Stuc Inside My Sister
Taboo/incest Story

Stuc Inside My Sister

by Spector_dugan 17 min read 4.8 (487,100 views)
forced orgasm accidental penetration pregnancy ris brother sister creampie incest public
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This post will be/is/was to celebrate me reaching over 10,000 followers on Lit! My sincerest and most effusive appreciation to everyone who has been a part of this incredible journey. I'm beyond honored and humbled by your support.

I can think of no better way to celebrate this moment than with another very silly, sibcest story. As most of you are aware, I have a history of writing particularly dumb stuff. This is definitely one of those. Suspend all disbelief, ye who enter here.

I realize that none of what I'm about to tell you makes sense. Every iota of understanding I have about life, the world, and even human biology tells me there's no way this could have happened. But I swear that it did.

I was enjoying a lazy Monday morning. I'd spent the weekend home from the dorms to enjoy the standard 'free meals and laundry weekend.' I'd slept in because I was at an age (twenty-one years old, if you must know) where anything before 10am felt absolutely ungodly. The house was quiet in a sleepy, post-morning-rush kind of way.

It would have been a perfectly boring day, except I made one, seemingly benign, decision that would lead to disaster: I took a shower.

In his book,

Outliers

, Malcolm Gladwell wrote about how massive accidents happen. Rather than one catastrophic error, these calamities are caused by a confluence of smaller mistakes. What happened to me that day is an excellent example of this theory in action.

Error One: Despite the fact that it was already late morning, bright sun streaming through the windows, I was spacey from sleep and unaware of my surroundings. So, I didn't notice the lack of towels hanging in the bathroom. Instead, I turned on the water, got in, and luxuriated in the wet heat. I had at least an hour before I needed to head back to campus for class, and I took my time.

I'd never been athletic growing up and it had given me a certain amount of softness. Especially around the belly. But in college I'd befriended a couple student-athletes who'd shown me the way of better body care. I wasn't some shredded, swole, dude-bro, but better eating habits and a reasonable gym routine had left me in fairly good shape.

So, it was nice to look down in the shower that day and see defined biceps, strong pecs, and a flat stomach. I'd worked hard to get there, and I was proud of what I'd accomplished. My relatively recently acquired college girlfriend sure seemed appreciative of my efforts, as well.

After I shampooed my short brown hair, I took a razor to my face (never underestimate the benefits of a shower shave) and cleaned that up, as well. Finally satisfied (and a little overheated from the steamy water), I switched off the tap, opened the glass door, and reached for the non-existent towel.

Error Two: I'd actually made this mistake before the first one, but I hadn't realized it at the time. Like I said, the house was quite quiet when I woke up and so I assumed I had the place to myself. Not an unreasonable assumption. Both my parents worked and my younger sister, like me, had college classes that day.

So, rather than try to cover myself in some way, I simply stepped out of the bathroom, naked and dripping, to go and find myself a towel from the linen closet in the hall.

Which is when I realized that actually, no, I wasn't home alone at all.

As soon as I opened the bathroom door, I was made embarrassingly aware of my error. Standing in front of me, staring at my naked body with a look of undisguised surprise, was my younger sister, Madison.

Maddy was a girlish twenty (versus my far more mature twenty-one). Unlike me, she'd been an athlete all her life, a gymnast, and she still had the body for it. My sister was barely five feet tall and petite from her fingers to her toes. With a slightly upturned, freckled nose, sharp chin and huge blue eyes, her face could best be described as elfin. Madison kept her long, golden blonde hair tied back in an epic braid that ran all the way down to the small of her back.

In another flaw that we'd yet to realize the consequences of, Madison was also waking up. She had on a dark red t-shirt (a boyfriend's or maybe one of mine that she'd liberated, I wasn't sure) that hung down to about mid-thigh.

"Aiden!" Maddy shouted. Her hands flew up to her chest like she had to catch her heart before it flew right out of her ribcage.

Error Three: This wasn't so much a mistake as it was an unfortunate circumstance. Our house was built in the 1930s and the only way to get up to the attic was via a ladder that could be pulled down from a pocket door built into the ceiling.

In high school, as a gift to my sister for winning a local gymnastics competition, my parents had finished the attic and made it into a cute, loft bedroom for her. It was actually a pretty neat space and super private. But one of the reasons I'd never been jealous about it (beyond the fact that I got the larger bedroom) was that they'd never bothered replacing the ladder system. So, my sister had a unique experience of climbing into and out of her room every day.

It just so happened that, as I stepped out of the bathroom naked, my poor, shocked, little sister was halfway down the ladder. And when her hands went to her chest, she fell backward.

I reacted on instinct. Things like clothing, or the state of our bodies, or other key details didn't occur. I knew I had to catch my little Madison, or she was going to crack open her skull on the hardwood, hallway floor.

Madison tipped backward. I raced forward.

Much like my sister and I in that moment, our remaining blunders all tumbled on top of one another. Despite the fact that she'd been turned in the other direction on the ladder, Madison fell facing me. My sister was light, but her momentum surprised me and, as I grabbed her, we both tipped backward.

My sister wasn't wearing underwear.

I had an erection.

As we hit the ground, we both had a tremendously unlikely alignment of our complimentary organs. And, as Malcolm Gladwell posited, it all dominoed to create the disaster. We landed with a wet (remember I was still soaked from the shower) thump.

We didn't notice it at first. Well, I didn't anyway. Our bodies bounced onto the ground and both of us gasped as the air was forced out of our lungs. Madison had fallen on top of me, and I wrapped my arms around her to try to stop her fall. I felt her body collapse into mine.

I looked to see if Madison was OK and found my baby sister staring down at me with big, liquid blue eyes.

"I've got you," I said, stating the obvious.

"Aiden," she said my name again. This time the word was shrouded in a deep, throaty groan. "Oh my God."

"What's wrong?" I asked.

My sister was staring at me with such horror that, stupidly, I thought maybe I'd broken a bone in the fall or was bleeding from somewhere. Disaster protocol kicked in, and my body parts all started reporting into my brain that they felt intact.

Madison leaned forward. And that's the moment when that very key part of me finally checked in to let me know about its surprising situation. My penis, my dick -- my epically, inexplicably, erect cock -- finally registered that it was buried to the hilt in something warm, wet, and wonderful.

By some phenomenon of physics. By some beneficence of biology. By some felicitous, fortuitous, and fantastically stupid stroke of serendipity, I'd penetrated my sister in one shot.

Holy fuck!

"I'm

inside

you?!" I shouted it so loud that it echoed down the hall. "How in the hell am I inside you!?"

"I don't fucking know but you very much fucking are!" Madison yelled back.

She was sitting on top of me, legs straddling my waist. The perfect picture of the cowgirl position, achieved completely by accident.

"Oh Madison! Maddy! My little MadMonkey, I'm so sorry. How did this even happen?!"

"I don't know."

Madison, clearly distraught, lifted up her shirt to reveal her naked, pink pussy now stuffed full of brother-cock. Our intimate connection was undeniable. Her teeny, tight, twat (with just a bit of blonde pubic hair) was being split by my ruddy, thick dick. It would have looked incredible if it wasn't for the horror of the moment.

I tried to piece it all together, as if the puzzle hadn't already, irrevocably, fallen into place. "When you fell -- when I caught you -- we must've, like, lined up."

"Why the fuck did you have a boner?" Madison asked.

"Why the fuck weren't you wearing underwear?" I asked, "And wait, why were you fucking wet?"

Both of us seemed to be saying the eff-word a lot. Probably because we were actually fucking. So, the expression seemed appropriate. Also, I think we were both in a bit of shock. Our situation was so unlikely, it was hard for either of us to rationalize our reality without a whole lot of cursing.

My traitorous dick pulsed.

"Aiden, what the hell are you doing?!" Madison asked, staring incredulously at our incestuous connection.

"You feel really good." It came out as a mumble.

"I what?!"

"It's not my fault!"

"Well, you need to remind that huge, thick dong of yours that it's in your sister," Maddy said.

"And you need to tell your tight, soaking twat that it's clasping your brother's cock!"

We both glowered at each other, rage rising off of us like steam. Then burst into laughter.

Before that morning, Madison and I had a typical sibling relationship. Not crazy close but never distinctly distant, either. There were times where I felt like my sister was a companion and others where I wanted to stab her. Standard sib stuff.

And yet, there we were, brother-p in sister-v. So, we processed that discordance the only way we knew how: by laughing hysterically. I'd argue it was actually the most reasonable reaction. Healthy, honestly.

"Seriously, MadMonkey," I said, using my pet name for my sister as I wiped the mirthful tears from my eyes. "I am so sorry."

"It's OK, GatorAid," Madison said, using her own childhood appellation for me. "I know it's weird. But in some ways, I'm kind of grateful." She raised her palms in a clear double-stop symbol. "Not about this. Definitely not. But you were trying to save me. This is just something stupid that happened. It's fine. We're fine."

An unanticipated relief washed over me. What had happened was so bad, but it should have been way worse, and I'd been worrying about the whole thing more than I was aware. "Thanks. I don't think I could forgive myself if I screwed up our relationship."

"Really? Screwed up? That's how you want to describe this?"

We started cackling all over again. Is it weird that I was proud of us? This moment could have been so miserable. Instead, it was something we might eventually have fond, funny memories of. OK, probably not.

But I want to pause here. Because, to this point, I'm sure you're dubious about all of this, but maybe not in complete disbelief. After all, there are plenty of stories out there where a woman (usually a blood relative) accidentally plants herself on a penis (or plants a penis in herself? I don't know the correct terminology). And I think that while we can all agree it's extremely unlikely, the scenario has achieved a kind of fictional plausibility (like bigfoot or aliens or even sibling incest, itself) where we're all willing to accept that it's a thing that might possibly happen, despite how overtly unlikely it actually is.

So, if you're already raising a doubtful eyebrow, I want to make it clear that we haven't even reached the unbelievable part of my experience yet. For all the fantastic nature of what had occurred so far, compared to what we were about to discover, this was all relatively (pun intended!) reasonable.

Meanwhile, back in the hallway of our parents' home, Madison's pussy was flexing around my dick in a most delicious way as we giggled at our shared predicament. It was a very pressing reminder of the fact that, while we were taking this in stride, I remained buried to the balls inside my little sister's gripping, slippery pussy. Madison seemed to notice it too; that her brother's girthy, iron hard cock continued to poke and stretch at her forbidden depths.

"OK, well this has been fun and all," Madison said, "But I think I'm ready to stop fucking my brother and move on with my day."

"Beyond a good idea," I said.

My baby sister put her hands on either side of my flank and pushed up with her knees. I felt the heat of her slowly retreat from my dick. Then stop. She slid back down, making an odd, pained moan.

"Um, Maddy, dearest," I said, "Moving up and down isn't solving this. It's actually remarkably close to the opposite of what we agreed to stop doing."

"Shut up, Aiden," Madison said. A bit of a growl in her voice. "Just... hang on."

She lifted herself again, reached about the same point, stopped, then slid back down with an anguished groan.

"Mads?"

"Shut up shut up shut up! Let me concentrate for a second."'

My sister bit her lower lip, adorably. She twisted and turned as well as she could while still impaled on my member. Like my dick was a jammed bolt and her pussy was the wrench. Madison lifted up again, then stopped and started undulating. Left and right, up and down. I know this sounds a lot like sex, but it didn't feel pleasant at all -- more like she was trying to twist my dick off.

Finally, Madison jerked herself up sharply. Face strained. Now it felt like she was trying to rip my dick out by the root. Not exactly an improvement in the sensation.

Right when I was going to stop her, Madison screamed, a primal cry of frustrated pain, and fell forward. My dick went

*schllluuuuup*

all the way back into her sweet, syrupy pussy.

"God-fucking-dammit!"

"What the hell are you doing?" I asked.

"It's stuck," Madison said.

"Bullshit," I said, "That's- There's no fucking way."

"I agree it's complete nonsense, but you'll have to explain that to your stupid penis because it's like, wedged up there or something."

I gave my sister the most doubting look I could muster. "I mean, I guess I could see it if you were like, really dry or whatever. But I can feel you're soaked as all get out."

"Thanks for the reminder," Madison said, "Don't forget you're also as hard as a steel rod, you dirty sisterfucker."

"I didn't mean it that way," I said, "Seriously, no judgment implied. We're both culpable here."

Madison crossed her arms and glared down at me. It was clear who she thought was at fault. And her patience, like her pussy, had reached the limit of its plasticity.

"I'm trying to figure this out," I said, "Because there's no way this is actually happening."

"You try it, then" Madison said, "Oh great master of the vaginal arts."

I pushed at my sister's hips. Again, her pussy began to relinquish my cock. Madison's hands tightened on my sides. I felt a kind of pressure around my dick, like something was cinching around it, so I pushed harder.

"OW OW OW OW! Stop!"

I let my sister drop back of her own accord.

*Schllluuuup*

went my penis as it slid back into its now-familiar position.

"See, I told you," Madison said, "You're stuck inside me."

The reality of where we were, what we must look like, entered my mind. Both siblings lying in the hallway, soaked in shower water, sweat, plus some other bodily stuff. Connected in a most sexual way and screaming at each other. We must have made quite a sight, which made me oh-so-glad that no one could actually see us.

"I'm so confused," I said, "It's a vagina not, I dunno, complicated duct work. Your body is literally designed to let my penis go in and out."

"Yes, thanks for taking me through all that, professor," Madison said, "It's ever so helpful. By all means, please continue to mansplain my own pussy to me."

"Well, if you're so smart about it, why is my dick still in there?"

"I don't fucking know!"

"Well, has this happened before?" I asked.

"I think I'd remember if it did," Madison said, "I'm not exactly in the habit of sticking things up in there!"

Something about the way she said it made me pause. "Waitaminute, Maddy. Are you a virgin?"

"Not anymore!"

My heart sank into my stomach. I looked up at my little sister's face. Her big blue eyes and cute smile. I'd always thought she was adorable. And now.

I put my hand on her arm, trying to be comforting. This was bad enough already, but realizing it was also my little sister's first time -- that I'd taken something irreplaceable from her -- made it all the more terrible.

"It's OK," Madison said, "It's fine. Honestly, I wasn't even going to count it."

"That makes sense," I said, "But this is seriously weird. You need to see your gynecologist or whatever."

"How do we know it isn't your strange, freakish dick that got itself lodged in me?"

"Because I've been with women before and this has never happened," I said.

"Really, Gator, is now the time to bring up your many conquests?"

"That's not-"

"Geez, who knew you became such a huge manslut in college?" Madison shook her head with disdain, a sparkle of sibling playfulness in her eyes.

"I haven't been with that many women, OK?"

"Whatever," Madison said.

"I'm not some dude-whore or whatever you called me."

This sibling bickering was very much on point, but it wasn't getting us anywhere. I glared up at my sister. Madison glowered back. Then her face quirked, like she was thinking.

"Maybe that's the problem. The fact that we're brother and sister. Like, our bodies are so..."

"Compatible?"

"I was going to say

in

compatible, you perv!"

That raised another factor, one I wasn't ready to admit to my sister. Or even, truly, to myself.

Madison had let the red shirt hang back down, but I caught little glimpses of her puffy, pink labia split around my aching, swollen shaft. I could also catch the slight swell of my sister's small breasts under her shirt. And even now -- with Madison looking at me for all the world like I was the most objectionable being on the planet -- I had to concede she was

so

pretty. Her innocent face, freckled nose, and thin coral lips. It was all enough stimulation for me to think that I might succumb and...

"Maddy, I think I've figured it out," I said.

"Oh, thank God," Madison said.

OK, my feelings were a little hurt that my sister sounded so relieved she no longer had to ride my dick. But I decided to let it go. This was a stressful situation for both of us.

"It's easy," I said, "All I have to do is cum. Then my dick will get soft and slip out."

"Aiden no!" My little sister's face filled with horror. "You can't do that!"

"Um, hate to break this to you, Mads, but I very much can."

"Seriously?!" My sister spluttered. "It's so wrong!"

"I won't even acknowledge that it's with you," I said, "I'll think about Kelly the whole time."

Madison cocked her head at me.

"Kelly's my girlfriend," I said.

"Oh right," Madison said, and her face softened to a look of genuine concern. "I didn't think about it till now, but I guess you're kinda cheating on her right now. That sucks."

"It's OK," I said, "Honestly, I wasn't even going to count it."

"That makes sense," Madison said.

"What about you? Are you, um, seeing anyone right now?" I asked.

"Is this really the best time to catch up on my relationship status?"

"I wanted to make sure you weren't also, you know. Cheating."

"Well, if you must know, I'm actually between boyfriends right now," Madison said.

"That's good," I said, "Sorta. Any reason why?"

"I've been so busy with college and classes. Being a freshman in a new place is so overwhelming and I... OK, maybe we save this talk for later?"

"Yes, good idea," I said.

"In any case, you need to come up with another solution because cumming in me isn't an option."

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