This story is a repost of the original story I posted on 2013-09-04. It is edited to conform to the age rules.

Practical Jokes

As I woke up, I knew there was something unusual. The room I was in was my own room, and so was my bed, but I was not alone. In my arms was my younger sister, still sleeping. She was completely naked, and so was I. I felt a dull ache in my balls, and the hair in my crotch was all matted together. Slowly it came back to me what had happened last night, how Marlene and I had fucked like animals for hours until we both were completely drained. As I felt my tired cock swell again between my sister’s legs, I thought about how things ever could have culminated in last night’s bout of passionate lovemaking. It was a long story, starting years ago, when we were just little kids.

My sister Marlene was just under a year younger than me and we always got along really well. For the first twelve years of our lives, we shared a single bedroom and even had a double bed where we slept together. When we were kids and all through elementary school she was my best friend and as we got older and started attending different schools, we remained really close. We had the same group of friends, shared the same hobbies and it seemed that wherever we went, we always were together.

Being together all the time meant that seeing the other nude was nothing extraordinary. When we were really young, mom used to bathe us together and when we were old enough to take our showers by ourselves it wasn’t unusual for Marlene to share a shower with me. I would wash her and she would wash me. It was all very innocent and when we got a little older and bigger, we started to take our showers alone, but Marlene always got dressed and undressed in our bedroom.

So you could say we were really comfortable with each other, but it was all really innocent and we never saw any harm in it. However, as we grew up and entered puberty, our parents began to think otherwise and one day our dad decided we were getting too old to sleep in the same bed. Things had to change and not long after that, we moved to a bigger house where there would be a private bedroom for each of us. This ended our fooling around at night, but we still remained really close.

One special thing about our friendship was that we always played practical jokes on each other. It started relatively innocent when we were both just kids. At first it was just silly things like loosening the caps of the salt shaker, sneaking into the bathroom and flush the toilet while the other is showering or drawing mustaches on the other’s face while he or she slept. A favorite trick of her was to get me hard at really inappropriate times, and I liked to drop a little water in her crotch that made it look like she wet herself. It was all really innocent, but as we grew older the jokes became less frequent but more complicated.

Most of the times, we managed to keep our parents unaware of what we did. They usually disapproved of the pranks, but they left us to our shenanigans, as long there was no permanent harm done and nobody else was duped. Mom and dad were always the first to laugh at us when one of us had to walk home, wearing boots full of maple syrup or when Marlene had my room restyled to fit a 12 year old girl’s tastes. Half of our time was spent in plotting, the other half was spent in constant fear, as revenge could be taken at any time.

That’s how the situation was almost a month ago, on the day that things got set in motion that somehow ended up with me lying in bed with my beautiful naked sister in my arms, wondering how the hell I got so lucky.

As I was eating my breakfast that day, I had a feeling in my gut that something was suspicious. Marlene had already finished her cereal and was eating a grapefruit with a perfect poker face. She was her usual cheerful self, but I just knew she was up to something. Something evil. I could not detect anything out of the ordinary, but I kept vigilant. It was a few weeks ago since I last played a joke on her, so her revenge was due any time now. Breakfast went by without anything unusual and Marlene kissed us goodbye and got on her bike to ride to school. Since I finally saved enough money to buy my own banged up truck, I always drove the five mile journey and therefore had ten more minutes before I had to go too.

I emptied my bowl of frosted cornflakes and quickly downed my glass of orange juice and started packing my books for the day. I brushed my teeth, kissed mom and got in my car. While I was driving to my college, I began to feel a bit uneasy. My stomach was grumbling and my guts began to ache. At first I didn’t think much of it, but the feeling of uneasiness became more urgent and soon I was feeling really awful. I started to consider stopping the car and relieve my bowels in the bushes next to the road, but I was raised well and I would be at school in 10 minutes. I unbuckled my belt and decided to hang on.

One minute later however, I could take it no longer and had to stop the car. That’s when I found out the locking mechanism of the doors had been jammed and the doors would not open. I started to panic, something horrible was going to happen to my truck in a few seconds if I could not get out. Luckily I was able to roll down the passenger window and crawl out that way, and with my pants around my knees and ankles I dropped in the mud beside the road. I hopped to the shelter of the shrubs and let go. It was agony and bliss at the same time, but I felt a lot better when I reemerged a few minutes later.

When I got to the car, there was my sister, laughing her ass off.
“I got you Ray, that’s payback for putting those crotchless panties in my gym bag” she snickered as she pulled a bag from the bed of my truck and tossed it to me. I opened it and saw it contained a pack of wet wipes, a fresh pair of underpants and stylish pink men leggings.
“Here, go fix yourself, you look like a pig” she jeered.

For the moment, I accepted my defeat and took the stuff she had brought. As I got back in the shrubs to get myself decent, my mind was already busy planning my revenge. Sure it was a deserved payback after all the humiliation she had gone through when her classmates discovered the kinky underwear, but I knew vengeance would be mine.

After I had cleaned myself and put on the fresh clothes, I got back to the car. Even though I was still feeling a little miserable and looked like some gay fashion idiot in those leggings, there were no hard feelings. I still loved my sister and I must admit she really had me this time. It would be difficult to come up with something to top this, and it had to be something she was unable to best. What I needed would have to be the practical joke to end all jokes, and leave me forever as victor.

“Get in the car, I’ll drive you to school otherwise we’ll both be late” I said as I tossed her bike in the back and got behind the wheel. I dropped her off at her school, promised to pick her up again that afternoon and drove on to my school.

That afternoon, Marlene was waiting for me outside her school. Her classes ended 30 minutes earlier than mine, so she had a lot of time thinking of new ways to taunt and tease me with my humiliation this morning. It was all part of being the victim, and she really knew how to milk it. She also knew when to stop and later that afternoon she even helped me to repair the locks of my car again.

My sister was fully aware however that the ball was in my court now. She knew she would not be safe from me from now on. But, I knew she liked it. The agony of anticipation was part of the game. Never let the other out of your sight, never let him or her get the upper hand. She would be watching me day and night.

After a few days of brainstorming, considering the options and fine-tuning the plan, I knew how to get even with her. It was a bit risky, but also a prank she could not beat. I was not afraid I’d cross the line with this one; if there ever was a line, we had crossed it long ago already. At this stage in the game the only unacceptable prank was to kill her at a really inconvenient moment, and that was something I was not prepared to do. What I was prepared was almost as bad though.

Although she was not seeing anyone at the moment, I knew Marlene was no virgin, not for over a year now. I also knew she was not on birth control. She always made her boyfriends use a condom and was very meticulous about it. She also was an extraordinarily heavy sleeper, something I had discovered years ago, when I was drawing complete beards on her face while she slept. For my revenge, I was going to make use of those facts.

In order for my plan to work, I first had to gain knowledge of my sister’s cycle. I kept an eye on her supply of female hygiene products and waited for when her tampons started to disappear. When that happened, I would have to wait another ten more days and then it would be time to settle the score once and forever.

The days seemed to crawl by as the date came nearer. I had taken all my precautions, bought what I needed and had not jacked off for five days. That night I set my alarm for 3 a.m. although I didn’t close an eye. When the time neared, I got up and crept in the dark to my sister’s bedroom. She was sleeping like a baby. She was looking so beautiful and sweet and so innocent and vulnerable, it was difficult to continue with what I had planned to do next. I had to remind myself of all that she had done to me and how she deserved this in return.

I steeled myself and walked to her bed. I grabbed the duvet and pulled it down. She was still sleeping, peacefully unaware of what was to come. With trembling hands I lifted the hem of her nightgown and raised it over her butt.
Like I had hoped, she wasn’t wearing anything underneath her gown. I had a first-rate view of her perfectly shaped butt and her little shaved pussy below it as she was lying half on her side, half on her belly, with one knee raised. Her exposed position was also ideal for what I was planning to do. My cock was already hard as steel and drooling copious amounts of pre-cum. It was now or never and I decided to continue.

I grabbed my throbbing cock and started pumping it until I felt my balls tighten. It didn’t take long as I was taking in the beauty of my sister’s round behind and pink pussy. She must have been dreaming of something nice, as her lips were swollen and wet with her juices. I couldn’t resist and let my free hand feel up her pussy. It was as soft and delicate as it was when we used to snuggle together, but now it was slippery with her juices and boiling with heat.

Marlene slept like a log through my molestations, which gave me the courage to continue. I crawled as stealthily as possible on the bed and positioned myself over my sister’s gorgeous butt. Using her juices as lubricant, I Started jacking off again and when I was about to blow my load, I jammed my cock deep in her wonderfully tight pussy and blasted my seed against her unprotected and very fertile cervix.

Marlene woke up with a shock as her pussy was suddenly penetrated. Before she was awake enough to understand what was happening, I had already pumped five days’ worth of sperm inside her.

“Ray? Wha..?” she asked, then realized she was being fucked. Luckily, I was already done by then and my cock slipped from her pussy, rapidly losing its firmness. A string of slime connected my cock with her pussy. As I retreated, the beady thread broke up in a series of little pearly white drops which landed on her leg.

“You fucked me? And… you came inside me?” she asked, shocked and a bit groggy.
“Yes” I said, doing my utmost to sound pleased.
Her hand felt between her legs, where my sperm began to ooze out her pussy.
“Ooh, you did cum inside me. Why did you do that?”
I laughed and kissed her playfully.
“Payback’s a bitch, sis.” I grinned.
“No, I can’t.. Why?” she whimpered.
“Here, I got you something” I said and gave her a small package.
“What is it” Marlene asked meekly.
“It’s a morning after pill. You’ll be ovulating any day now, so you’ll probably get pregnant if you don’t take those pills. You’ll be sick for a few days, but… like I said, payback’s a bitch” With those words I got up and softly kissed her on the lips again.
“Thanks babe, you were great” I said jokingly. Then I got out of her bed and exited her bedroom, leaving her confused and full of cum.

Later that night, when I lay in my bed, I couldn’t sleep. I kept thinking of what I had done. Was this my final practical joke, or had I gone too far and fucked up our friendship? Would Marlene hate me now, or was this a beginning of something more? Of course I knew that a brother should not do such a thing to his sister, that I had actually raped her. But, she hadn’t seemed to be too angry about it though. Maybe she had enjoyed it too.

As I was contemplating the event, I kept thinking how, at this very moment, my sperm cells were swimming in Marlene’s vagina and womb, looking for her tiny egg that was waiting to be fertilized. Maybe one of my little swimmers had already reached its goal and was right now combining my DNA with that of her, creating a little son or daughter…

I could not help it but to get hard at that thought. As I fantasized about my little sister and my seed impregnating her, my hand found my cock again and started jacking it again. My cock was still slick with my cum and my sister’s juices, which made jacking off extra pleasurable.

At that moment, my door opened and a naked Marlene entered my bedroom. She closed the door behind her and leaned back against it. I held my breath and waited for all hell to break loose. She wasn’t angry however, that was sure. She was horny.

Without saying a word my sister walked towards my bed and flicked on the reading light. Then she pulled back my duvet, just like I had done with hers only half an hour ago. Unlike her, I was completely naked, awake and very cooperative. Marlene cooed approvingly when she saw my stiff cock standing up like a flagpole. She unceremoniously climbed on top of me and guided my cock back in her pussy and sank down all the way. I was again balls deep in my sister’s hot and moist pussy.

She bent over so her face was next to mine and I could feel her hot breath in my ear.
“You know, I always get easy aroused when I’m ovulating, and your.. visit made me so incredibly horny. I just had to rub my pussy, but even cumming three times wasn’t enough, so I was thinking; I will have to take those pills anyway, I might as well have a little fun first.”
Marlene rose a bit and kissed me. It was a loving, tender kiss that lasted a few minutes while she moaned softly and started making tiny rocking motions with her hips. Finally she broke our kiss and lifted her face above me. She looked in my eyes and whispered:
“I’ve wanted to do this with you for so long. You feel good inside me”
“you feel really good too” I wasn’t lying, my sister’s pussy felt incredibly good.
We kissed again, a bit less tender and more passionately this time. She began to move her body a bit more too, slowly sliding her butt back and forth, moving farther up every time until only the tip of my cock was inside her before she pushed back again. After a while her mind was too preoccupied with the fucking, her kissing slowed down and finally stopped altogether. She lifted up a little and whispered:
“It’s my turn now. Lay back and enjoy the ride”

She sat back upright and began to lift her body on her knees and let it slowly drop again. It was hard to believe I was not dreaming. It was not how I had planned my prank to work out, I had forcefully inseminated her half an hour ago, and now she was here in my bed, fucking me. I was not complaining, I just did as she suggested; I laid back and watched my sexy little sister ride my cock.

She looked gorgeous in the soft glow of my reading light. I had not had a full close-up view of her naked body since we moved to the bigger house, which was just around the time her breasts began to grow. Now she was fully grown and her breasts had become truly breathtaking. Of course I had seen them before, but never this close and surely not bouncing up and down like they were doing right now as she was moving up and down, sliding her pussy on my cock. They were round and full, but firm and definitely perky. Just over a handful and with little pink nipples that stood out hard. Below those mesmerizing orbs was her flat tummy, her cute innie navel and her delectable pussy.

Although she shaved most of her pussy, she left a neatly trimmed little tuft of blond hair above her slit. I could see her pink lips were spread as my hard cock was fully embedded in her vagina. Maybe it was because my cock was created by the same genes that also created this divine pussy, but we fit together perfectly. As she gently rocked and twisted her hips, she forcefully pressed her pussy down on me, taking me as deep as he could. My little sister was a tight fit and could exactly take the length of my cock. I felt the hard bump of her cervix against my glans, her squeezing lips around the base and her clit rubbing against my pubic bone.

My sister now started fucking me for real, sliding her pussy up and down the length of my cock. Her pussy made wet sucking noises as she pumped it faster and faster. Her breath became irregular and ragged as she raced towards orgasm. Helping her, I pressed my thumb against her swollen clit and rubbed little circles around it. That pushed her over the edge and I felt her grip my cock in a quick succession of little squeezes and she bit her lip as she tried to stifle a whimper and a moan while her whole body shook.

She came really hard and she slumped forward, kissing me while I thrust up into her as fast as I could. The sounds of sex filled the room and if anybody was awake in the house, they would instantly know what was going on in my room. Marlene pushed her lips on mine and her tongue practically raped my mouth as she climaxed over and over again until she begged me to stop pounding her pussy.

“Oh god, you’re good, I never came this much or this hard” she panted after she got her breath back. I pushed in once more.
“We’re not done yet” I said and rolled her onto her back.
Marlene spread her legs and pulled up her knees, opening herself up to me. My cock found its mark and we were fucking again.

I could not believe how much I enjoyed fucking my baby sister. Not only was Marlene a very sexy sister, but also my best friend and the girl I unconsciously compared every other girl to. This was the culmination of years of teasing and secret lusting. I knew I would not last long anymore. We had been fucking frantically for ten minutes now and I felt my balls tighten, preparing to spew their content into my sister’s fertile pussy once more. I gave it all I got, fucking Marlene as quick as I could, pushing her into orgasm just as I started cumming.

Her eyes rolled back and she nearly passed out as the huge orgasm took over control of her body. Deep in the center of her convulsing body was my cock, spitting out stream after stream of cum, each heavily laden with eagerly swimming sperms, all looking for her egg to fertilize.

As she slowly came down off her high, she kept me pinned on top of her, her arms and legs locked behind my back and her mouth pressed to mine. I did not attempt to break her embrace, I liked being in her arms, snuggling and kissing me sexy sister. We laid there for almost five minutes. All this time she had her eyes closed and seemed to be dreaming while she ground her hips up at mine, softly fucking my hardening cock that was still embedded in her sloppy cunny. Then she opened her eyes and smiled.
“Hmm yes, I needed that” she whispered.
“Wow, that was great, you’re so hot and your pussy… It feels so good, I want to keep fucking it forever”
“That’s good, because I’m not finished yet” she said and pushed her pelvis into mine again.

My cock had grown back to full hardness again and I pushed back at her. Marlene cooed approvingly at my thrust inside her.
“I love how well we fit together” she said.
I nodded, “It’s because you’re my sister. We are the same”
She agreed and rolled me on my back so she could sit upright again.
“God, you’re beautiful” I whispered as I admired the view.
“You too, big brother, and you’ve got a nice cock” she said and wiggled her butt.
Marlene grabbed my hands, which had rested on her behind, and placed them on her perky round breasts. I gently squeezed the firm globes and flicked her rubbery nipples. They were magnificent and I enjoyed playing with them almost as much as I enjoyed fucking her pussy. She seemed to like it as well, as she whimpered softly again as she started rocking her hips. Using my cum as lubricant, she fucked me with quick little strokes. Within minutes of fucking and me playing with her breasts, I felt her pussy squeeze rapidly and she slumped forward again.

I quickly rolled us over and kept pumping her missionary style without missing a single beat. Within seconds she came again and kept cumming while I fucked her. Not nearly ready to cum myself, I pulled her on her knees and reinserted myself into her frothy pussy from behind. Marlene pushed her face into the pillow and let out a muffled series of moans while I did her doggy style. My hands were wrapped around her waist, pulling her into me as I pushed against her perfect round butt with every squishy thrust. It was a good thing I had orgasmed twice already in the past hour, otherwise the view alone would have been enough to make me cum again. Now I was able to keep fucking her through many muffled orgasms before I could not hold back anymore and shot a third load against her womb.

Spent for the moment, I fell on the bed, next to my sister. She kissed me on the lips and then kissed her way down to my groin where she kissed and licked the cum off my cock. Then she took the head in her mouth and started sucking and bobbing. Marlene’s lips and tongue did wonderful things with my cock and I was soon getting hard again. Her oral skills were second to none, a pleasure only surpassed by the snug fit of her exquisite pussy. Needless to say, she had me hard again in minutes and soon pushed me back inside her.

That night we fucked for hours. I had my cock in her pussy in every position we could think of and had it sucked a couple of times too. I ended up cumming inside her three more times before we fell in a deep sleep in each other’s’ arms, dead tired, but completely satisfied.

Six hours later, I woke up because the sun was shining down on my face. It was the dreaded morning after. My sister was still sleeping in my arms, her angelic face only inches from mine. She looked even more beautiful as she slept. Her wavy blonde hair was all spread out over the pillow, giving her the halo an angel should have. Her cherry lips were parted a little as she snored softly, almost imperceptible. It was hard to imagine that those same cherry lips had been wrapped around my cock as she sucked me back to hardness after each mind-blowing orgasm, the same cherry lips that had opened wide when she climaxed from me fucking, fingering and licking her, the same cherry lips that had tasted so sweet when she kissed me.

As I admired my sleeping sister, she began to stir a little. My heart froze at what might happen. Her blue eyes opened slowly, trying to focus while she too started to remember what had happened. Then she looked at me, and smiled.
“Good morning, stud” she giggled flirtatiously.
“Good morning angel” My heart pounded with delight.

She rolled on top of me and pressed her lips against mine. Her tongue found mine and we kissed like before. Her hands roamed through my hair and mine stroked her back and butt. After a long time she pulled her face off mine and rolled back on the mattress again. My hand slipped off her butt and landed between her legs. I could feel the heat of her vagina and the abundant wetness seeping from it.
“Do you think you’re pregnant yet?” I asked.
She laid her hand on her stomach and felt it. “I don’t know”
“Well, we don’t want you to take those pills and be sick for nothing” I said seductively.
“Yeah, you’re right. Better pump some more of your stuff in me to make sure”

I rolled on top of her and between my sister’s hospitably spread legs. My cock found its mark and with a little push it slid in an inch. She groaned softly.
“Please be gentle, I’m a little sore after last night”
“Yeah, me too” I grunted as I pushed deeper.
“But it feels good!” she moaned. “Fuck me, Ray”
I started pumping, slowly and deep. Her silken insides kissed every millimeter of my cock, gripping it and sucking it fully inside. With every slow push, Marlene groaned softly. She was really tender inside, but every time I pulled out too far, she grabbed me with her arms and legs and pulled me back in her. “Fuck me big brother, fuck my poor little cunny and fill it with your sperm” she encouraged me.
There was nothing I wanted more than that. Only not yet, I wanted to make this morning session last. Last night, our fucking had been frantic, a frenzied marathon race from orgasm to orgasm. This time it was not hurried, it was about tenderness, loving and enjoying each other.

I kissed every square inch of her body I could reach while my cock kept pumping in and out of her in a constant, intense and slow pace. As my lips locked on her pink nipples and started sucking, I felt my sister cum again. I felt the same quick rhythmic spasming of the muscles in her pussy that I enjoyed so many times last night. She softly bit my shoulder to stifle the squeals that came from her as waves of pleasure rolled from her pussy to every edge of her gorgeous body. It took over a minute before she let go of me again and fell back on the mattress.

“Roll over, angel” I whispered as I got off her.
Marlene rolled onto her stomach and spread her legs a little. I placed my knees alongside her thighs, so I straddled her legs and pointed my cock down towards her swollen pussy. I pushed in and started fucking again. In this position she was very tight, causing maximal friction, but I would not push too deep into her battered pussy, making it really enjoyable for us both.

My hands rested on top of her round butt and my fingers were folded around her supple waist. As I watched my slippery cock saw in and out between her legs, I considered myself the luckiest bastard on earth, fucking this hot chick that was actually my sexy sister.

“Oh yeah that’s so good” she moaned into my pillow.
“You’re so hot and tight, your pussy feels so good, I want to keep fucking it forever”
“Yes, fuck me forever” she groaned “Keep fucking my pussy”
I kept thrusting in the same unhurried way I had before while I massaged her firm ass. It was a pace I thoroughly enjoyed and was able to maintain for a long time, certainly long enough for my sister to cum again and again. I felt her pussy gripping me, as she experienced countless minuscule orgasms as she laid on her stomach, defenseless to my penile assault.
“I’m gonna cum again” I grunted.
“Cum in me big brother, I want to feel your hot seed in my pussy”
I just had to obey her and that’s what I did. It had taken over twenty minutes of leisurely fucking, alternated with snuggling and kissing, but I managed to squeeze another load of thick, virile sperm from my balls.

As we were lying in bed, our limbs still entangled, basking in the afterglow of our tender lovemaking, reality hit me. It was almost eleven o’clock and our parents would be up already. We had been very quiet, but it was a risk we should not have taken.
“You’ll have to go angel, it’s time to get up”
“No, I don’t want too, I want to stay here in your arms, in your bed all day” she pleaded
“But what about mom and dad?” I asked.
The mentioning of our parents wiped the smile off her face.
“You’re right. You go first and see if anyone is around”

I got out of bed and put on some shorts and headed for the bathroom.
“Wait” Marlene whispered.
“What is it”
“Kiss me one last time”
I happily obliged, then exited the room. There was nobody on the floor my room was in, so we were safe for now. I took a quick shower and got back in my room. My sister was gone by now and I got dressed and headed for the kitchen to get some breakfast.

When I got downstairs, mom was sitting at the table, drinking a cup of coffee while she worked on today’s crossword puzzle. She looked up when she saw me enter the kitchen. There was a faint smile and a curious look in her eyes. She pushed back my chair with her foot and poured another cup of coffee. I grabbed the cup and took a big swig of the invigorating liquid.
“Had a rough night?” mom asked casually
“I slept like a log, but I had to.. finish something first and it took a little more time than I expected” I answered. I could never lie to mom, but telling the truth would be a lot worse. She’d cut off my balls with the butter knife.
“And did you finish it?” she asked, still making small talk.
“Yes, at about five this morning” I said truthfully as I yawned again.
“So you got back at Marlene for that thing she did with you and your car last month?” she asked.
A little startled, I looked at her. There was that faint smile again. Mom always had a way of knowing everything that happened. I had never mentioned anything about my sister’s latest joke and I’m sure Marlene hadn’t either.
“Err yes, I did” I said, nodding while trying not to blush.
“So you’re good again? Not mad at her anymore?” she continued her questioning.
“No, we’re good” I said.
“And Marlene? Not too angry, I hope?”
“No, she’s fine. Just give her a few days.”
“Good, it’s much better that way” she said, looking me straight in the eyes. “When you guys keep fucking all night you’ll be much too tired for those idiot pranks”

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