Gay Sex

My 19-year-old fraternal sister is Obsessed with my Penis

Persistently Demanding, I Can't Say No, Not Even During a Family Vacation.

Spankmasters
May 4, 2024
11 min read
public sexbig dickcollegefat cockdildomuch cumrugbysister and brotherMy 19yo TwinSis is Addicted to My Dicktwin
My 19yo TwinSis is Addicted to My Dick
My 19yo TwinSis is Addicted to My Dick

My 19-year-old fraternal sister is Obsessed with my Penis

I'm eager to share my stories, but being French-born, I hope you understand my English's flaws.

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My family has some peculiar customs. Up ahead, the one connected to my birthday. I should add that I have a twin sister, Patricia—we call her Pat.

"Did you remember to pack everything, Doudou?" My mother shouts from the hallway as I finish filling my sports bag in my room. Her frequent nickname for me is "Doudou," even though my name's Edouard and everyone else calls me Eddie.

My parents are well-meaning. However, as their wedding anniversary lands in late May, and Pat and I share a birthday on June 1st, they insist on a family weekend surrounding the first rugby game in June. Clarification: I've played rugby since the age of six, and now I'm on Grenoble's junior team; my sister is a cheerleader.

On Sunday, my team competes in a regional tournament in Clermont-Ferrand, 150-160 miles from home. We're leaving Friday evening to celebrate our birthdays and their anniversary at a cottage above Clermont-Ferrand.

The most obnoxious element of this custom is my parents' insistence on us adhering to old-fashioned traditions. Like dressing for our sports while traveling! Can you imagine?

At the age of 19 (five days ago!), I'm a solid guy. Not super tall (around 6'), but rugby has helped me build some muscle without being excessive (180 lbs, flat stomach!). I'm quite a looker, with brown hair, a chiseled face, and most notably, stunning blue eyes that captivate ladies. I'm also quite successful with them, maybe due to my naturally sized endowment (8'' x 5.5'': from what I've gathered, it's the ideal size of not tearing them while giving them the right amount of filling).

My mom humorously inquires, "I'm excited about the weekend, right? Not you?" My dad, the driver, and I agree with a lack of enthusiasm.

An additional family tradition my dad recently started: we opt for secondary roads to avoid highways! Going to Clermont-Ferrand will take us at least four hours. Unsurprisingly, my sister and I dislike this despite the Audi A8's spacious interior.

"I'm going to take advantage of the trip and catch some shut-eye." Pat tells us, shifting closer to me, resting her head against the door, and bending her knees.

As for me, I scroll through my phone. After a few minutes, Pat adjusts, and I'm now completely baffled; her cheerleader mini-skirt barely covers anything, and she hasn't put on any underwear! My sister shows off her vaginal area and the cleft of her buttocks without a hint of embarrassment.. To her own brother.

Things get worse when she lifts her head and flashes me a smile after noticing where my gaze settled. She withdraws and inserts a slightly visible yellow handle. This device slowly flails, or rather lunges at the rhythm of her vaginal contractions. Her vagina is easing it, feeling moistened with excitement.

Luckily, parents can't see or hear it: they're conversing amicably, sharing nostalgic tales from their younger days accompanied by 90s playlist tracks.

As for me, I've faced earlier provocations from my twin. It all started during our freshman year at college in September. It's unclear if it was due to her 18th birthday, her move to college, or her new friends, but she's been trying to get me in bed. Despite my reluctance, I don't want to sleep with my own sister.

At one point, her provocations were unending: walking in on me while I was showering, slightly opening my bedroom door when I was watching porn and masturbating, picking up my dirty underwear to smell them and find the results of my hand-jobs, spying through my bedroom window a few times when I brought a girl home for sex…

Then things suddenly calmed down during the holidays after a dramatic event. One morning, I wake from a fake dream where I was receiving an awesome blowjob (it's a common fantasy for me!): so, I decide to take advantage of this situation and relieve myself of my morning wood by taking care of my aching balls... When I lift the covers, I notice... Pat! I realize that what woke me up wasn't a dream but my sister giving me a blowjob!

I felt so furious that I roughly pulled her arm out of my bed. Since I was being rough, I strained her left wrist! Of course, I didn't mean to hurt her, but the pain made her less hysterical. A few days later, she started dating one of my rugby teammates, a well-endowed guy ready to satisfy her sexual demands!

Back in the car on our way to Clermont-Ferrand: I could see her vagina contracting, and the banana was threatening to come out. It slid so effortlessly, the dildo slid onto the seat. To prevent my mother from seeing the huge, sticky yellow banana on the leather seat, I picked it up and put it back where it had come from. Pat moaned and put her hand on mine, pushing the dildo back and forth: I should've never touched that thing!

Firstly, because it aroused my sister. But also because it stirred up my erection and libido. When I'm stiff, nothing brings my cock back down except a masterful handjob!

After some playful back and forth, she took the banana out once more and stuck her tongue out at me, before putting the dildo into her mouth. Then, she took my right hand and guided it towards her wet pussy from where a small stream of her juices was flowing out. Without really knowing what I was doing, I plunged my thumb in: it was very warm, soft, and wet. As it was completely stretched out, I took out my thumb and replaced it with three fingers instead (and just so you know, I'm not some skinny-fingered faggot!). She moved her pelvis, pushing my fingers deeper into her horny pussy…

I removed my hand to smell the aroma of her intimate fluids: it was like heavenly nectar! This caused my cock to spring upright instantly: I straightened my shorts before pushing 4 fingers back inside my sister's horny pussy. She released even more fluids. She moaned quietly. I shifted my hand to stimulate her clit: she writhed with delight on the seat while sucking her banana. For several minutes, I switched between 4 fingers in her wet pussy and stimulating her clit: at that rate, Pat was overcome with violent contractions and a forgotten sigh of pleasure escaped her lips.

"Is everything okay back there? Paty, are you awake? And you, Doudou, are you feeling okay?" our mother asks, turning around a little.

"Yes, yes!" I quickly replied to calm the situation and Pat added, "Yes, I'm just waking up. I had a really weird dream: Eddie insisted I ate fruits and showed me four fingers like he was counting! Absolutely nuts! But I think I'll try sleeping again now."

"Make the most of this moment of tranquility to rest... Doudou, you have a big match on Sunday and I want to be proud of my strong, energetic son!"

"Me too!" Chirped Pat, shifting positions: she was now sitting on my lap, her butt against the door, her back facing the front seats.

Similar to you, I realized what her naughty, dirty plan was!

I saw her staring at the fabric of my shorts as if they were a lollipop still wrapped in its plastic. She placed her index finger on the soccer ball protruding from between my muscular thighs and caressed it. Then she moved in, putting her lips on it and sucking my shorts. The bitch is going to leave a mark on my dark shorts; When we get out of the car, I'll look like a fool!

So, I decided to take the risk of moving my butt slightly off the seat and sliding both my pants and boxers down my legs. Since I'm no lifeless log, if my sister wanted to give me a treat, it would be stupid of me not to take advantage of it! I found myself with my cock in the air, standing tall between my muscular legs, right behind my dad's seat, with my mom who could turn around at any moment and my sister who was already jerking me off!

To be completely frank, I'm not surprised by anything happening in this car! In fact, I learned that for the past two weeks, I'd been dating Betty, Pat's best friend at college. Because they're so close, I'm sure she'd have described in detail all the dirty things we did together!

We make the most of every moment together! Since we started dating, I've never gone a night without having sex with her. She's fallen in love with my "non-stop machine gun."

Whenever we're alone, she strips naked and pulls down my jeans and underwear. My cock is already hard and pointing skyward. She eagerly takes it in her mouth and blows me like no one else has. Then we have sex in various positions: between her breasts, inside her pussy, she sucks me, and occasionally I even fuck her in the butt. All of this ends with massive ejaculations that I send wherever my cock is residing. My balls are so full, my spunk is always plentiful!

Recently, Pat has been eyeing me again, like a fly is attracted to honey. It's clear that Betty has shared details of my skills in bed.

In the backseat, Pat gives me the blowjob of a lifetime, trying to engulf my entire penis. She has so much energy that she even manages to choke and starts coughing violently.

This prompts Mom to ask, "What's happening, darling? Are you okay, Patty?"

Pat replies without laughing, "Yes, I'm fine, Mom. I was still dreaming, and they forced me to eat bananas; they were trying to choke me...!"

My mom responds with a laugh, "Oh, poor Patty! You know, bananas are great for you."

I'm laughing too when my sister stops sucking me, but she continues to jerk me off energetically. It doesn't take me long to feel my balls tighten, and my cum is ready to erupt. In the car, I shoot out about ten concentrated jets, including the first three which hit the ceiling. It's like a heavy rain of semen falling back on us.

I can't help but moan with pleasure. Pat then switches roles and starts cleaning my cock like a playful cat.

My only concern now is the smell.

After these events, Pat and I slept together for the last two hours of our trip. When we arrived at our cottage, our parents woke us up and said, "Aren't my favorite rugby player and my precious cheerleader cute? They sleep like children..."

It's almost 10 p.m., we ate a quick picnic on the cottage terrace. By 10:30 p.m., we headed to our rooms: my parents in the large one downstairs, Pat and I in the attic upstairs.

Pat is taking a shower: this gives me enough time to make a video call with Betty. She gets me so hot, insisting I masturbate for her. Meanwhile, she stuffs a banana inside her vagina (the same model of dildo as my sister's!) and moans, "My God, this is amazing! But I prefer your big penis... Especially with the cum you fill me with! Show me your cock, Eddie, please!"

While filming my erect penis and stroking it for her, I'm unexpectedly surprised to see the bedroom door open and Pat walk in, naked. She usually spends at least 20 or 30 minutes in the shower. However, she returns within just 5 or 6 minutes this evening. I'm stunned and remain motionless. Pat seizes my phone and says to Betty, "Hey Betty, my brother seems desperate, would you let me relieve his pressure? Otherwise, I think he might not come at all! Have fun! I'm going back to my plastic banana!" Betty laughs and says, "Sure, that's fine as long as you bring him back to me Sunday night with his balls not completely empty." Then she hangs up. I can't help but feel like they've set this up together.

Pat returns and starts sucking me, gently playing with my hairy testicles. She pauses her blowjob and takes my dick in hand. Looking at me with desire, she asks, "Don't you think I suck well?!"

I'm only thinking of one thing: to fuck her and emptied myself into her. But my brain is still functioning, making me say, "Yes, Pat, you blowjob amazingly! But Betty could be the woman of my life. Plus, you're my sister... So, let's make a deal tonight: I fuck you however you want. Then, we'll get back to our sisterly relationship. Okay?"

"Yeah, if you insist! But you should remember, we've been naked and rubbing against each other for nine full months... In Mom's belly!" Before returning to her blowjob.

I express to her after a few moments, "I desire to thrust my penis into your vagina... does that sound appealing to you?"

"Absolutely, I'm yearning for it as well! Fuck me in the doggy position: Betty mentioned that your curved member provides the most stimulation for her."

She climbs up on all fours on the bed, exhibiting her bottom to me. I assume a position behind her. I stroke the head of my penis against her vagina and also caress her clitoris with it: she moans. I push subtly and my penis glides into her moist, welcoming vagina.

Even without any motion, my penis is like drawn in and plunges to the hilt! Her dildo must have thoroughly prepared her vagina.

I seize her waist and begin a back-and-forth motion inside her sex. Faster and more powerful, more potent, deeper and deeper... She moans and I communicate obscenely to her. I disengage from her completely and massage my lubricated glans against her clitoris once more. She urges me, "Dammit, it's fine Eddie! You truly know how to utilize that massive, fat cock of yours! I'm envious of Betty... Penetrate me again and fill me up, PLEASE!!!"

The excitement is heightened for me as well: I don't require any further enticement and five or six back-and-forth movements are sufficient for my first jet of semen to escape. I remain embedded to the core. My penis twitches seven or eight times, producing eight jets of semen. Upon the cessation of the ejaculations, I edge slightly in her vagina, then gradually withdraw: it produces a "Thud!" and semen drifts from her vagina.

I recline on the bed, my erect cock resting on my abdomen. I grin at her.

She grins as well and remarks, "Wow, Eddie, you really know how to fuck! You're much better than my banana!" Then she acquires my boxers, wipes her vagina with them, and positions her tongue close to... lick them!

"Cease Pat! It's repulsive!"

"No, it's simply natural... Moreover, I believe I'm extremely addicted to sperm! To culminate this spectacle, since I've learned that your testicles fill up extremely quickly... And since you're still displaying that erect penis... I'd like you to give me a facial!"

It's something we often do with Betty: it has the advantage of draining my testicles and it allows me to sleep like a baby and enjoy a fantastic night afterward. Therefore, I don't need to be cajoled: I rise and Pat sits on the bed edge with her mouth wide open; I approach her, my penis pointing at the ceiling; I push my glans down and push myself into her wet mouth.

"Holy cow, Pat! Your mouth is as hot as your vagina: I have a hunch it won't take long for me to ejaculate!"

She removes my penis from her mouth and strokes it vigorously: it glides smoothly with all her saliva... And states to me, "Cum as swiftly as you desire: with the treatment I'm inflicting on my nipples, my excitement is at its pinnacle! However, most importantly, exert yourself to give me a mouthful!"

I reinsert my penis into her mouth and pound her with the full force of my muscular thighs and my rugby ass. I pound her so vigorously that I'm almost concerned about dislocating her jaw!

After just three minutes at this speed, I feel it approaching: I grasp my penis and masturbate while remaining as close to her mouth as possible, which she keeps wide open, tongue out. With a groan (so as not to awaken our parents!), I expel few enormous, viscous jets of semen onto her face...

This is the third eruption I've experienced today and I'm astonished by how much semen I can still generate!

In a "brotherly" spirit, I bend towards my sister's face and lick her face to clean all the semen I've just unleashed on it. Then, I plunge my tongue into her mouth: a passionate kiss...

Exhausted, I retire to bed without even attempting to bathe...

The following morning, as I rise from bed, revealing my morning wood, she muses from her bed, smiling, "Hey-Dick! This is the moniker I shall refer to you as from now on: it suits you better than Eddie or Doudou!"

I genuinely hold the impression that this incestuous pursuit by my sister will never cease: I've accelerated the speed of my penis!

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