My Kinky Sister

Story by punjoke on SoFurry

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#1 of My Kinky Sister

I looked at the pile of textbooks on my desk and sighed; once again I had procrastinated, ...


I looked at the pile of textbooks on my desk and sighed; once again I had procrastinated, staying out all day with my friends, and now I would be staying up late in order to get my homework done for tomorrow. Glancing at the clock, I saw that it was already midnight. If mom found out I was staying up all night again, I'd be toast.

Deciding to play it safe, I acted as if I was preparing for bed. I shed my clothes and changed into one of my night shirts before heading down the hallway towards the bathroom to brush my teeth. On the way, I passed my little sister's room. Stopping, I tip-toed up to it and carefully placed my ear against the door.

Jenna and I got along pretty well, as far as brothers and sisters go. We had the fights all siblings have, but at the end of the day we always made up. We also shared many of the same interests, and enjoyed each others company enough that she would usually tag along with me when I went out with my friends.

What I would never actually admit to her was that I had developed a bit of a crush on her. Yes, my little sister was a total hottie and I desperately wanted to get in her panties. That it would be incest didn't dissuade me at all; perhaps the fact that she was forbidden fruit turned me on even more. Of course, I had no reason to think she would feel the same, and my lust had to be kept hidden.

She certainly seemed determined to make things difficult for me, however. Jenna thought nothing of walking around the house half-dressed, especially at night. It was all I could do not to stare at the tempting little bumps behind her nightshirt as she pranced around innocently before bed. The few glimpses I managed to steal always lingered just long enough for me to masturbate to an intense orgasm once I was back in the privacy of my bedroom.

As time went by I became more and more bold. I would find excuses to stand over her while she was at the computer or sitting at the dinner table in an attempt to sneak a peek down her shirt. When she lay down on the floor in the living room to watch TV, I would sit on the couch behind her and stare at her cute little butt. Several times I had the courage to work my hand into my pants, and I stroked my cock as I undressed her with my eyes, but I would always get up and quickly retreat to the bathroom to finish myself off. Jenna never seemed to be the wiser.

Just recently, I had started sneaking to her door at night and trying to eavesdrop on her. Jenna was definitely old enough that she could have discovered masturbating, and it was my hope that I would one day be lucky enough to catch her in the act. Most of the time I heard her singing along to some song she was listening to, or talking on the phone. Tonight was different however. I'd never come by so late; normally I'd be fast asleep by now. Although I was sure Jenna would be asleep as well, I wanted to be sure.

To my surprise, I did hear some noises. Crouching against her door in the darkness of the hallway, I strained to make out what it was. At first I assumed she was snoring, but my ears suddenly pricked up as I heard something that I could swear had been a moan. My heart beat faster and my palms began to sweat as I lay down on the floor and pressed my ear up against the crack at the bottom of the door and held my breath.

"Good girl, Lucy," whispered Jenna from behind the door.

It must have been a false alarm; Lucy was one of our dogs. For the past month, she'd been going to sleep in Jenna's room at night. I was surprised that my sister was up playing with her this late at night, but whatever the reason was, my initial hopes had been dashed. Most likely Lucy had been too restless to sleep and Jenna was trying to tire her out. I started to get up, resigned to a night of cramming, but the next sound I heard made me stop cold.

"Keep licking me, girl."

My head spun as I tried to wrap my head around the implications of what I had heard. Now I could hear the unmistakable sound of Lucy licking away at something, and Jenna's heavy breathing in the background. When I heard my little sister moan, my cock jumped in my pants. Was she actually letting the dog eat her out?

The idea that my sister would be fooling around with the dog had never even entered into my mind, but suddenly her herding Lucy into her bedroom every night made perfect sense. I wondered how long she had been doing this. What's more, I wondered how I could capitalize on my discovery. As I listened to Jenna whimpering as quietly as she could, I knew that I would have to try something tonight.

It was now or never.

Standing up, I took a deep breath and swung open the door. My suspicions were confirmed as I caught a brief glimpse of Jenna laying back on her bed with her nightie pulled up around her waist, her legs spread and Lucy sitting down in between them. With a high-pitched squeak of surprise, she reacted instantly to the unexpected intrusion by pushing the confused dog away from her while pulling her thin nightie down to cover herself - barely. Her already flushed face turned beat red as she gave a strangled cry of "Timmy, get out!"

Ignoring her desperate plea, I stood in the doorway with my arms crossed. "Busted, sis!" I said with a gloating smirk.

"I said get out!" Jenna cried again, still struggling to keep herself covered. She seemed to be nearly in tears, and I began to feel a little bad.

Closing her door behind me, I tried to calm her down. "Jenna, it's okay, relax." Seeing a pair of her discarded panties on the floor, I bent down to retrieve them, then tossed them to her. Reluctantly, I turned around, facing away from her. "Put them on, I promise I won't look," I said, only half tempted to break the promise.

I heard her rustling on the bed behind me; when the sound stopped I turned to face her again. I was disappointed to see that not only had she put her panties back on, but she had pulled her bed sheets up over her legs as well. She seemed to have calmed some now that she was covered. Lucy, meanwhile, was curled up at the foot of the bed, completely oblivious that anything out of the ordinary was going on.

"Why'd you just barge into my room?" Jenna demanded, her earlier panic replaced by anger.

"I just wanted to say goodnight," I said, obviously lying. Then I brazenly asked, "How long have you been letting Lucy lick your pussy?"

Jenna's face turned red again. "None of your business!"

At least she knew there was no point in denying it. "I wanna watch."

I expected her to flat out refuse me, followed by a bit of haggling. Instead, she seemed almost relieved. "You won't tell anyone?"

"Not if you give me a good show," I said. Of course, I would never have told anyone regardless, but if it helped me coerce my sister out of her panties to suggest otherwise...

Reluctantly, Jenna came out from underneath her sheets. As I walked up to stand by the side of the bed, she gave me a weird look, then raised her legs and slipped off her panties. I felt my pants tighten as I gazed down at her bare pussy, and it was all I could do not to climb on top of her right then and there. Becoming aware of the huge bulge in my pants, Jenna closed her legs uncomfortably. Boldly, I reached out and, laying my hand on her leg, pulled them apart again. Taking the hint, Jenna spread her legs wide and allowed me to feast my eyes on her body. My hand lingered on her warm flesh, and I began to slide it up her thigh. "Don't," Jenna said quietly when my fingers were mere inches from her damp pussy, and I pulled my hand back.

"Come here, Lucy," Jenna called, patting the inside of her thigh. The dog needed no further coaxing than that; she sprang up from the foot of the bed and went right for my sister's crotch. They had definitely been doing this for some time. Jenna let out a sharp gasp as the dog's tongue made contact with her tender slit. At first she tried to hold back, probably nervous now that I was watching her. Soon, however, she succumbed to the animal's aggressive licking and began to whimper with pleasure.

Jenna looked over as I began to unzip my fly. "Mmmmmm... ah... what are you doing?" she asked between heavy breaths. The question was answered when my erect cock sprang out of my pants. Her eyes opened wide as she gazed at my hard shaft.

"Do you wanna touch it?" I asked teasingly.

Jenna frowned. "Ugh, no! You're my brother." Her dismissal was punctuated by a cute squeak as Lucy's tongue flicked over her clit.

"What, is your brother not good enough for you?" I said in mock hurt.

She glared at me, not buying it. Still, when I took her hand and placed it on my throbbing member, she didn't protest. Instead, she wrapped her fingers all the way around it and gave it a gentle squeeze. "Nnnnnn... It's... biiiiig," she said, and I couldn't help but feel my ego inflate. I was really only of average size, but if it impressed my little sis, that was good enough for me. At my urging, Jenna began to stroke my cock slowly; her reluctance was evaporating by the minute. I allowed her to jack me off while Lucy licked her for about a minute, then I told her to stop, not wanting to cum too soon.

As great as it was watching Jenna and the dog, I was ready to move things along. "Do you know what a blowjob is?" I asked her.

"Umm... sort of," she said with a shrug.

"Let's switch," I told her. "I'll sit on the bed, you get on your knees in front of me. I promise it'll be fun."

Lucy jumped off the bed after Jenna as we swapped places. My cock was now pointing straight at my sister's face as she looked up at me expectantly. She actually seemed eager to learn as I instructed her to lick my shaft. Closing her eyes, she leaned forward and ran her tongue from the base of my cock all the way to the tip. A thin line of precum stretched between my cock and her mouth as she pulled back and licked her lips.

"It tastes really salty," she said before going in for another taste.

Jenna picked up the basics fast, and although she was only able to fit half of my cock into her small mouth, I was able to sit back and enjoy the incredible feeling of this incestuous blowjob. As she bobbed her head up and down, I ran a hand through her curly hair. I cupped the back of her head and gently but firmly pushed her down until I felt the head of my cock bump the back of her mouth. She did her best to work her tongue around my shaft as she sat obediently. The head of my cock slid a little deeper into her throat as I pushed her down a little further, but when she started to gag I let go of her and she pulled back coughing.

"Sorry," I said sheepishly, hoping I hadn't gone too far.

"Jerk," she scowled back at me. I breathed a sigh of relief however; I could tell she was just teasing me.

All of a sudden, Lucy pushed past Jenna excitedly, trying to see what was going on, and went straight for my cock. For a moment I was taken by surprise, having forgotten that she was even present. "Bad girl, get down," I scolded her as I tried to push her away, but Jenna started laughing. "She wants to help!" she said as she scooted to the side to make room for the dog. A protest died in my mouth as the dog pushed past my hand and began to lick my cock. Suddenly I realized why my sister had been so reluctant to make Lucy stop earlier.

The dog licked me frantically as Jenna ran a hand through her fur. "Good doggie," my sister encouraged her. "Does it feel good, Tim? I think she likes the taste of your cock." Amazingly, getting Lucy involved seemed to have turned my sister on quite a bit. At first, she sat and watched the dog work me over, but when she actually leaned forward and joined in again, I almost went through the roof.

I felt Jenna take the head of my cock into her mouth and swirl her tongue around the tip while the dog lapped at my shaft. My sister laughed around her mouthful as Lucy's tongue ran across her moist lips. She pulled back and joined the dog in licking my cock head, their tongues rubbing together as they shared me. Just then, I noticed Jenna's hand was busy at work behind Lucy. She was actually rubbing the dog's cunt as they licked me! That really set me off; I could hold back no more.

My first blast of cum took them both by surprise as it shot up against their tongues. Jenna let out a strangled "Eeek!" and jerked away, but my hand flew out to grab her head and hold her in place. Lucy seemed to barely missed a beat, however, and she continued to lick me as I came. The sticky white liquid was soon coating Jenna and Lucy's faces. As the last bits of cum oozed out of my prick, Lucy eagerly lapped it up, then turned to Jenna and began to lick my thick seed off of her face. Jenna closed her eyes and allowed the dog to clean her up. When Lucy was done, my sister did the same to her, licking the dog's cum-streaked fur before giving her a kiss on the nose.

"I had no idea you were such a kinky slut, sis," I said when they were done with each other.

"Maybe I am," she said naughtily. She still had two finger's buried in Lucy's pussy. "I guess you wanna fuck me, huh?"

Even though I'd just cum, I felt a wave of arousal wash through my body at her frank words; she was actually going to let me! My soft cock twitched slightly as I nodded. "Hell yes," I said breathlessly.

"Okay," Jenna said with a sly smile. "But you have to do something else first."

I nodded. She had me wrapped around my little finger; I'd have done anything. Her request should have surprised me, but for some reason it didn't.

"You have to fuck Lucy first."

An hour ago, I'd never have even considered having sex with my dog, but after having just blown my load across her and my sister's face, it didn't seem like that big of a deal anymore. What's more, the discovery that Jenna was just as kinky as me was really starting to turn me on. I'd happily help her with her animal fantasies if I could bang her all night afterwards. "Deal," I said.

At Jenna's signal, Lucy jumped up onto the bed. Stroking my soft cock idly, I took a look at her backside to see what I was getting myself into. Jenna ran a wet finger along the dog's pink opening; when she pulled it open to give me a better view, I had to admit to myself that it was starting to look pretty inviting. As Jenna's fingers probed her pussy, Lucy raised her rump higher up into the air, presenting herself to me.

"She's ready for you, Tim." My sister's voice was filled with unbridled lust. Then, apparently not content to wait for me, she leaned in and buried her tongue in the dog's cunt, moaning as she did so.

My cock sprang back to life immediately, but I allowed Jenna to eat out Lucy for a bit before I told her to step aside. Licking her lips, she slid over, and I moved to stand in her place. Save for her wagging tail, Lucy stayed perfectly still while I rubbed the head of my cock against her lubricated opening. Then, slowly, I pushed into her. It felt simply amazing; the velvety walls of her cunt were incredibly warm and tight around my throbbing member. Lucy's tail thumped against my stomach as I sank in to the hilt. I savored the feeling for a couple of moments, then I began to thrust in and out. I couldn't believe it; I was actually fucking my dog.

"I can't believe you're doing it," my sister said, crouching down next to me and peering between us.

I tried to make sure Jenna got a good view of the action, but for the moment I was actually more focused on Lucy's hot little hole. Now that I'd crossed this line, I couldn't believe I'd never thought about trying it before. My hands ran along Lucy's back before moving down through her warm fur and gripping her flanks. Her insides felt like hot silk as I pulled her closer to me while simultaneously thrusting forward, driving my cock deeper into her. The dog remained still and obedient as I began to hump her faster and faster.

Squatting next to me, Jenna pumped her fingers into her pussy furiously as she watched the act of bestiality occurring on her bed. With her free hand she reached out and cupped my balls, giving them a gentle and encouraging squeeze. I felt her index finger trace the outside of the dog's sex, rubbing against my shaft as it did so, and nearly exploded right then.

"Are you gonna cum?" my sister asked as she fondled me; perhaps she could sense it.

"Uh huh," I grunted, wishing I could keep going forever but knowing that I was quickly reaching my climax. Slamming into Lucy a bit more forcefully than I meant to, I buried myself as deep as I could in her doggie cunt and prepared to let loose. Jenna gave a short gasp when she felt my balls twitch in her hand, and my vision turned white as I dumped my seed into the willing animal and had the most intense orgasm of my life.

Once I had finished and pulled out of her, Lucy wasted no time in turning around and licked my spent cock clean; I wanted to imagine it was her way of thanking me. When she was done, Jenna climbed up on the bed and made her roll over on her back. "Good dog," my kinky sister cooed again, rubbing the dog's tummy before spreading her legs apart and admiring her freshly fucked pussy. She smiled deviously before diving in again, worming her tongue into the dog's pink hole in search of my cum.

"Yummy," she said when she had gotten as much of my cum out of the dog as she could. Then she crawled up along Lucy until they were eye to eye and kissed her. Lucy licked her lips playfully, and Jenna opened her mouth, allowing the dog's tongue inside. Her wanton display was one of the hottest thing I'd ever seen.

"So I can fuck you now?" I asked, reminding Jenna of her promise. Still tongue-locked with Lucy, she simply moaned and wiggled her ass at me provocatively.

I was sure it'd take me hours to get ready to go again, but seeing my sister in such a vulnerable position really put me into overdrive, and I knew I had to take her right then and there. Jenna squeaked as I jumped onto the bed and took up position behind her, probably surprised that I was going to take her up on her end of the bargain right then and there, but not protesting. It had barely been three minutes since I'd finished fucking Lucy, but by some miracle my dick was already rock hard again as I gripped my sister's cute little butt and rubbed the tip up against her slit.

My dream was finally about to come true, but I wanted Jenna to be as into it as I was, so I decided to try pressing some of her new buttons. "Making out with her turns you on, doesn't it, you little doggie slut?" I teased her. She moaned again, and I could tell the dirty talk turned her on. "Did you like eating your brother's cum out of her cunt? Maybe she'll do the same for you."

Another moan, then she turned her head slightly and said "Just fuck my brains out already, jerk."

That was all I needed to hear. My long-time fantasy came true as I placed my hands on Jenna's slender hips and penetrated her. There was some initial resistance, but when I pushed more forcefully, my cock slid easily into her. This elicited a strangled whimper from Jenna, and I realized I had just 'popped her cherry.' A sort of masculine pride swept over me at the thought of having taken my little sister's virginity, but I gave her a moment to recover from the pain she must have felt before I began thrusting into her further.

"Your cunt feels so good, Jenna," I said, trying to make her feel better. "Can I keep going?"

Lucy licked happily at Jenna's face as she lay sandwiched between me and the dog. "I'm okay," she said in a small voice.

Even if she said no, I had to admit to myself that I probably wouldn't have been able to stop; I'd fucked our dog for her, and now I was going to get my reward. Jenna gave another slight whimper as I began to pound her. At first she just lay still as I sated my incestuous lust on top of her, but gradually she began to react to my forceful strokes. A couple of minutes later she was really into it, and she began to return Lucy's affectionate doggie kisses while arching her back and pressing her ass up against me. My hands began to explore further up her body, pushing up under her thin nightie and groping at the small buds on her chest. Her mouth stuffed with Lucy's tongue, Jenna moaned as I pinched her hard nipples.

As I felt myself getting ready to go off, a small alarm went off in the back of my head. "Uh... you're on the pill, right?" I asked, suddenly realizing how careless we had been. Jenna simply gave a non-committal shrug.

What the hell, I thought. I've already come this far, it's not like I'm going to pull out now.

The sound of flesh slapping against flesh filled the room as I fucked Jenna roughly. She must have been able to sense that I was about to finish, because she pulled away from Lucy and said "Do it, big brother, give your little slut her hot spunk."

"Fuck," I said, too loudly, as I felt myself explode inside of her. I gave Jenna two final, powerful thrusts, sinking myself all the way to the hilt and holding there. My slutty sister squirmed underneath me as I pumped her spasming pussy full of the cum she'd begged me for. It was just as amazing as I'd always imagined.

My third and final orgasm for the night subsiding, I pulled my softening cock out of Jenna's hole and admired my work. Jenna rolled over onto her back, a look of pure contentment and sexual gratification in her eyes, and spread her legs as wide as she could. Sure enough, Lucy climbed to her feet and made a bee-line for my Jenna's oozing slit. As the dog began to lick her cum-filled pussy, Jenna placed a hand on Lucy's head and looked at me.

"Well Tim, who's pussy felt better?" she asked me with a lazy smile on her face.

I thought about it for a moment; both of them had been amazing. "I dunno, sis, I'll have to try them both again."

Jenna rolled her eyes. "Yeah right, loser," she said, but we both knew now that her pussy was mine.

___________________________________________________________________________

It was a couple of days later. Although we hadn't gotten a chance to fuck each other since that first night, I had demanded that Jenna allow Lucy to sleep in my room every other night, and she had agreed with a mischievous smile on her face. Today, however, Mom would be working late. My cock was already pushing uncomfortably against my pants as I raced home, knowing that Jenna would be waiting for me.

Slamming the front door behind me, I threw down my books and went straight for Jenna's room. When I flung open the door to her room, however, I was completely unprepared for the sight that awaited me. There was Jenna, lying on her side on the floor, completely naked. Over her stood Max, our other dog. Cum dripped down her chin as my sister unwrapped her lips from around his shiny red cock and looked at me with an expression of pure lust.

"I couldn't wait."

My cock literally jumped out as I undid the buckle on my pants. This was going to be awesome.