Neri Neri had always been a gymnast. When she was five years old she rationalized, correctly so, that gymnasts require the most complete set of physical skills of any sport. Flexibility, coordination, and quickness not to mention hand to eye coordination, timing and last but not least, great strength to bodyweight ratio. (She didn't say it that way, she just thought they had to be strong to do that stuff.) My step-daughter excelled in every aspect of her sport, and in addition to her brute strength, she had what is known as explosive strength, when all strength resources are brought to bear in a concentrated instant, creating a muscular reaction that can only be described as explosive. Some of her jumps looked to be six feet off the ground, if that's possible. At 10, when she beat her fifteen year old step-brother in arm wrestling, I took notice. Luckily, she wasn't the bullying type so she didn't start picking on him. By the time Neri was 12, she was 5'1" about 100 pounds of power, and when she beat me at arm wrestling, I figured it was time to get back to the gym. Then, tragedy struck. Well, not really, but just as Neri was really starting to reach the Upper echelon, gymnastically, another explosion occurred. Her breast sprung out of her just in just a matter of months. On most, that would have been too much, but she was such a great athlete that it didn't seem to affect her. Then another explosion. She shot up to 5' 9". This proved to be too much. It wasn't that she couldn't do the gymnasts stuff, she was still the best. She only weighed about 135, but when she landed from, say a vault, or during a floor exercise, no matter how graceful, she made a louder thump than the more pixie like girls. She started getting marked down. She quit gymnastics in frustration. She was tall and willowy, certainly stronger than the average woman, or average man for that matter. But my step daughter just seemed to lose interest in sports and staying fit. In September, off she went to college. Over those 6 years (from when she was 12 till she left for college) I had worked out regularly, and was certainly stronger than average and in better shape than most guys half my age. But I still drank beer and even though I had good muscle and definition from the chest up, I had a gut. About the beginning of April, I decided to step up my workouts and stop drinking beer. By mid June you could see my abs, which I knew were there, but previously couldn't see. I had been staying somewhat covered up until I met my goal. Neri was home for the summer, and to my disappointment she seemed to have gained the freshman 15. She stayed in her room mostly, and was somewhat subdued. Sometimes she would come down and spend the evening with my wife and I, as she was doing tonite. Since Neri had become an adult, (physically at least), there had always been some unspoken sexual tension between us. In the past, she knew she looked just great in a low cut tank top and she had a tight round ass that gymnasts have, and she liked flaunting her stuff in front of any guy, myself included. I had no thoughts of allowing our relationship to go down a bad path. But she liked to tease. So, tonight, for the first time I really looked good, and I thought I'd reveal my strong, well defined body to my wife, and it didn't hurt that Neri was there also. I removed my shirt to ohhs and ahhs. After they stopped, my wife said she couldn't wait to get her hands on me, and faking a yawn, said she was going up to bed. "Hang on Mom" said Neri. "I have something to show you guys too." Maybe she remembered an anniversary gift for us, who knows. She told us to close our eyes. While they were closed she quickly removed her baggy sweats. "Open your eyes." My God. Neri was standing there in a sports bra and very short very tight running shorts. During her year away she had transformed herself into a 5'9" power packed version of her former, littler self. Plus the big tits. After gulping, I stated that I had been afraid that she had gained the freshman 15 from poor eating and partying, like most freshmen. "No Daddy, I didn't. I gained muscle, and try 25 lbs. worth, not 15." (Holy mackerel, she is only 10 pounds lighter than me.) "I met this guy who incouraged me to start practicing gymnastics again, just for fun, not to compete or anything, and this is the result." Neri completely stole my moment. After small talk, Mom went to bed. The sexual tension between Neri and I had just quadrupled. Neri had always been hot, and she knew it. As I said before, I would never do anything improper with my step daughter, but no straight man could not notice what a great body she had. But , now. I've always liked muscles on women and Neri's Mom was very fit and toned. Now my step daughter was my living, breathing wet dream, right under my own roof. My wife and I had very passionate sex that night, but there's no doubt that when I ascended the stairs to go to bed, the boner I was sporting had to do with what I had just seen. I wondered if Neri knew the affect she had had on me. Over the course of the next few weeks, Neri wasn't wearing her baggy sweats any more, no, she was flaunting her body whenever possible. She'd most often have those same short running shorts on, but sometimes she'd also wear tanks without a bra. And her tits would stick straight out. One night she came down with a tank top on that she'd had when she was 12. It was her favorite. Very worn, and very small. She came down, giggling, acting all cute and innocent. I'm pretty sure she knew exactly what she was doing. Her big breasts stuck out on the top and the sides and the shirt was short and lifted up, revealing her hard abs. She bounced around the room like a little girl. She looked formidable, and I was starting to wonder if she might be stronger than me. At one instant, she caught my eye, and, ?busted. At that moment she knew the effect she was having on me. She sauntered out the room with that lower torso movement that only people with a really muscular trunk have, the twisting and turning of that muscular ass reflecting the power that lie within. The next night, Neri came down in her baggy sweats. "What give's with the sweats" said her Mom. "I thought you liked showing off your new body." "I have a surprise" chirped Neri. Oh no. Another? "Close your eyes". When we opened them, there was Neri doing a handstand, in the leotard she used to wear when she was 100lbs. Her muscular butt all but swallowing the back of the leotard and when she bounced to her feet and turned around, just about the only thing covered on top were her nipples, and the bottom rode up so high that her powerful thighs and hips were completely exposed and it was so tight against her crotch, that you could tell she was clean shaven. I was so overcome that I was shaking. I'm sure I had a hard-on, but my head was swimming so I can't confirm that. Neri's mother said that that was a bit much, or rather a bit not enough. Then Mom turned toward's me. "Dear, don't you think that's a bit too exposed." "What's wrong dear?" I was white as a ghost. "Oh, don't worry Mom. Stepdad's just got the hots for me. He always has, since I got these", she said, thrusting out her boobs, as if they needed thrusting out. "But, you know, he's always liked your muscles and I'm quite a bit more muscular than you. Yeah, I think he really likes my muscles, don't you, Stepdaddy?" She turned and looked me in the eye. "Look Mom, he's almost shaking he's so beside himself." Neri, looked over at her mother, who was getting tears in her eyes. "Oh, I'm sorry Mom, I didn't mean to upset you. Look, Stepdad's not the only one who thinks I'm hot. After all he is a man, and rest assured Mom, he's a good man who would never cheat on you and would never do anything unseemly with his own step-daughter". With that, Neri bounded out of the room and up the stairs to her bedroom. She was right about everything, but the idea of her being stronger than me didn't come up. After all, I was in great shape, and strong. Not some little schmoe. It was still difficult having this perfect specimen around all the time, and usually pretty scantily dressed. But the summer wore on. Neri and I got along great as usual, though the sexual tension was still there. One night Neri asked me if Ben could come over and go down to our rec room in the basement. Her mother was not home for the evening, and that's why she was asking me. She and Ben had dated in high school and I think they slept together but I didn't know for sure. "I don't think I like the idea of you 2 alone together." "Oh, Daddy, first of all, you know I've had sex in college and besides, it's not that. I want to use my gymnastics mat. Ben's going to teach me to wrestle. (Ben was Allstate in wrestling in H.S.) We used to fool around a lot, but now that I'm bigger, I think I might do better. And besides, I'll set up the camera so you can watch us on TV up in the living room." Okay, dear. Ben arrived a little while later and they went down to the basement. Neri was a little more covered up than usual, with a long sleeve zipper front sweatshirt and shorts, but not the usual skintight ones. I thought it odd that she had no modesty around me but was dressing more conservatively for him. Ben did however, notice and make mention of her legs looking more powerful than before. I went over and turned on the TV, which Neri had hooked up to the camera. After about ten or fifteen minutes of wrestling, Neri had done well, but was, inevitably I suppose, on her back with Ben turned perpendicular to her across her shoulders getting ready to pin her. Gymnasts, and other very fit people do this thing I think is call a kip-up. You bring you legs up over your head and then thrust the forward, arching your back and kicking legs forward and up with enough power to land standing up. As Ben was about to pin Neri, he said, "Ha, I win again, and the victor goes the spoils. After I stick my dick in your mouth, I'm gonna screw you silly." I was about to rise from my chair to go save her, when the most unbelievable thing happened. While mostly pinned, Neri brought her legs up and exploded into a kip-up, carrying 170lb. Ben along with her, and then leaping up, higher than most people can jump while empty handed, and body slammed him on his back with her 160 lbs. of hard muscle landing crossways on top of him. She instantly jumped up and did a back # flip landing hard on him again. She was so fast that he had no time to react. Then she jumped up again and did a twisting flip that landed her on top of him again, this time aligned the same way face to face with Ben, who appeared out of it at this point. I sat there in stunned silence as Neri looked up at me. "He had it coming Daddy. Pretty cool, hugh. That took less than 5 seconds." She lift her upper torso on her arms and said, "Daddy, I'll tell you later why Ben deserved this, but right now I'm in a zone, and I'm not finished with him yet. And Daddy, please don't mind, I get kinda' worked up when I'm doing this, if you know what I mean. As she said that, she slid herself up Ben's body using just her arms, dragging her crotch over his face from chin to forehead, moaning as she went. I felt like I should stop watching, but I couldn't tear my eyes away. Neri bounced to her feet, unzipped her sweatshirt, revealing her too small tank top from times past, and then peeled her shorts off revealing a new pair of short shorts , pink and as small and tight as possible, her muscular torso pushing the fabric to its limits. As she walked towards the camera, as if it was me that she was revealing her body for. Ben was starting to come around."See Daddy, I didn't hurt him, ?much, ?yet. He's pretty tough. He was an all state wrestler." Ben stood shaking the cobwebs out as Neri gave me a Cheshire Cat smile. With her back to him, she launched into a backward handspring, her powerful arms launching her so he that her torso was even with his, but upside down. Ben threw his arms up in defense. Perfect. Neri grabbed him in an upside down bear-hug, then twisted with such force that she turned them both 360 degrees, with him again being slammed down on his back, and her magnificent trunk slamming down on top of him with teeth shattering intensity. Neri bounced to her feet. Ben lay on his back, not moving. Neri grabbed his legs and pulled them up over his body, then taking his arms and wrapping them around his legs. She grabbed his hands in hers, completely controlling his whole body as she spread her legs to the sides and sat down on his face. She then fell back, wrapping her legs on either side of his head as she went and lifting his entire body off the ground. She held his upside down above her while she ground her crotch against his face. To make things even more unbelievable she let go with one hand so she could fondle one of her breasts, so she was holding his bodyweight above her with one hand. It was clear that she was on the verge of an orgasm. Suddenly, she arched her back, lifting poor Ben even higher. As she orgasmed her entire body went rigid and you could see every muscle fiber. Her legs wrapped hard around his head as she writhed and twisted from one side to the other taking his head with her. As Neri came down from her high, she loosened her grip and Ben fell to the floor in a heap. Neri lay there for a while, basking in the afterglow. Finally she got up. Seeing Ben lying there started another fire in her. She practically ripped her pants off leaving her in just a thong, and she recklessly pulled her top over her head. I gasped at the site of tits so perfect that they could only belong on a body so perfect. What's she going to do now I wondered. Neri was panting now. She slowly walked over to Ben and gently rolled him on his back. She sat down on him and started to brush her breasts in his face. As Ben came to he found those awesome tits in his face and he reached for them. Quick as a wink Neri was off him standing and fondling her tits. She was acting very seductive and was panting loudly, and Ben probably thought he was finally getting what he came for. He stood up, and reached for her tits, but she grabbed his hands and easily stretched his arms out to the sides. Holding him almost immobile, she started rubbing those awesome boobs on his body again. Battered and bruised as he was, Ben was in heaven. She let go of his arms. Just as he reached again, Neri reached under his armpits, picked him up a few inches off the floor and started running full speed across the room taking Ben along for the ride, almost at arms length. When she was about 3 feet from the wall, she launched herself at the wall, taking Ben along with her, slamming him between the hard wall and her hard body. She then backed up and slammed him again, her breasts again in his face, but this time hitting him like a couple of medicine balls thrown from across the room. She did this a few more times and I think she had another orgasm, then she let go and backed up a little, standing, fondling her breasts as she watched Ben slowly sink to the floor. Her hand went to her crotch and she quickly brought herself to another. Neri picked Ben up, actually just grabbing his shorts with one hand and threw him into the middle of the room. He lay there, spread eagle, on his stomach. Neri was still panting like an animal. She walked over to his head and sat down in front of him, spreading her legs to the sides. She lifted his head and pulled it into her crotch still face down. She then wrapped her legs around his arms and began to ride him. It had to be uncomfortable for him with his neck bent back. Neri the reach forward as far as she could and grabbed his legs. She flung herself backwards so her back was arched and the top of her head was touching the floor. As she rubbed her pussy in Ben's face, she became more and more frenetic in her movements. She arched up off the floor, her head tilting backward, staring upside down at the camera, or would have been if her eyes were open. Her tits stuck straight up in the air and Ben was again revived and screaming as Neri's erotic position was causing him to be bent in half backwards. And then, again, Neri let go with one hand so she could fondle herself, holding his lower torso bent and secure with one just hand. Suddenly, the TV screen went black. I was left to sit there and think about what I had just seen. I was a strong fit man, but after what I had seen, it was obvious to me that my step-daughter, my little Neri was many times stronger than me and had all the physical skills of a world class gymnast in a 5'9" 160 lb. luscious body. A little while later, I heard footsteps coming up from the basement. Ben was walking, barely, with his arm over Neri's shoulder as she helped him to the front door. She let him out and closed the door behind him. I thought I heard a muffled thump as he fell without her holding him up. Neri was once again wearing that too tight tank top and those booty shorts. I went instantly hard looking at her. She smiled at me, again that knowing smile that said she knew the effect she was having on me. When I finally was able to speak, I asked the obvious. "Where did you learn to do all that stuff?" "Oh, Step-daddy, (she alternated between calling me Daddy, when she wanted to act like my little girl, and Step-Daddy when she wanted to emphasize that we weren't related.), don't you remember that I was a gymnast. Let me remind you. The average 85 lb. gymnast girl is probably as strong as her 170 lb. father, if he's an average guy. Elite gymnasts are surely stronger. By the time those girls reach high school age and have grown to say 120 lbs., give or take, they're all way stronger than their dads and their boyfriends, unless they're boyfriends are huge football players. But most of us didn't date football players because most of them are self centered ass-holes. Anyway, most of those gymnasts can do pretty much anything physical better than 98 per cent of the population, whether it's flexibility, coordination, quickness, and especially, strength. Now, Step-daddy, take all those superior physical assets and put them in a 5'9" 160 lb. body and you have?.Me." I just sat there, taking in her raw physical appeal and contemplating the idea that this 18 year old girl was so superior to the average or even above average person as to be from a different species. "Oh, by the way Daddy, other than fooling around with Ben a little, in the past, I've never really wrestled. This really was my first time. I had no wrestling skills. I just thought I'd try improvising with some of my gymnastic moves, taking Ben along for the ride. After I successfully executed that first kip-up while holding Ben across my chest, well, then I knew I could do just about anything." I gathered myself enough to ask, "What did Ben do, why did he have it coming to him, as you said?" "Well, a couple of years ago, we were fooling around, sort of play wrestling. He was 45 lbs. heavier than me, but because of my gymnast strength, I was able to put up a good fight. Still, he was able to pin me on my back. Then he forced me to suck his cock. After I was done, I ask if he was going to return the favor. Ben said "Hell no, sexual pleasure is something women give to men, not the other way around." I guess he thought that was going to happen again tonight, judging by what he said just before I went into action. I thought he needed to learn a lesson. Actually, a few. First, I am superior to him, as are a lot of women, especially gymnasts. I was able to destroy him in his sport the first time I even tried it. Second, Step-Daddy, he needed to learn that sexual pleasure is something that should go both ways." Neri moved seductively towards me. "But you already knew that. Mommy said that you are a wonderful lover who always puts her pleasure first." "My God, she shouldn't be talking to you about that kind of stuff, what else did she say." "She said you have a very talented tongue and a very large cock." Neri moved closer, standing right in front of me, her glorious breasts, in front of my face, stretching the thin fabric of her favorite old tank top, her hard as a rock abs flexing and relaxing with her breathing. I was shaking with anticipation, thinking that she was about to find out for herself what kind of lover I was, and if so, I wouldn't be able to stop her. She leaned over, her breasts almost touching my face. "Step-Daddy, let's keep what you saw tonight our little secret. I know Ben won't be telling anyone." Then she kissed me on the cheek, and jumped up, bouncing her way towards the stairs to go to her room. She gave me one last look, then launched herself at the stairs, jumping 4 or 5 steps at a time all the way to the top.. Unbelievable. In addition to all her superior physical skills, how could she still have so much energy left after what she had just done to Ben along with having at least 4 orgasms. I sat there, digesting everything I had seen that evening, then my mind wandered to the one thing that didn't happen. Neri had teased me again, and now I was thinking about having sex with my own step-daughter. I knew it was wrong, but here was the most perfect physical specimen I had ever seen, and as a healthy heterosexual man, I couldn't help contemplating what it would be like. My cock was raging hard, and suddenly, without even touching it, I exploded in my shorts. I must have moaned loudly as I came, because, as I wound down, I could hear giggling coming from the top of the stairs.