Note: This story was dynamically reformatted for online reading convenience. An FMF Threesome With My Sis My older sister, Jessica, had changed since her brief marriage and subsequent divorce. My parents pretended not to notice, perhaps because they preferred a quiet, distantly dutiful daughter to the wild woman who'd eloped out of a second story window two years before. My reasons for missing the old Jessica were predictably selfish. With my sister seriously calmed down, my parents had more time to concentrate on my sexual indiscretions. At the time I'm talking about, I had just become involved with two different girls. Samantha was a "nice" girl from my college classes with a seemingly tireless mouth. And Dianne was a local resident "townie" with humongous tits and a "nasty" attitude to match. Neither girl knew about the other, although it took some interesting juggling to keep it that way. The situation came to a head when my parents left town for the weekend, and I made the mistake of mentioning it to both Samantha and Dianne. Both girls separately came up with the idea of dropping by for a "surprise" visit. Well, it was a surprise, all right. My face got slapped from both sides before the two of them stomped out in different directions. Jessica heard the commotion, of course. She slipped down the stairs when it had quieted down, only to find me sitting on the sofa with my head in my hands. "You've got to slow down, Mark," she said as she sat next to me and draped a comforting arm about my shoulders. It wasn't meant to be a sexual gesture, but I'm a healthy man of 22, and Jessica wasn't wearing anything except the nearly-transparent silk kimono that was practically her uniform around the house. When she was that close to me, I couldn't help but see the dark outline of her proud nipples through the thin fabric. "I'm too young to slow down Sis," I grumbled, turning slightly. My face was much too close to those tempting tits, which appeared to be a pair that could stand up to Dianne's any day of the week. I tried to hold my breath for a moment, but I couldn't stop myself from becoming a little dizzy from the musky scent of my sister's perfume. Jessica shivered, and the fine hairs on her bare arm stood up. I found myself wondering when she'd last had sex. My older sister had been a once-a-day woman before her marriage, but lately she hadn't even been bothering to answer the phone. Her fingers tightened their grip slightly on my shoulder as I moved a fraction closer. "Those were my plans for the weekend that just walked out the front door," I whispered. "And, I know that you haven't been going out for a long time. So, what are we going to do to entertain ourselves, sister dear?" "Not what you're thinking!" Jessica snatched back her arm and gave me a sudden shove. The very intensity of her action and the sly grin on her face told me that she'd been secretly, guiltily considering the same thing I was. "Why not? We're both horny. No one will ever know." She stood, clasping her arms in a bundle in front of her abundant boobs. "It isn't right!" "And it is right to flash your naked body at me through that filmy robe? It's right to make the spunk build up in my balls until they're ready to explode?" Her lower lip pouted out in a soft, sensuous gesture. It was a pose, one I could easily see through. She wanted me to think that she could resist me, but she also wanted me to find her irresistible. It was a dangerous game that my sister was playing "Do I really make the spunk build up in your balls, little brother?" she asked. "Or is that just a line you spin to all your women?" "Come here, and let me show you, Sis!" She made as if to head for the stairs and turned on her toes at the last moment. And then we were in each other's arms, our trembling bodies struggling to fuse together through our clothes. Our lips met in a long open-mouthed kiss that took my breath away. Jessica undressed me more rapidly than she meant to. I could see my sister's lust mount as she opened my jeans. A soft, glistening drop of saliva glimmered on her lower lip as she knelt for a good look at my rapidly-rising cock. "No, no, no!" I said, playfully waggling a finger at her. "No touching until you're naked too." Jessica stepped back and tugged at the silk cord that held her kimono closed. The robe gaped, and the next thing I knew she was naked "Kiss me," she whispered. I pulled her down on top of me on the couch so that I could hump the long loveliness of her silken body as I sealed my lips around hers. Our tongues engaged in a soft, sensuous dance that made the blood pulse in my veins. Her flat, firm belly jerked slightly, tickled by the small drops of lubricating fluid that were oozing out of the head of my cock. "Ohhhh, Mark, honey! Let me suck it," she murmured. My sister's weight shifted on the sofa until she had her head in the right position. I felt like a pampered emperor of old as I simply lolled back on the black leather and savored the feeling of Jessica's lips sucking on my bloated cockhead. She seemed to have an instinct for it, teasing the tip of her tongue against exactly the right place at exactly the right time. It soon became too much for me to bear. I wanted to plunge my cock into her tight, juicy wet cunt. "Let's fuck, Jessica!" I begged. "I'm not going to be able to hold out much longer!" She giggled, actually giggled, for joy. Do you know how long it had been since I'd heard my sister laugh? I felt like singing with happiness when her small, tight pussy slowly descended onto my shaft. Our fuck started out normally enough for a classic case of brother-sister screwing, but it quickly transformed itself into something wild and crazy. Although the sofa was nearly new, it groaned and creaked under the violence of our mutual thrashing. Jessica could contract her inner pussy muscles until her twat was squeezing me like a tight, hot fist. She started cumming first, but I was right behind her. She clutched at my chest as she sat up straight to jam hard on my shooting dick Her mouth opened into a perfectly round O as she yelped out in pleasure with every spasm. The two of us drifted into a light sleep with Jessica's naked body still resting atop mine. I wasn't really completely asleep, because I was constantly and delightfully aware of the warm, pleasant weight of her. Jesus, I'd just fucked my own sister! Who ever would have believed that it could feel so good? The doorbell rang. "Mmmm?" Jessica said, lifting her pretty head. Her eyes were still half-closed. She looked utterly vulnerable, utterly fuckable. A fresh supply of hot blood rushed to the head of my semi-hard cock. Then there was a knock. Whoever it was at the front door just wasn't taking the hint. I shifted lazily underneath my sister, but she placed a long finger against my lips and mouthed the words, "Ignore it." That sounded good to me, but I really should have remembered that Samantha and Dianne hadn't bothered with locking the door behind them when they left. All of a sudden, the knob was turning and the door was opening. I was too shocked to move. Not that I could have gone very far without knocking poor Jessica down to the floor. There was just no two ways about it. My sister and I had been well and truly caught! Dianne's eyes went as round as Jessica's had during her orgasm. "I... uh... I came back," she said, rather stupidly. (Well, we could all see that, couldn't we?) "I mean, your friend said all she did was give you head and I figured that wasn't any real competition with me." She took another look at Jessica and me. "Damn it, Mark. Is that your sister? Have you been fucking your sister, too?" Jessica finally regained enough of her senses to roll off my body and stand up. Of course, when she did that, she also revealed the throbbing, quivering hard-on that I'd recently developed. Dianne gasped and took a step backward. "It's all right, Dianne," Jessica smiled. "I'm not competing with you, either. I'll never be a serious girlfriend to my brother. We both just needed a good fuck because we were frustrated and lonely. After what happened between you and Mark, I didn't think you wanted him any more." Dianne kept opening and closing her mouth like a kissing fish. It might have been easier for her to concentrate on what Jessica was saying if my sister had bothered to put her robe back on. Instead, Jessica surprised both Dianne and me... she suddenly knelt at Dianne's feet and gently pressed her face into my girlfriend's crotch! "I can make it up to you, Dianne," Jessica whispered. "I can make you feel real good about my relationship with my brother." Dianne shot me a wild look that I couldn't interpret over my sister's bobbing head. If she expected me to put a stop to Jessica's antics, she was out of luck. I'd heard the rumors about my sister's bisexual nature during her wild woman days... but I'd never expected to see a sample for myself. If Dianne didn't watch out, I was going to help Jessica pull her out of her clothes. As it turned out, Jessica didn't need my help. Dianne began to squirm rather helplessly as Jessica rubbed her lips at just the right spot on the front of Dianne's jeans. Trust another woman to locate a girl's clitoris through two layers of clothing. I relaxed and stroked my cock, keeping it nice and hard for whatever might develop. Dianne suddenly reached down and pulled off her jeans, and impatiently ripped her panties down so that Jessica could get at her naked pussy. "Have you ever seen a live lesbian sex show, Mark?" Jessica asked me. "I can't say that I have." "Well, consider it part of your liberal arts education!" With those words, she finished stripping Dianne down to bare skin, and laying her on the carpeted floor. When the two of them cuddled side by side, I could see that my previous speculation had been entirely right. Jessica's boobs were just the same size as Dianne's. I probably hadn't allowed myself to notice before today only because Jessica was, after all; my own sister. The girls kissed and hugged, their tender hands caressing each other's curves in a truly loving manner. Dianne had never been quite that sensitive toward me. Had she been rougher than necessary because she thought that's what I wanted? I was fascinated by this glimpse into the other side of my girlfriend. Her mouth seemed to tremble in genuine pleasure when Jessica showed her how to curl up on the carpet in a side-by-side lesbian sixty-nine. Even though I'd fucked my sister hard and fervently, my cock hadn't been able to stay down for very long. By this time, I was achingly desperate for a mouth, a pussy, or anything! The sight and sound of the two sexy girls sucking each other was more than a man could bear. Knowing my sister's old reputation, I guessed that she was better prepared to be the middle of an all-meat sandwich than Dianne was. That's why I approached her from behind to give her tight little pussy another fucking while she continued to slurp and suck on my sexy girlfriend. Dianne moved her mouth to Jessica's clit as I stuffed my prick into my sister's cunthole. Small ripples moved visibly in her pale flesh as she lost the rhythm of her darting, probing tongue. Distracted by the taste of twat in her mouth and dick in her cunt, Sis quickly kicked into yet another orgasm. Dianne, however, wasn't far behind her, judging by the desperation of the muffled sounds of pleasure she was whimpering into Jessica's cunt. Poor Dianne. She didn't know how to cum and lick pussy at the same time, so her tongue strokes were getting pretty sloppy. But it didn't really matter, because both girls had a real talent for cumming. Jessica would cum, then Dianne, and then Jessica, and then Dianne again. It was a minor miracle that they hadn't triggered me off too soon inside Jessica's cunt, but I somehow managed to save something for Dianne. After each girl had experienced an orgasm (or twelve) in that position, I switched around so that my dick was deep inside of Dianne instead of Jessica. The view was a little different, but the cries and whimpers of ecstasy were much the same. Dianne didn't usually milk a man's dick with her pussy muscles the way Jessica did, but she was doing it unconsciously this time simply because of the way all her orgasmic spasms affected her twat. It was ripple and squeeze all the way. After I finally shot my load into Dianne's quivering pussy, we all just sort of died right there in the middle of the living room floor. My sister cuddled up on one side of me while Dianne snuggled under my arm on the other side... and we all fell asleep. I awoke about a half hour later to find Dianne's head buried between my sister's legs, and a satisfied grin on my now-awake sister's face. Jessica reached out to give me a gentle kiss before laying back to enjoy Dianne's attention. I rested on one elbow and watched as little ripples went across my sister's belly and face... indicating her bodily reactions to Dianne's well-placed tongue and lips. I leaned over and took one of my sister's breasts in my mouth... and sucked it in as one of my hands reached out to cup her other full breast. She stroked my hair as Dianne continued to slurp between Jessica's thighs. Soon Jessica wrapped her legs around Dianne's head and she convulsed in yet another orgasm. The women fell back to sleep again, this time with Dianne laying in Jessica's arms, between Jessica and me. I curled up behind Dianne and slipped my again-hard cock into her pussy from the backside. As the ladies slept (or pretended to be asleep) I gently pumped into Dianne for a long time. I shot another load into her before falling back onto my back. An hour later, my mind was a washed-out blank. It understood nothing except the perfect golden glow of a well-fucked cock. Again, two girls lay naked on either side of me, one of them my girlfriend, and the other my own sister. I decided that I had to be the luckiest man in the entire universe. Later that afternoon we all three showered together, and grabbed a bite to eat before we all three climbed into Jessica's bed for another round. This time Jessica and Dianne were in the 69 position, on their sides. Again I spooned up behind Dianne and entered her pussy from behind. This time I could feel my sister's tongue gliding over my cock each time she licked over Dianne's clit. Finally, Jessica reached out and cupped my balls, drawing them right up to Dianne's pussy lips and driving me deeper into Dianne. That felt Soooo good! I kept myself from coming until I had to pull out to avoid spending myself too quickly. Jessica's tongue replaced my cock and plunged into Dianne's pussy, driving her into another impressive orgasm. A few minutes later, as I lay on my back, the two girls crawled over to me and took turns deep-throating my still-hard cock. Then they took turns nibbling the sides of my cock as the other sucked my nuts into their mouth. Finally Jessica climbed up on top of me and impaled her pussy onto my rigid boner. With that, Dianne climbed up and settled her very wet pussy over my mouth as she faced Jessica. The two women embraced in a hot kiss as Dianne lowered her pussy onto my waiting tongue. I could tell they were playing with each other's breasts as they kissed and rode my face and groin. Finally, Dianne climbed off my face, put a pillow under my head "so I could watch," and laid her head on my tummy, facing the junction of my cock and Jessica's clit as Jessica continued to gently ride up and down on my cock. I felt Dianne snake her hand under Jessica's leg and then under my leg... until she had my nuts cradled in her hand. She gave them a squeeze as I felt her hot breath close to the base of my cock. Soon she was giving long tongue strokes to my cock as Jessica lifted high enough for it to partially withdraw from her love tunnel. Then, as Jessica would sink back down on my thighs, I could tell that Dianne's tongue continued up over Jessica's pussy lips until she was sucking on Jessica's clit. This must have gone on for thirty minutes until I screamed out that I was about to blow. I thrust my hips up to bury my cock as deep as possible into my sister's velvety pussy, and exploded within her. Dianne bent closer to our combined crotches, and licked up my cum as it oozed out of dear Jessica. Before the night was over, I was able to get one more solid erection. This time I had the girls lay on the floor with their heads close together, and Jessica's legs and feet well away from Dianne's... in a sort-of A position. Then I lay on top of Dianne and entered her in the missionary position as she turned her face to kiss Jessica. Then I "swiveled around" so my cock stayed within Dianne and I was able to plant my mouth on Jessica's pussy. Quickly, Jessica got the idea. She rolled on her side to face Dianne, lifting her upper-most leg to allow my face to have full access to her pussy. As I buried my tongue between her still-moist pussy lips, she let her upper-most leg lower gently, trapping my head tightly against her pussy as I alternately dove my tongue in and out of her tunnel... and then withdrew it to lick over her clit. Meanwhile, my cock kept up a slow stroking in and out of Dianne's pussy. The girls drew the upper parts of their bodies closer, and I could hear them fondle and kiss each other. I "serviced" both women this way for what seemed a long time before I could feel Dianne's pussy muscles grasp my cock even harder as she enjoyed another climax. She must have been whispering the feelings into Jessica's ears... because, soon Jessica increased her leg-grip on my head and she ground her pelvis into my face as she came again too. That set me off, and I blew my remaining load into Dianne's pussy, and that brought another few involuntary after-shock contractions from her. After an hour or so of sleep, we all cleaned up, and Dianne dressed and left. Jessica fell into her bed and promptly fell into a deep sleep. I decided to go back to my own room for a well-deserved long night of sleep. Our folks returned home that next afternoon... so Jessica and I had to return to brotherly-sisterly decorum. Dianne and I still date, and I occasionally still see Samantha. Jessica and I have occasionally repeated our shared pleasures when the folks were gone... and twice shared an afternoon in a motel room with Dianne. It can be a draining experience for one guy and two horny gals... but I sure do enjoy it. They do too!