to Matt and Jennifer’s mom before turning to them. “Kids! Hold down the fort!”

Like a whirlwind the entire group left out the front door and shut it behind them, and suddenly, unexpectedly, Matt and Jennifer found themselves sitting alone together on the loveseat in the living room.

For a moment they were both still, not even breathing, petrified and unsure of what to do next.

Almost like a spasm Matt jumped up. Jennifer watched him take a few brisk steps towards the stairs.

“Wait...”

Matt froze. Jennifer looked on in horror as he turned, his eyes meeting hers. It was like her lips had moved on their own – she didn’t know why she’d said it, and she didn’t know what to do or to say now that she had. She could see the fear in his eyes. She was certain he could see the same in hers.

Seconds passed. More than either of them though would.

Matt stumbled as he turned, almost tripping over the coffee table. Jennifer could hear the heavy clopping of his hooves as he ran – ran – up the stairs and out of sight. He slammed the door to his room loudly.

Jennifer was still frozen in place. She still didn’t know what to do, but she recognized that some part of her needed to talk to her brother. This had to stop. She needed to clear the air about what happened that night. And he needed to know about the foal he’d put inside her so they could both put that night behind them and figure out what the hell to do next.

Jennifer sighed heavily. All these things needed to happen, and they needed to happen soon.

- - - -

Matt had retreated to his room, into the alternate reality of video games. He’d locked his door.

The nightmare of what had happened between him and his sister, what it really meant – it became too real when he saw her eyes. He had to escape.

He didn’t have to think about that when the controller was in his hands. All he had to think about was beating Facility on the hardest difficulty in under 2 minutes and 5 seconds. When his mind and body was focused on that, he could ignore everything else.

The facade collapsed when the door to the bathroom that connected his room to Jennifer’s began to open. Both their doors locked from the inside, the bathroom side, so it was impossible for either of them to lock it from their respective bedrooms. It had been an unwritten rule between them since they were little that neither of them should ever use the bathroom door to enter the other’s room.

But this was different. All the old rules were out the window.

The door cracked just enough for Matt to see a sliver of his sister’s long equine face. He was sitting on his bed and had to look up almost to the very top of the doorway to see her peeking in.

“Your door was locked...” Jennifer said quietly, almost apologetically. “Can we… can we talk? About...”

“Yeah...” Matt answered just as timidly, his voice nearly cracking.

“Can I… come in?”

“Okay...”

Jennifer opened the door, taking a step into her brother’s room. They were both looking down at the floor as she walked between Matt, sitting at the foot of the bed, and the TV screen displaying the pause screen from GoldenRye 64. The bed heaved as she sat on the side of it, her 350 pound frame depressing the mattress enough for Matt to feel it.

For a few tense moments they sat on Matt’s bed without saying a word, Matt with his back to his sister and Jennifer looking at the floor between her hooves. Maybe it was better this way, she thought, as she gathered the courage to speak. It was like a therapy couch.

“So… about what happened on Halloween night...” she started.

From the corner of her eye she saw Matt’s head droop down into his hands.

“At the costume party...”

“I’m sorry!! I’m sorry, I’m sorry, I’m sorry!!” Matt belted out, beginning to sob uncontrollably. Jennifer saw him collapse on his knees down onto the floor, his head still in his hands.

“I didn’t know it was you! Billy told me there was a party, and there were hot girls, and no one would know we weren’t high schoolers because it was with costumes, and then he didn’t show up, and I was gonna leave...”

Jennifer slid off the side of the bed down to the floor so that she was sitting in front of her brother. She’d never seen him this way. It was clear that it had been a great big accident, which she already thought was the case, but she couldn’t ever figure out why her brother was there. That had left the possibility, however remote, that he had orchestrated the entire thing.

Deep down she knew he wasn’t that devious or, frankly, that clever. It had been her initiating the entire tryst, after all. Now, seeing him crying inconsolably on the floor, she could see that it had been eating at him the same way it had been eating at her for the past month, maybe even worse. For the first time in as long as she could remember she felt empathy, real empathy, for her brother.

“I was gonna leave! I was just about to leave! And then this super hot high school mare grabbed me, and pulled me into a bedroom, and things started happening really fast, and it felt so good, and I wasn’t thinking because it felt so good and it was my first time with a girl and I couldn’t believe it was happening and it was happening so fast, and then I finished and that felt best of all, and then the lights came on, and it was...”

“It was me,” she said, finishing his thought, her voice trailing up gently.

Matt spread his fingers, which had been covering his eyes, and through the slits between them he saw his sister Jennifer sitting in front of him on the floor. 

He’d feared this moment. For the past month he’d feared it. She’d thrown him across the room, quite literally, when ‘the accident’ happened between them on Halloween night. She was the sexiest mare he’d ever seen, but with more than two feet on him and with an extra two hundred pounds of mostly solid muscle, she could crush him on a whim if she wanted.

But something about the way she said it, ‘it was me,’ told him she wasn’t going to. The way she said it, she didn’t even seem mad at all. Something about the way she was looking at him right now told Matt that, despite everything that had happened, despite the years of bad blood between them, she still cared about him.

Before he realized what he was doing, his emotions scattered and confused, Matt all but leapt into his sister’s open arms. The siblings wrapped their arms around each other, hugging each other tightly.

“I’m sorry, Jennifer! I’m sorry! I didn’t know!” He pleaded again, tears still running down his face.

“It’s okay, Matt. It’s okay,” Jennifer consoled, speaking gently into her brother’s long equine ear that was brushing against her face. “It was my fault more than yours. I… thought you were someone else. It was a big mistake. Okay? A big mistake. I’m sorry too.”

For a few moments they clung to each other, not saying anything as Matt’s emotions began to subside.

“Wait...” he said, finally, “who did you think I was?”

“Do you really want to know the whole story?”

“I think… yeah,” Matt answered, slightly unsure. “I think we both need to know the whole story from each other’s side.”

“Okay then,” Jennifer said with a sigh, letting go of her brother and starting to stand up from off the floor. “Let’s talk.”

- - - -

For the next half-hour they sat on Matt’s bed and talked openly about that night, filling in the blanks for each other and figuring out how one event led to another to end with them fucking in a strange house in strange costumes on Halloween night.

“It’s kind of a funny story, you know? Now that it all makes sense,” Matt said.

“Yeah. It would be if...” Jennifer started, cutting her sentence short.

“If what?” Matt asked.

Jennifer’s brow furrowed, her nostrils narrowing. She was about to say ‘if not for the fact that you knocked me up and I’m carrying your incest foal,’ but she thought better of it. Now wasn’t the time to drop that bombshell. Not yet.

She decided to just change the subject, avoid it altogether for now.

“So that was your first time?”

She regretted asking it as soon as the words left her mouth, but it was the first thing she could think of to change the subject away from Matt’s impending fatherhood.

“Yeah...” he answered, almost in embarrassment. “I’d never even kissed a girl before.”

“I was your first kiss?” Jennifer repeated incredulously. She knew her little brother was a dork, but being his first kiss surprised her.

“Yeah… you were. Was I...” Matt started. “Was I any good?”

“At kissing?”

“At… everything, I guess.”

Now it was Jennifer who was at a loss for words. Why did she start down this line of conversation? Should she tell him the truth? How do you tell your brother he has the biggest cock you’ve ever seen and he was the best lay you’ve ever had?

“Yeah. You were good.”

“Really?”

“Really.”

“Like… was I really good? Or are you just like, I was really kind of good… or are you just saying that to make me feel better...”

Jennifer hesitated, thinking better than to say what she wanted to say. But they’d already come so far. Why not, she thought.

“Jeez, Matt,” she said, leaning back on his bed and looking up at the ceiling while he remained seated at the foot of the bed. The bed creaked and groaned as it accommodated her weight. “Do you really not know?”

Matt looked back over his shoulder, his sister sprawled out on his bed, her enormous frame covering most of it. There was a sly grin on her face that he hadn’t seen before.

“Know what?”

Matt saw her shake her head slightly side to side, the coy grin still in place as she looked up at the ceiling.

“Okay, dork, if you really don’t know I’ll say it. But I’m only going to say it once, okay?”

“Okay...” Matt answered, confused but curious.

“You have… like, for real, Matt, you honestly have the biggest cock I’ve ever seen in my life. Not just by a little. And I’m not just saying that, or like, joking around. It’s a fucking monster.”

“Wait… really? Seriously?”

She tilted her equine head, looking down her body to her brother.

“Are you being serious? Like… how do you not know that? That thing is bigger than your forearm. And your balls… your balls are huge, I’ve never seen anything like it. They’re like oranges. How do you keep it all in your pants?”

This was all a revelation to Matt. He knew about his struggles with pants, but he assumed it was an issue all guys had to deal with. He never considered the possibility that he might just have a freakishly enormous cock.

“I mean… I guess I do have some problems with my pants. Keeping it in, hidden I guess. Especially when I get… I mean when it’s...”

“I’ve seen it running down your pant leg.”

There was an awkward silence for a few seconds.

“Anyway, that’s our boner talk. It’s only gonna happen once,” Jennifer said, looking back up at the ceiling and hoping to end this subject now. Maybe she should have stuck with talking about their incest baby.

“You said...” Matt interjected after a few seconds, trying not to annoy Jennifer. “You said it’s the biggest you’ve ever seen, right? But I guess...”

She tilted her head again to look at him, the look on her face conveying to Matt in its entirety the question ‘you’re not about to ask what I think you’re about to ask, are you?’

But he had to.

“Like… what kind of sample size are we talking about here?”

“Oh my god, Matt...” Jennifer said with exasperation. “Why are you even asking me that? Look, you weren’t my first rodeo, okay? I’ve seen quite a few cocks in my time. Quite a few. Up close and personal, okay? Large sample size.”

“Eww...”

“Oh my god! Don’t you ‘eww’ me! I’m a girl, I like cock! You’re a boy, you like pussy! There’s nothing wrong with that. We can say that, right? Don’t ask the question if you don’t want the answer. Yes, I’ve fucked a lot of guys. Yes, your cock is some kind of weirdo science-project alien anomaly. You’re gonna make some mare very, very, very happy with it someday. Let’s leave it there and stop talking about it.”

And for a moment they did. Jennifer looked back to the ceiling, counting the rotations of the spinning ceiling fan. Seconds passed feeling like minutes before Matt spoke.

“What about you?”

Jennifer closed her eyes, mulling the question.

“What do you mean, ‘what about me?’”

“Did I make you happy?”

Jennifer waited for a moment, her eyes still closed. What should she say? He was the best she’d ever had. She didn’t want to say that – how weird would that be – but she didn’t want to lie. She’d come this far…

“Yeah. You did. But I thought you were Brad at the time,” she answered, eyes still closed.

“What if you knew it was me...” Matt asked.

“Why are you asking me this, Matt...” she asked lowly, almost cautiously. She didn’t know where he was going with this new line of conversation.

“Because...” Matt started, gathering his courage. “Because you’re the most beautiful girl I’ve ever met.”

Her eyes snapped open.

“Why would you tell me that...” she asked in the same low, cautious tone, almost afraid of the answer.

“Because it’s true. I’ve always thought that about you. Even when you were mean to me all the time, I still thought you were beautiful.”

Jennifer’s ears flattened against her brother’s pillow.

“I’m… sorry about that,” she said, fully sincerely but also trying to change the subject. “I know I was mean to you. I was a bully. For a really long time I bullied you, and that was wrong.” 

She paused again, but Matt didn’t interrupt.

“After… what happened… with us… a lot of things changed for me. And maybe not all bad. I thought about a lot of stuff, you know? I’ve had time to think about stuff. Time to be alone. I was a really big jerk for a while. I can see that now. I cared about a lot of stuff that didn’t matter, and I was mean to you when I shouldn’t have been, when you didn’t even do anything to me. I really am sorry for the way I treated you, all those years. I should have been a better sister.”

“I’m sorry too...”

Matt’s answer surprised her. She’d spilled her guts to him about the years she’d treated him like dirt, trying to make amends, and he apologizes?

“For what?”

“For… peeping on you in the shower.”

Jennifer’s upper body shot upright from her brother’s bed in shock.

“You fucking what??!”

“I said I was sorry! We’re being honest, right?! I peeped under the door when you were taking a shower sometimes.”

“Oh my fucking GOD, Matt!! You little pervert!!” Jennifer snorted in disgust, leaning back down on Matt’s bed, grabbing his pillow and covering her face with it.

“I said I was sorry!”

A few seconds ticked by. Jennifer might have lost her cool a few months ago, but what she said before was true. She had thought about some stuff, realizing she had been a jerk to Matt for many years for no real reason. Everything had changed between them after that night, and there was no going back.

“How often did you do it...” she asked, her voice muffled by the pillow over her face.

“Like… almost every day.”

“Oh my god...”

“Sorry...”

“Like… for how long did you do it?”

“I dunno… usually until I finished.”

“Oh my fucking god, Matt!! That’s not what I meant!!”

“Oh, you mean like, when did I start?”

“Yeah...”

“I dunno… a few months ago.”

Jennifer sighed heavily again before tucking the pillow back beneath her head. She looked up again at the spinning ceiling fan.

“Couldn’t you have like, gotten a porno mag from your friend Billy or something? Jack off to that instead of spying on me in the shower?”

“I did! I got a couple issues of NeighBoy from Billy! But I mean… I dunno. I’m sorry. I shouldn’t have spied on you like that. I know it was wrong. It’s just… what I said earlier? About you being the most beautiful girl I’ve ever met? I meant that. You are. Even the mares in those magazines, they’re not nearly as pretty. And you were just on the other side of the door, naked, and I thought… I dunno. I wasn’t thinking. Sorry for being a pervert. That was a really screwed up thing to do.”

Jennifer looked down the bed at him. She assumed he’d just been talking when he said it earlier, told her she was beautiful, but now she wasn’t so sure.

“You’re not serious, are you? About thinking I’m pretty?”

Matt turned. His eyes caught Jennifer’s.

“I am serious. You’re… eleven out of ten.”

“Did you read that line in one of those issues of NeighBoy?” Jennifer said with a smirk.

“Yeah,” Matt admitted with a shy grin of his own. “But it’s true. You are.”

“Nobody thinks that. The guys at school that I… they were just into me because...” she said, not wanting to admit to her brother that she had been so promiscuous with the colts at school. “I’m almost eight feet tall. I weigh like… almost three of you. No one wants a mare as big as me, not really. Not if they have a choice.”

“I do...”

“No you don’t...”

“I do!” Matt said forcefully enough that Jennifer had to believe him. “I swear I do! I’ve always liked big mares. And I’m not saying ‘big’ to be mean or anything Jennifer, I really mean it! That’s really what I like! Everyone likes different things, you know? Like, why do some guys like boobs and other like butts? Why do some guys like mares with gray coats, or black, or blond, or brown? You can’t help what you like, you just know you like it.”

“And you like… mares as big as me?”

“A lot...”

“Doesn’t it make you feel like…” Jennifer started, searching for the words to ask if it made her brother feel emasculated. “I could pick you up with one arm. Easily.”

“I know. That’s great...”

Matt saw the look Jennifer was giving him, a mixture of incredulity and surprise and realization, mixed with something he couldn’t quite place.

“So I guess,” he continued, “when we were… I mean, you know, on Halloween, at the party… when I didn’t know it was you, I couldn’t believe how lucky I was to be with a mare who was as big as you. Like when we were...”

He paused before he decided to just say the words.

“When we were… having sex… and you were on top of me pinning me to the bed, and your boobs were in my face, like I was buried underneath you, and you had your big hands around me… that was the hottest thing ever.”

Another moment of awkward silence passed.

“I’m sorry Jennifer I...” Matt continued, turning away again.

“No no, don’t be sorry,” Jennifer said, cutting him off. “We’re being honest with each other. That’s good. I think I get what you’re saying, about everyone liking different things and no one can help what they like? I think I understand. It’s just no one’s ever said that kind of thing to me before, thinking I’m… ‘eleven out of ten.’”

“Well… I’m saying it. And I mean it,” Matt said, turning back to Jennifer.

“I know. And I believe you now. I’m… learning a lot about you.”

They smiled at each other for a moment, both realizing that the time of hiding from each other was over, that the last few years of animosity between them was done. Something new was beginning for them, something new and exciting. They could both feel it.

Jennifer was feeling something else, too. For the first time she could remember, since they were little kids, she felt like she was connecting with her brother on a personal level. They’d been distant for years – and for years more she’d been antagonizing, demeaning, mean to him. He didn’t deserve that.

He deserved more.

A strange, perverse thought entered her mind. Maybe it was that she was seeing Matt in a new light, less as a dorky little brother and more as a partner with whom she shared a dangerous secret. Maybe it was the simple fact that he seemed to genuinely think she was attractive and complimented her looks. Or maybe it was just that she was truly an insatiable, endlessly horny nymphomaniac who hadn’t had a cock inside her in a month, knowing that the best she’d ever had was sitting right there. The fact that it was attached to her brother didn’t matter; the taboo of incest even made it more exciting, if anything. And they’d already done it once, so what did it matter? Besides, she was already pregnant, and she knew for a fact he was clean. There was no harm left to be done.

“Hmmmm...” Jennifer sighed in an exaggerated, wistful tone, still smiling, as she stretched her legs out on her brother’s bed. She rolled over as seductively as she could on the bed that was much too small for her immense frame. It creaked and groaned as she did her best to appear alluring in the plaid pajama pants she was wearing, but after a moment she was laying on her stomach.

Her long equine nose was now buried against Matt’s pillow. His scent permeated it. It was subtle, masculine but not strong, familiar but with a hint of promised debauchery. She inhaled deeply, breathing it in, unable to place it but wanting more. She didn’t realize it, but her subconscious mind did – it was the same aroma that she smelled on Halloween night, the colt she thought was Brad who gave her the ride of her life. Even if her mind couldn’t place it, her body knew exactly what it meant.

Matt watched his sister struggle to flip over from her back to her stomach, but once she did he was in awe. Sitting at the foot of the bed as he was, her hooves were on either side of him hanging off the edges. He heard her breathe in heavily, and as she did her immense, thick ass lifted just a few inches off his bed, and her tail lifted a few inches more. Even through the red plaid pajama pants she was wearing he could see the unmistakable outline of her plump, teardrop-shaped pussy.

“Soooo,” Jennifer said, turning her head slightly to look over her shoulder, “you’ve got an eleven out of ten mare laying on your bed, no one else in the house. Like, just hypothetically, if she wasn’t your sister… what would you do? What if you weren’t her brother… just some guy that is a lot cuter and sweeter and nicer than she ever realized, and she was giving you a chance to score?”

She couldn’t believe she said it even as she was saying it. But when she saw her brother’s jaw drop – when she saw him turn his body and saw the huge bulge in his pants, she didn’t regret it.

“What would you do, Matt,” she whispered, lifting her ass higher off his bed. “Would you take that chance...”

With a mixed sense of familiarity and unreality, Jennifer watched her brother turn entirely towards her. She could see the outline of his cock down the leg of his cargo shorts as he shuffled on his knees between her spread legs. Her tail swished to one side and she felt her pussy wink, an involuntary and clear indication of equine arousal. She knew that as tight as her pajamas were and with her ass raised up, it would have been impossible for her brother to have not seen it.

She felt one of his hands on her flank, beginning to pull down her plaid pajamas. She lifted her ass higher and pushed back, unambiguously presenting herself to her brother. She heard him unzipping his loose cargo shorts...

“Kids! We’re back home!”

Matt suddenly found himself flying off his bed. Just like Halloween night he sailed through the air before crashing to the floor. Jennifer’s muscular, powerful legs had thrown him off his bed, an unintended casualty as she scrambled to get up and back to her room before her mother got suspicious.

Jennifer paused in the doorway leading to the bathroom and back to her room.

“Shit, Matt! Are you okay?”

“Y-yeah...” Matt answered, wincing, but seeing the genuine concern on his sister’s face. “I’m fine, just...”

“Kids? What was that noise?” Their mother’s voice called again from downstairs, closer now and clearly coming up the stairs.

“Sorry!” Jennifer said in a hushed tone. She lingered for a few seconds more in the doorway as Matt started to rise to his hooves, making sure he was okay before darting back into her room.

“Matt? Are you all right? What was that noise?” he heard his mother call from the hallyway outside his locked door. His chest hurt from the unexpected flight and crash landing he’d just endured, but he was still able to leap up from the floor towards his door. He heard his mother try to turn the doorknob just as he got there.

“It was my Pretendo. I was… I accidentally knocked it off the table,” he blurted as he cracked open the door, looking up at his mother who was more than a foot taller than him. She still had her hand on the knob.

“Oh. Well, just be more careful with your things,” his mom replied, seemingly satisfied with his answer. “Anyway, we’re back. We had to go to several stores to find one that was open but we found some propane for the fryer. You should come down and spend some time with your aunt and uncle. They’re leaving tomorrow, you know.”

“Okay, mom, I’ll be down in a second...”

“You’re spending too much time cooped up in your room lately anyway, Matt.”

“Okay mom, just give me a second to get ready and I’ll come down...”

His mom’s eyes darted to his pants. Matt saw them flit down, then immediately back up, almost as if she was trying to pretend she hadn’t done it. What had just happened with his sister had left him with a full erection, and it was impossible that she didn’t see it. He wasn’t even sure that the flat head of his equine cock wasn’t hanging out the bottom of his shorts.

“Ah… all right. Just don’t take too long. And don’t lock your door. You don’t have to hide anything from me,” she said in a knowing tone.

“Mom… I wasn’t...” Matt started, fumbling his words.

“It’s fine Matt, all boys your age do it, you don’t have to feel ashamed.”

“Mom!”

“I’m always here for you sweetie, I love you no matter what, you know that. You can always talk to me about...”

“Mom! Please!”

“All right, all right. Just come downstairs soon, okay?”

“Yes, ma’am.”

Matt’s mom gave him a warm, loving smile before turning to head back down the hallways and down the stairs to the living room.

Matt shut his door, pressing his forehead against it and closing his eyes, his ears splaying back flat against his head, his cheeks blushing under his fur. Embarrassment, confusion, excitement, fright, and a hundred other emotions coursed through his mind. 

- - - -

Matt tried to put the events of the morning behind him when he left his room and act as normal as he could around his family. For the most part he was successful, and aside from a few awkward moments the rest of the day proceeded like every other Thanksgiving for the past several years.

Uncle Bob nearly set a fire frying the turkey – something of a tradition – but somehow he managed to cook it perfectly. They all spent most of the afternoon playing board games, and Matt even forgot the craziness of that morning several times just having fun with his relatives.

The best part was that the events of that morning seemed to have cleared the air between him and Jennifer, and not just as it related to what happened on Halloween night. For the first time in years they weren’t at each others’ throats. Quite the contrary, their mom noticed that they were getting along like they were best friends, clearly having a lot of fun playing games with everyone else when in years past they would barely speak with each other. Uncle Bob chalked it up to them growing up and maturing, but their mom wasn’t so sure. It seemed so sudden, and she couldn’t place her finger on exactly why. Still it was nice to see her kids being nice to each other for a change.

For Matt’s part the most awkward moments of the day weren’t even with Jennifer, they were with his cousin Ellie. Late in the afternoon, not long before Thanksgiving dinner, Ellie asked Matt if he could show her how to play GoldenRye on his Pretendo 64. Matt jumped at the chance; no one in the house cared about video games except him, and he relished the opportunity to share his GoldenRye prowess. He figured if anyone else would love playing video games it would be his tomboyish cousin Ellie though.

When they got to his room he sat on the edge of the bed, but his eyes widened as Ellie shut the door, turned on the console and sat right in his lap instead of next to him. She explained it would be easier that way, with Matt’s arms wrapping around her to hold the controller while he taught her to play. But even after she took the controller herself (and played remarkably well, Matt noticed, almost as if she’d played before) she didn’t move from Matt’s lap. After a moment she told Matt to rest his head on her shoulder so he could watch her play, and to hold on to her hips so he would be more comfortable. It made no sense to Matt when they could just sit next to each other, but with his 14-year-old cousin’s butt in his lap he didn’t make any attempt to change positions.

Almost as soon as she’d sat down Matt could feel himself starting to get aroused, his equine shaft growing steadily and creeping down his pant leg. Ellie was like his twin in a lot of ways, almost like a female version of himself. They were the same height, had the same gray and mottled white coat, were nearly the same weight and had faces that were almost identical. If she wore the right clothes you could barely tell them apart. Her boobs – such as they were – didn’t even give her away if she was wearing a tight shirt. Ellie had inherited the same small breasts that her mother possessed, and even at age 14 they were just beginning to bud so that she was almost flat-chested. She was so much different than Jennifer in almost every way, in body and in personality, but for the first time Matt was seeing her as a girl rather than a playmate.

Matt couldn’t tell if she was doing it on purpose or not, but as she was playing the game she seemed to be lightly bucking her hips every time she got hit, shot an enemy, turned a corner, or did pretty much anything other than sit still or move in a straight line. A part of him recognized that there was absolutely no way she didn’t feel the gigantic cock she was sitting on – she was teasing him in the most obvious, inexperienced way possible. As if moving on their own, compelled by the part of him that recognized that she was flirting with him, Matt’s hands slid on his cousin’s hips. He was feeling her now rather than simply holding on. Ellie kept playing the game, not saying a word or making any sign that she didn’t want Matt to keep exploring as his fingers slipped over her trim stomach to the waistline of her pants, then into them, then underneath the lace of her panties…

“Kids, it’s ready! Come down and eat!”

Ellie paused the game and hopped off Matt’s lap, spinning so fast that her tail smacked into the table on which the Pretendo 64 was sitting. The table wobbled, first one way then the other, before the Pretendo slid off, crashing to the ground with a bang.

“Oh no!” Ellie exclaimed, the television screen going black.

“Matt? Are you okay?” his mom’s voice called up again from the bottom of the stairs.

“It’s fine! Knocked the Pretendo off the table again!” He called back.

“Be more careful with your...”

“I know Mom!”

Ellie had already picked the gaming console off the floor and put it back on the table. She flipped the power switch and it turned on like nothing had happened.

“Oh my god, I thought I broke it...” Ellie said with a sigh of relief.

“Don’t worry about it, I knock it off all the time. The Pretendo is... een-veen-see-bull!!” Matt answered his cousin playfully, imitating Boris’s line from the movie the game was based on.

Ellie smiled playfully at her cousin. She wondered if he got any of the hints she was dropping when she was sitting on his lap. His hands starting down her pants seemed to indicate that he did. So did that boner she felt through his pants – jeez, was it really as big as it seemed?

But she wasn’t sure. He’d always seemed oblivious to this kind of thing – he hadn’t picked up on all the flirtatious clues she’d tried to drop when she visited for Thanksgiving and Christmas last year, or the year before, or ever. Should she just tell him, lay it all out? How do you tell your friend that you’ve known your whole life, your cousin, that you’ve had a crush on him since you were both five years old? Is that even something you should tell him, or anyone? Is that the kind of deep, dark secret you keep with you to your grave?

“Well… thanks for teaching me to play GoldenRye. We can pick up where we left off after we get turkey!” she said with a wink.

Her face wrinkled in a cringe after she turned away from Matt. Did she really just wink at him? Who does that?

But then she remembered she’d winked at him once already, right around the time his fingers were inching down her panties –  and it hadn’t been with her eye.

- - - -

Besides a few coy glances from Jennifer, Ellie and, bizarrely, his mom, Thanksgiving dinner was pretty uneventful for Matt. Uncle Bob told the same tired stories he did every year, Aunt Lindsey tried to interrupt him from telling some of the less family-friendly ones, and Ellie expounded on how weird she thought the texture and consistency of cranberry sauce was.

After dinner they played more games, then settled into the living room to watch a movie, which was another tradition for these visits. Matt somehow found himself on the loveseat with Uncle Bob while his aunt, his mother and Ellie were on the sofa and Jennifer was sprawled out on the floor. Half of them fell asleep in the dark room before the movie ended – including Uncle Bob, who started snoring before Aunt Lindsey asked Matt to nudge him with his elbow.

By the time the movie ended it was getting late. There was no spare bedroom in the house so they had to make do with what they had available to accommodate their guests. Jennifer was just too big to sleep anywhere other than her own bed, so Matt had to give up his own bedroom for his aunt and uncle to sleep there. That meant that both he and Ellie had to sleep in the living room, and since he didn’t want his cousin to have the worst spot he let her sleep on the sofa while he took the loveseat.

Ellie heard him tossing and turning for a good half-hour after they went to sleep. Matt may have been short, but his feet and hooves still hung over the armrest of the loveseat no matter how he tried to position himself.

It wasn’t just the furniture that was keeping Matt up, either. He kept running through the events of that morning: talking to Jennifer about what happened a month ago and how he couldn’t shake the feeling that something was about to happen again. Just thinking about it had him rock hard. That was a problem though, since he was too horny to sleep and he didn’t want to jack off lying on the loveseat in the living room just feet away from him cousin, who almost certainly would hear him. Plus there would be the mess… how would he clean that up?

He tossed over again noisily and buried his face in the cushions, trying to forget about Jennifer so his erection would go away and he could get some sleep.

“You okay over there Matt?” Ellie whispered.

Matt’s equine ears twisted back and he turned over again. The sofa and loveseat were arranged in an L-shape, and both he and Ellie were laying so that their heads were at the inward edge, just a foot or two apart.

“Yeah. Just… can’t get comfortable,” he answered back, speaking softly instead of whispering.

“We could switch if you want,” Ellie offered.

“No, that’s okay. Thanks though.”

“Do you want to get under the blankets with me? We could share the sofa, I think there’s room for both of us,” Ellie offered, cringing again at her own forwardness as soon as she said it. Matt may have been oblivious to all her advances so far, but she didn’t think it would be possible for him to not see this one for exactly what it was.

“No… I don’t think that would work, the sofa’s not that big,” Matt answered, proving to Ellie that he could, indeed, be even more oblivious than she thought.

A few seconds passed before Matt spoke again.

“Hey, Ellie?”

“Yeah?”

“Can I ask you a question?”

“Sure, shoot.”

“It’s about… girls.”

Ellie’s eyes widened, though in the darkness she couldn’t see anything. She lifted herself up slightly, resting her chin on the sofa’s armrest. She was so close to Matt that she felt her lips brush against his pointed ears as she turned to him.

“Okay...” she answered meekly, almost directly into his ear.

“Promise you won’t tell anyone?”

“I promise,” Ellie whispered.

She heard Matt sigh heavily before he spoke.

“Okay, so… there’s this girl that I like. But, I’ve known her for a long time. Like, a really long time. And I never really realized that I felt like that about her until… recently.”

Ellie could feel her butterflies in her stomach. It was clear to her that Matt was talking about her. He had to be. Who else could he be talking about?

“But I don’t really know how to tell her that. It’d be weird because we’ve known each other for so long. And I’m not even sure she feels the same way about me. It’s like… I dunno how to explain it. I know she didn’t always, but I feel like something changed.”

“She feels the same way about you,” Ellie heard herself saying.

Matt leaned up on his elbow, propping himself up the same way Ellie was on the armrest of the loveseat.

“How do you know?” Matt whispered.

He was so close that Ellie could feel the heat from his breath as he spoke.

“I just do. It’s a girl thing. If you’re even asking, she does,” Ellie whispered.

“So… how do I tell her?”

“You probably already have, one way or another,” Ellie answered, speaking slowly, trying to guide Matt to make the next move. “But sometimes the best way to tell her isn’t with words, you know? If you feel the time is right, but you don’t know what to say… just lean in and kiss her.”

“Really? That works?” Matt replied with a surprised tone.

“Yeah,” Ellie answered, whispering seductively, “that really works...”

Matt didn’t answer her at first, and Ellie was almost certain he finally, finally pieced together the blatant hints she’d been dropping all day. It was finally going to happen.

She closed her eyes, confident Matt was doing the same even though they couldn’t see a thing in the darkness. Ellie began leaning forward, knowing Matt was too, ready for the kiss that would start so, so much more between them. It was all about to begin…

“Man, I would have never thought of that, but that’s so crazy it might work!  You’re so smart Ellie, thanks for the advice! Good night!”

Ellie’s jaw dropped as she heard Matt turn back over away from her, burying his face again in the loveseat cushions and pulling his blanket back over him. How? How could he be that unaware?

“Actually,” Matt continued, turning over quickly and pulling the blanket off again, “I gotta pee.”

Ellie heard Matt’s hooves on the floor clopping away in the darkness as he unceremoniously, unapologetically ruined yet another of her attempts to seduce him. She was in such disbelief that she didn’t even move until Matt was already up the stairs. He was out of earshot when she pulled the pillow over her mouth and yelled into it in frustration.

- - - -

Matt really did have to pee. It kind of crept up on him – must have been those sodas he was drinking while they were watching that movie.

There were only two bathrooms in the house. One was Matt’s mom’s bathroom, which he never used, and he wasn’t about to try to sneak through her room to try to get to it without waking her up. The other bathroom was the one between his room and Jennifer’s.

Normally he’d just go through his room, but unfortunately his aunt and uncle were sleeping in his bed, and he felt weird about trying to creep past them, too. That left Jennifer’s room as the only route he could take to get to the bathroom.

Jennifer was still awake when she saw her bedroom door start to open, the pale moonlight filtering in through her window blinds providing just enough light to see clearly. She was wide awake, in fact – her hand had been down her plaid cotton pajama bottoms since the moment she was in bed, fingering herself vigorously as she thought about what happened earlier that day in her brother’s room. She’d been wet almost all day, catching herself several times staring at the obvious bulge in Matt’s pants and losing herself in the memory of what that bulge had done to her on Halloween night.

She stopped masturbating when she saw him enter her room and start creeping silently around her bed, but only briefly. Outlined clearly in his plaid pajama bottoms – identical to hers except for the size – was his mammoth shaft. Even as she tried to pretend to be asleep she worked her finger in and out of her sex, unable to keep her eyes off her brother’s bulge. Just as Matt was trying to remain quiet to get to the bathroom, she was trying to pleasure herself without making a sound.

Jennifer wondered why, as Matt finally made it to the bathroom and shut the door behind him, she had even bothered to pretend to be asleep in the first place. Maybe she should have just pulled him into bed with her. That’s what she wanted. Maybe she should do that when he came out of the bathroom? She mulled it over as she heard Matt’s pee splash in the toilet.

Matt, at that moment, was having trouble even making that happen. His dick was still fully erect, just as it had been most of the day. Trying to pee with a boner was proving difficult. He had to almost force it in long, strained spurts, but through effort he was able to fully drain his bladder. He considered just jacking off into the toilet right then so that he might be able to get some sleep without thinking about sex. He even started stroking himself, but he could hear Uncle Bob snoring from the other side of the door and it just made the whole thing weird, so he decided to just creep back through Jennifer’s room and go downstairs again to try to sleep.

Slowly he opened the door, trying to stay quiet. His eyes hadn’t fully adjusted as he took his first measured step into Jennifer’s room, his hoof falling softly on the carpet.

“I’m awake, Matt, you don’t have to tip-hoof past me like a little weirdo,” Matt heard his sister say.

“Sorry... I had to pee, and I didn’t want to go to mom’s bathroom, and I didn’t want to wake up Aunt Lindsey and Uncle Bob. I didn’t mean to wake you up,” Matt whispered back to Jennifer.

“You didn’t wake me up,” she said, leaving off the reason why she wasn’t asleep.

“You have trouble sleeping too?” Matt asked.

“Yeah. Just… everything,” she said. Matt thought he understood what she meant, but he only understood part if it. Jennifer still had no idea how she would tell her dorky 14-year-old brother that she was pregnant with his foal. She tried not to think about it – it was so much more fun to think about how it happened than what it meant for their future.

Matt’s eyes had adjusted to the dimness of the room. Unexpectedly he saw that Jennifer wasn’t laying down under the covers but was instead sitting on the edge of it, more or less facing towards him. She was only a few steps away from him.

“Hey… Jennifer?” Matt started, taking those few steps to close the distance between himself and his sister. Jennifer could sense his nervousness, though she couldn’t yet pinpoint the cause.

“Yeah?” She answered in the most friendly, receptive way she could. Almost subconsciously she spread her legs slightly.

“This morning, in my room,” Matt said, “you asked me...”

He paused for a moment, gathering his nerve.

“...you asked me what I would do if there was an eleven out of ten mare in my bed. If she was giving me a chance with her. What I would do.”

He took a final step towards her. Even sitting on her bed, Matt still had to look up slightly at his sister’s face. Jennifer’s pajama-clad legs continued to part, almost inviting Matt to come closer and slide between them. Before she knew it he had sidled between her knees.

“Yeah...” she said again to her brother, this time demurely, almost seductively. “Do you know what would you do...”

“I’d...” Matt squeaked.

Seconds ticked by. Neither of the siblings moved a muscle. Matt opened his mouth, but no words came. And when no words came, he remembered the advice Ellie had given him just minutes before.

Matt effectively lunged at his sister, kissing her in a sudden surge of confidence that surprised them both. There was an instant of hesitation on Jennifer’s part, a fraction of a second where the memory of all those years where she hated her brother screamed at her to push him away, throw him across the room like she had when she realized it was him on Halloween night.

But that hesitation was gone the instant she felt Matt’s tongue in her mouth. At that moment her body overrode her mind, slipping into the state of single-minded sexual desire she’d been in when she fucked countless other guys in her high school. Her promiscuity and willingness to spread her legs for almost anyone at Chester P. Hooferton High was what kickstarted her failed attempt at popularity. From the first time she fucked she was hooked, addicted to cock, and her body was telling her that she had a colt with the biggest one she’d ever seen between her legs. That it was her own brother didn’t register at all. After a month without sex she wasn’t going to let this one get away.

Matt felt his sister’s immense hands wrap nearly all the way around his chest. Jennifer leaned back onto her bed, pulling Matt down with her and on top of her. Almost before they even landed on her soft pink bedspread her hand was already sliding down her brother’s body, and by the time they were on the bed it was down to his pants.

Without breaking their kiss she greedily felt the bulge in her middle-school-aged brother’s plaid pajama pants. She gently squeezed and kneaded her brother’s gigantic balls. It was almost unbelievable – earlier she’d told him that they were like oranges, but through his pants they felt even bigger than that. No wonder he’d pumped so much into her Halloween night.

Her hand moved on its own, feeling Matt’s fully erect cock through the cotton pajamas and wrapping around the base of it. She could feel the heat through the fabric as she traced it down his thigh, the slight ridge and flat end reaching just below his knee.

“Oh my god... you’re so fucking big...” she whispered as she broke their kiss. Matt leaned forward to try to kiss his sister again, but she was already past that stage; she wanted his cock, nothing else, and she wanted it now.

Matt felt his sister’s thumbs on his stomach before they slid underneath the elastic waistband of his pajama-bottoms. Without so much as an instant of hesitation she pulled them down. Matt’s pants were down around his knees before he knew it, but this still wasn’t low enough for Jennifer to free the entirety of the horse’s black 14-inch shaft. Jennifer didn’t wait for him to lift his knees off the bed; Matt could feel his body rising into the air, his sister lifting him with one arm while she freed him from his pants with the other hand.

Matt’s shaft rebounded the moment his cock-head cleared the elastic waistband, slapping against his stomach with a loud clap. As it swung in its 180 degree arc from down his pant leg it splashed precum all over Jennifer, a trail of drops running up her own matching plaid cotton pants and coating the tight T-shirt she was wearing, her habitual sleeping attire. Some of it had even splashed against her face, a few droplets landing on her nose.

She was looking straight down the barrel of her brother’s cock now, the biggest she’d ever seen and the tool that had put the foal that she was now carrying inside her. She could see the dimpled ridge across the top of the flat head, and from the bottom portion she could see a copious amount of precum continuing to dribble out of his urethra. It was like a leaky faucet dripping right on her shirt between her breasts.

On instinct Jennifer began stroking it. In the dim light she could see the pink splotches on the mostly black shaft, something she found erotic for reasons she couldn’t explain. After a few tugs she wrapped her fingers around her little brother’s glans, letting the precum coat her palm and start to run down her arm. As she did she noticed that Matt’s had let his own hands wander, sliding under her T-shirt.

“You’re… so big… too…” Matt whispered as he groped his sister’s midsection, her abs well-defined and easy to feel. It was incredible to him that a mare as big as his sister could also have such a tight, toned body, so much more so than his own. He wanted to explore every inch of it.

Jennifer balked for a moment when he heard Matt call her ‘big,’ but then she remembered what he’d said about how much he loved her body proportions. Based on his roaming hands, the lustfully awestruck look on his face, and the throbbing cock that was dribbling precum all over her shirt, Jennifer was finally willing to accept that he was telling the truth. He really did think she was an eleven out of ten.

“You like big girls, yeah?” She whispered teasingly, stroking Matt’s cock faster.

“Yeah...” Matt whispered back, almost in a daze.

“Mmm, yeah you do...” she teased with a mischievous grin, gliding her precum-covered hand down the length of Matt’s shaft, past his medial ring and to the base. She fondled his bare balls for a few seconds, still almost in disbelief at their size.

In a quick motion Matt saw his sister cross her arms and lean her head back, long equine snout hanging off the opposite side of the bed due to her nearly 8-foot height. She was pulling her T-shirt off; before Matt realized it she had the shirt up and over her head, her equine ears snagging momentarily before she casually tossed the shirt to the floor.

“Holy fuck...” Jennifer heard her brother whisper. She bit her lip trying to contain her giddy smile – for all the dozens of colts she’d fucked in the two months between the football game and the Halloween party, none of them had ever looked at her the way her brother was right now. His gaze was fixated on her now-exposed breasts with an almost awestruck single-mindedness. 

“You like these?” She asked coyly, pressing them together.

Matt neither answered nor took his eyes off his sister’s breasts. His hands trailed up her abdomen, over her abs and belly-button, her dappled gray coat the exact same color as his own and their mother’s. When he reached Jennifer’s soft, round boobs he squeezed them, gently, before closing his eyes and leaning down. His black lips encircled his sister’s black nipples of the same hue.

“Mmm, yeah, you love my titties… suck on them...” she whispered into his ear, now next to her face.

Matt remembered Halloween night, that perfect experience with the gorgeous mystery mare, the sex goddess that had dragged him into bed and given him the time of his life. He knew it was his sister after it happened, of course, but the way she was talking to him now – horny and dirty and full of immediate sexual need – allowed him to really connect the two experiences.

Jennifer felt her brother start to gently thrust into her pre-cum soaked hand.

“Oh my god… Matt...” she whispered in his ear.

Matt opened his eyes and lifted his body up off his sister’s, a tendril of saliva connecting his mouth to her nipple for a moment.  They had the same idea at the same time – Jennifer slid her hand underneath Matt’s T-shirt. He also wore T-shirts to sleep in, though his were as loose and baggy as Jennifer’s were tight. Half of the ones he wore were hand-me-downs that used to belong to her before they got too small, and she recognized the one he was wearing as one she used to wear when she was much younger.

Matt pulled it off and tossed it aside while Jennifer’s hands wrapped around his body. Their eyes met in the moonlight, the realization dawning on them at the same time that Matt was now completely naked, his gargantuan cock flopped across his topless sister’s stomach, pre-cum dribbling on her bare chest with her legs spread wide.

Jennifer groped up her brother’s body, past his ribs to his chest. She rubbed her thumbs on his soft black nipples. His entire body was so soft. It was so much different than the hard muscle and testosterone of the football players she’d fucked – and she’d fucked almost the entire team, if she was honest. But her little brother’s body was soft and warm and comforting, cute and cuddly and sweet, almost like a Teddy bear.

A Teddy bear with a 14-inch cock.

Her strong hands went back down his soft body. One slunk behind him, squeezing his cute little butt, while the other went back to the long, hard part of her brother’s body she loved best. He was rocking his hips, and Jennifer could feel the heat from his shaft through her pajama bottoms – the only piece of clothing either of them were still wearing. Matt’s cock was sliding between her legs, grinding desperately against the thin cotton separating it from his sister’s sex. They were both ready to let it in.

“Oh my god... I want your cock so fucking bad...” Jennifer whispered, the same as she had to all those football players. She wasn’t thinking about the consequences then or now – only sex.

Together both Matt and Jennifer gripped the elastic waistband of her plaid pajama bottoms – the ones their mother bought as a matching pair with the ones Matt had already tossed aside. Unceremoniously and hastily they pulled them down together, exposing Jennifer’s light mottled gray hips and legs; exposing all of her. A pull, a tug, a kick, and Jennifer was just as naked as the 8th-grader colt she had nestled between her legs.

As one of her hands went back to his cock and the other went to his hips, Jennifer saw the unmistakable look of total surrender to lust on her brother’s face. His eyes were locked on her bare pussy, the black lips matching perfectly the color of his cock and contrasting with the light mottled gray of both their bodies.

“This what you wanted to see? Peaking under the bathroom door at your sister? Hmm? Catch a glimpse so you could jerk off like a little pervert?” 

Jennifer was rolling her own hips now, gyrating slowly in a kind of circular, teasing motion. She was stroking Matt’s absurdly long cock up and down, coating her hand completely with the constantly dribbling precum. It was mixing with the natural lube she was producing – she was positively soaked, so much that her juices were dripping down to her black, donut-like tailhole, past it to her tail and pooling on her bed.

She was also winking uncontrollably, something Matt noticed much more than she did. Every few seconds he saw her thick black pussy-lips spread, exposing the pink inside as her clitoris convulsed. There was no clearer sign of female arousal for hprses, and no doubt for either of them what was about to happen.

“Yeah...” Matt whispered in response, almost in a trance.

“You think about this when you jerk off? Yeah? You think about fucking your own sister?”

Jennifer pressed her brother’s immense cock flat against her slit, the shaft sliding across the area where her flesh transitioned from black to pink.

“Yes… Jennifer...”

“You want to fuck your sister? You really want to fuck your big sister? Huh, little pervert?”

“Yes… please, I can’t...”

Jennifer edged back as her brother spoke, her hand wrapping around her brother’s glans. She had to guide this monster in like she had Halloween night, but this time she had the benefit of being able to see what she was doing. She lifted her hips slightly off the bed, Matt’s length gliding along her mons pubis and between the two puffy ridges of her pussy until the flat head was in place. At the moment they were aligned, her grip on her brother’s butt tightened and she pulled him into her.

“Ahh… hahh...” Jennifer heard her brother exhale as his girth slid into her inch by inch.

“Mmm...” she moaned, her eyes closing in an expression of carnal satisfaction. Her huge, strong hands went to Matt’s soft body again, wrapping almost entirely around his cute little frame. The sounds he made as he began to thrust into her were undeniably adorable – little high-pitched trills that came each time he rocked his hips, like he was opening a present on Christmas morning. There was something about spreading her legs for a colt a third her size – and not even old enough to be in high school – that she found perversely arousing. The fact that it was her brother certainly added to that feeling of forbidden excitement, like she was getting away with something unspeakably taboo.

Matt, for his part, wasn’t thinking about any of that. This was only the second time he’d ever had sex, and the first time where he could actually see what he was doing. As soon as he’d felt Jennifer’s gigantic hands enveloping his body his mind went blank. The simultaneous feeling of being in control on top of a huge mare and being vulnerable, gripped in her powerful hands, overwhelmed him.

“Hahh… ahh… hah...” Matt squeaked as he started humping faster, progressively pushing further into her. He was mesmerized by the sight of his own cock plunging in and out of his sister’s fat, puffy pussy, seeing the pink splotches on his black shaft disappear and re-emerge from her folds, feeling her warmth from the inside. She was still winking, even while being fucked, and every time she did Matt could feel the surging spasm of her vaginal walls clamping down.

“Yes… fuck yes… just like that… fuck my pussy… fuck your big sister’s pussy...”

Jennifer was always extremely vocal in bed, as Matt had learned, but he didn’t speak a word. He was progressively thrusting deeper and deeper into her, and now more than half of his 14-inch length was staying inside Jennifer between thrusts. The slick precum that had been dribbling onto her was now flowing freely into her.

Matt shuffled on his knees to get even closer, fucking his sister deeper and deeper. His arms had been draped over her immense, muscular thighs that straddled his body, each one about the same size as his entire torso, but now Matt leaned forward with his hands tracing through her short gray fur to her hips. From there they went momentarily to her stomach, feeling her abs again – still unaware that just inches away was the growing life conceived between them on Halloween night – before gliding up her body. He still couldn’t get over just how massive she was, his relatively tiny hands having to move in wide arcs to grope her body while hers almost fully encircled his waist.

Finally his roaming fingers completed the journey up Jennifer’s body to her breasts. Just like the rest of his sister’s body, Matt thought they were perfection; large but not too big, perky like an 18-year-old mare’s should be, and with large, pointy nipples with big, black areolae. He was fucking her hard enough now that they were bouncing in time with each thrust. He grabbed hold of both of them tightly, not exploring them as he had with her body but just gripping them firmly, each hand clasped on a nipple.

“Ohh, Matt...” Jennifer moaned, his sudden dominance pressing another perverse button in her, the act of surrendering her robust, powerful body to a scrawny, horny 14-year-old being a kink she never knew she had.

“Yes… grab my titties… feel them… yes… fuck yes… you love it…”

Now it was her hands that trailed down Matt’s body, her left hand again tracing the smooth contour of his cute little butt, feeling it flex every time he slammed into her. Her right hand went down Matt’s stomach, down to his cock. It was like that little butt of his was on autopilot, not slowing his pace in the slightest as she slipped her fingers around his leathery, veiny black cock. It was unbelievably slick, dripping with their combined juices as it slid in and out of her. She’d fucked dozens of other guys, Matt was still the only colt she’d ever let fuck her raw without a condom. Latex could never compare to the feeling of bare flesh, black on pink, and she couldn’t go back. She was addicted to her brother’s raw cock.

“Dirty boy… yeah… you like fucking your big sister… sneak into her room and fuck her in her own bed… fuck her pussy… yeah… nasty boy… so nasty… fuck her good…”

With every thrust Jennifer felt her brother’s gigantic balls smacking into the back of her hand. Such an enormous pair, such a huge cock attached to such a cute little colt…

“Oh god… oh fuck, Matt...”

The pressure was building inside her, the familiar tickle that would grow into a churning, writhing orgasm in seconds. She looked down her body and couldn’t help but focus on the base of her brother’s cock, where the coloration changed from the light gray of his dappled coat to black. Her hands went again from his balls up his body, grasping him tightly around his bucking waist. Her arms were the same dappled gray as his body, his nipples the same black as hers, traits they both inherited from the same mother and father.

“Yes… right there… don’t stop… don’t stop baby… don’t… fuck… fahh… Nnnnnhhh!!”

Matt felt his sister’s vaginal walls tighten around his cock as Jennifer reached her crashing orgasm. She arched her back and threw her head back in ecstasy, one of her hands shooting to her mouth to try to muffle her moan. That was of little importance though – her leg jolted and her hoof smashed the headboard of her bed against the wall loud enough so that anyone who was awake upstairs would have been able to hear it.

“Nnnhhh!! Nnnnhhh!!”

He didn’t slow down through Jennifer’s climax – if anything he sped up. He was close to cumming too, spurred on by the rolling vaginal contractions massaging up and down the length of his shaft, like Jennifer’s pussy had a mind of its own and was working independently to coax the cum out of him.

It was close to succeeding, but he wasn’t vocal in bed like his sister was. Matt was close, but just like that night a month ago he had no plan to tell her when he was going to cum. He was just going to do it.

“Ahh… hahh… oh god… oh fuck, Matt...”

As she came down from her orgasm she could feel her little brothers thrusts getting more ragged, less smooth and controlled. She knew then that he, too, was getting close to cumming, and that if his performance Halloween night was anything to go by she knew exactly where he planned on finishing.

Such a naughty boy, she thought. She’d been mortified when he’d filled her cunt with that unbelievable amount of cum Halloween night; even after 20 minutes in the shower trying to wash it all out, more just kept oozing from her. But something in her mind had switched. Her brother wasn’t the dorky loser she thought he was back then, he was a cute little colt with a mammoth cock who genuinely thought she was beautiful. The prospect of her brother’s 14-inch cock flaring inside her and pumping half a liter of cum into her womb didn’t seem horrifying now. It seemed hot as fuck.

Matt was on the edge of doing just that when Jennifer wrapped her arms around him. He was powerless to offer even the slightest resistance to the 350-pound, 8-foot-tall shire horse he was fucking as she held him close and rolled over on her bed. She was careful not to put too much of that weight on him as she flipped over so that she was on top of her brother – just enough for him to know a massive mare was riding his dick, but not enough to be uncomfortable.

Jennifer’s raised, flagging tail swished unconsciously as she lowered her hips down, taking Matt’s shaft all the way to the hilt. Her pussy winked as she started bouncing on it.

She lowered her body gently down on Matt, her boobs at face level for the much shorter and smaller colt. She could feel his hands gripping her hips tightly as she bounced faster, her bare ass raised up and facing directly at the door to the bathroom she shared with her brother.

“This how you like it, baby? Pinned down with your big sister riding your cock? That’s ‘the hottest thing ever,’ you said...” Jennifer whispered down between her breasts into Matt’s ear, “show me how much you love it. Show me… cum for me Matt… cum for me...”

He had been so close before Jennifer flipped him over, and now he was just a breath away, but there was just a tinge of hesitation. He’d thought about it every day since Halloween: what if the unthinkable had happened? What if he’d impregnated his own sister?

What if he hadn’t then, but he was about to now?

“Jennif… if I...” he squeaked out.

“It’s okay… it’s a safe day…”

Matt didn’t need to know that the reason it was ‘a safe day’ was that he had already knocked her up the very first time they’d fucked. The damage was already done, Jennifer figured. She would tell him later. In the meantime, what did it matter if he came inside her again? What did it matter if he did it every day from now on?

“It’s safe… it’s safe, baby… cum inside me… cum in my pussy…”

Matt didn’t need any more convincing than that.

As expected, Jennifer didn’t hear any response from her brother. But she felt it. Matt’s fingers dug into her, tightly clenching her meaty, child-bearing hips that were easily three times wider than his entire body. He lifted his own butt off the bed and his relatively small arms tried to pull the giant of a mare down onto him. Instinctively Jennifer’s body knew how to respond, the deep and primal sexual impulse to mate with this little colt – her own brother – commanding her every muscle. That she had already been bred by him and was already pregnant with his foal didn’t matter.

Jennifer stopped bouncing and dropped her hips down onto Matt, taking the entire 14-inch length of her brother’s black cock to the hilt. Her hands wrapped around the back of his head, the soft black hair of his mane entwining her fingers as she squeezed him tight.

She felt it then, the ineffable sensation that she missed so much during her month of unwanted abstinence: the flare. Her brother’s cock-head began to swell, flattening and broadening from just under three inches wide to nearly six.

The flare deep inside her was a feeling she was used to from so many previous experiences with so many other colts. But what came next was an experience she’d only had once before. Every colt she’d fucked before her brother had worn a condom, and every one of them had filled the latex instead of her pussy. But Matt – such a naughty boy – had pumped his entire load into her, and the feeling had been sublime. It wasn’t comparable to an orgasm… it was more of a feeling of profound, rooted fulfillment, like a deep and basal need she couldn’t articulate had been met, like a burning fire was being quenched.

Matt’s body tensed. His hands squeezed his sister’s hips as tight as he could as his world exploded in carnal bliss.

“Oh my god… oh fuck Matt, yes…” Jennifer whispered in her brother’s ear as he ejaculated.

“Hnnh...” she heard him coo, barely audible, while she simultaneously felt the first thick jet of his hot cum pouring inside her.

“Yes… yes, baby… yes… just like that… just like that…” she whispered, pulse after ejaculatory pulse filling her fuller and fuller. She felt warm, contented, fulfilled, the reward center of her brain flooded with dopamine as her brother’s incestuous cum flooded her uterus, each throbbing stream hitting her like a drug.

She rolled her hips a few times as Matt’s powerful pulses petered off into progressively weaker and weaker spurts, as if her body wanted to greedily milk every precious drop of the life-creating liquid out of him.

“Mmmm, baby...” she lilted softly, looking down at Matt and lifting her upper body off his. She tried not to laugh when she realized his face had been buried between her boobs the entire time she’d been riding him.

Matt looked up, making eye contact with his sister and not looking away. It was so weird – a few weeks ago they hated each other. Just that morning they weren’t even talking to each other, both too afraid to confront what had happened between them Halloween night. But now everything was right between them. More than right. Their relationship had changed forever, and they both knew that this was just the beginning.

Schplop-gusshhhh!!

The flared head of Matt’s equine cock was returning to its normal size, and at that moment the seal it had created against Jennifer’s muscular vaginal walls failed. More than a third of the half-liter of cum he’d pumped into his sister gushed out of her pussy, pouring onto Matt’s balls and down his legs and soaking Jennifer’s bedsheets.

“S-sorry… Jennifer I,” Matt stammered.

“Shh, no sorry...” she answered in a contented whisper, “that’s how it’s supposed to be. Sex is supposed to be messy. You did good...”

Jennifer felt Matt’s hands sliding down her legs, then back up. No one had ever looked into her eyes the way Matt was right now.

“You’re so beautiful...” he whispered on impulse.

She grinned broadly. Matt’s simple sincerity did things to her she couldn’t explain.

“Mmm… you’re pretty cute yourself. For a little brother...” she teased, though she meant it just as sincerely. She was starting to think she liked smaller colts like Matt in the same way he liked bigger mares.

She let his hands explore her body freely for a few moments, down her thighs and back up to her hips, up her torso to her boobs and back down. She enjoyed him feeling her, wanting her, as much as he did.

“Did you really think it was good? I mean… truly? Do you mean it?” Matt asked, unsure of his performance with so little experience.

“Matt, you’re… eleven out of ten,” she whispered to her brother, the father of her unborn foal. “And you can have me any time you want me.”

- - - -

Lindsey couldn’t sleep. There was Bob’s incessant snoring, but she was used to that. The real issue was the bed. Whose idea was it for her and Bob to sleep in her nephew’s room, anyway? At first glance it looked big enough for both her and Bob, but it was just small enough for her to be uncomfortable, and just small enough for Bob to keep pulling the sheets off her in his sleep.

If only they could have gotten to use her niece’s bed instead of her nephew’s. That thing was enormous! But of course that wasn’t an option; she knew it was the only bed in the house big enough for her Jennifer to use.

Bang!!

Lindsey leaned up in bed; it sounded like something slammed into the wall from the direction of the bathroom that connected her nephew’s room to her niece’s. Lindsey’s long equine ears twisted to the direction she heard the noise from.

For a moment she remained still, listening intently. Bob’s snoring drowned out everything, but between snores she thought she heard something. It was coming from her niece’s room, and she couldn’t quite place it, but the more she listened the more she was sure it wasn’t just her imagination. It was definitely something.

Against her better judgment and without really thinking it through, Lindsey quietly slipped out from under the covers, careful not to wake Bob. Silently she tip-hoofed to the bathroom that connected Matt’s room to Jennifer’s, her ears still perked, trying to discern what the strange noise was.

Maybe deep down she knew what it was. A rhythmic squeaking, a muffled moan, a wet, fleshy plap, plap, plap – what else could it have been? But even as she crept quietly in the dark of the bathroom to the ever-so-slightly ajar door leading to Jennifer’s room, nothing could have prepared her for what she saw when she peeked through the crack.

Lindsey’s eyes grew wide and her jaw dropped. Her niece’s enormous, bare butt was facing directly towards her, tail hiked to expose her huge black donut-like tailhole and big, puffy pussy – filled with the biggest cock she’d ever seen.

She covered her mouth to prevent herself from gasping, realizing that her sweet 14-year-old nephew Matt was pinned underneath his sister, and she was riding his cock raw. Despite her shock, Lindsey couldn’t take her eyes off the slick black shaft pistoning in and out of the huge mare, pink splotches disappearing and emerging in regular intervals.

What should she do? This was incest! And they weren’t even using protection! What were they thinking? She had to stop it, right? Right?

But something else was happening to Lindsey, too. She kept one hand over her mouth, but the other went down into her panties. She knew she should do something, say something, anything to stop this from continuing, but there was something so arousing about the sibling’s coupling that kept her frozen in place.

Now the hand over her own mouth was to prevent her own sounds from being heard by her niece and nephew. Her fingers plunged in and out of her sex, a scant and inadequate substitute for the god-rod she was looking at. She felt a hint of jealousy for her niece, imagining what it would feel like to ride that monster herself.

All of a sudden she saw Jennifer’s gigantic butt drop down entirely on her brother. She was taking Matt’s cock in its entirety, right up to the hilt. His heaving black balls – also the largest Lindsey had ever seen – were pressed right up to Jennifer’s thighs. Then she saw them start to twitch. The very base of his cock, just barely visible and the only portion of his shaft not filling his sister’s pussy, began to pulse.

Lindsey did gasp when she realized what she was seeing. Her sweet, innocent little 14-year-old nephew was cumming deep inside his sister’s pussy. Raw. Totally unprotected. Did they not know how risky this was? How reckless? How could they not know? Jennifer would get pregnant for sure if they kept this up. Should she stop this?

But she couldn’t. All she could do was watch and finger herself. After a moment Matt’s pulses stopped, but her neice’s pussy kept winking in regular intervals. She gasped again when, without warning, Matt’s cum gushed out, an unbelievable amount flowing out of Jennifer like a jug of milk was being poured from her sex.

They stayed still for a while and Lindsey could hear them whispering, though she couldn’t make out what they were saying. Finally she pulled herself away from the unreal scene she’d just witnessed, tip-hoofing back to bed.

She pulled the covers over her, staring up at the ceiling trying to process what she’d just seen. Her husband in bed next to her was still sound asleep and snoring loudly.

Eventually Lindsey closed her eyes, trying not to think about the incestuous mating she’d just witnessed. But it was impossible. She was still soaked, still masturbating, unable to think of anything except her nephew’s cock pulsing inside her niece and the torrent of cum that poured out. That much cum would get anyone pregnant.

That much cum would get anyone pregnant…

A dark thought entered her mind. She loved her husband dearly, but Bob had never been able to give her the foal she wanted. Her only daughter Ellie was the result of a rather unfortunate experience early in her life, much before she met Bob. When they married she’d expected to have more kids, but now she was over thirty years old and it was clear that no matter how much they tried, Bob would never be able to give her a child, one that she desperately wanted.

But maybe Matt could…

No, she thought, sickened with herself for even thinking that. That’s incest! He’s just 14 years old! You’re his aunt!

But Bob’s coat was a similar coloration, only slightly darker. Bob wasn’t a Shire, but Matt was unusually small for one, so maybe their foal would be small too? Small, with the right coloration… Bob would never know it wasn’t his, and they’d have the foal they’d always wanted together. Who would be hurt?

No, she thought. That’s crazy. That’s crazy!

But it might work.

She’d have to think about this. She couldn’t believe she was thinking about this, but… it just might work.

They would leave in the morning, but they’d be back to visit her sister, her niece and her nephew again in a month for Christmas. If she was going to do it, that would be the time.

It wouldn’t be hard. She could easily seduce a horny 14-year-old. And if that didn’t work – well, she’d seen what he and his sister got up to. She could always blackmail him into it if she needed to.

It was crazy. It was outrageous. It was adultery – it was incest, for god’s sake…

But it just might work.