My Sister the Sex Addict (Family Chemistry Book 1) Read online

  My Sister the Sex Addict (Family Chemistry Book 1)

  My Sister the Sex Addict (Family Chemistry Book 1)

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  My Sister the Sex Addict

  Family Chemistry: Book 1

  Copyright 2015 by Richard Bissell. All rights reserved.

  Without limiting the rights under copyright reserved above, no part of this publication may be reproduced, stored in or introduced into a retrieval system, or transmitted, in any form, or by any means (electronic, mechanical, photocopying, or otherwise) without the prior written permission of the copyright owner and the publisher of this book.

  This is a work of fiction. References to real people, establishments, organizations, or locations are intended only to provide a sense of authenticity, and are used fictitiously. Any similarity to persons, living or dead, is coincidental.

  All characters depicted in this work of fiction are 18 years of age or older.

  Cover by Covero’rama

  1.

  I was home one Friday night when I walked into the bathroom adjoining my room to find my little stepsister Kim standing there in her underwear, stuffing toilet paper into her bra. She screeched in surprise when I opened the door.

  “Jeez, have you heard of knocking?”

  “Sorry.”

  I withdrew and shut the door, waiting until I heard her go back into her room. I took the piss I had intended to take before and then knocked on her door.

  “What?”

  I peeked through the door, seeing that she was dressed now. The spaghetti-strap top she had on stood out quite a bit more than usual, and the lumpiness of the TP was fairly obvious.

  “Kim, that looks really lame. Don’t pad your bra. Guys can tell, and they’ll just laugh at you because of it.”

  She blushed and looked down at her chest.

  “Seriously? Can you tell?”

  “Yes. It’s obvious as hell.”

  She let out a frustrated whimper and reached in to pull out the TP. She threw it angrily across the room and sat down on her bed.

  “So what am I supposed to do? I don’t have anything.”

  Kim was eighteen now, but she had always been petite, and her breasts were still no more than little A-cup lumps, if that.

  “Come on. It’s not that big a deal. Not all guys care about your tits.”

  She snorted.

  “Right. I see how they stare at Rebecca and her big boobs.” Rebecca was a friend of hers, who did indeed have quite a rack. “All my friends have tits, and I have shit.”

  I knew implants were the obvious option—this wasn’t the first time we’d discussed this—except Kim still fainted at the sight of blood and got pale if you even mentioned surgery. That was even if she somehow found the money for it, which wasn’t happening either.

  “Give it time. You have to get something eventually. I mean, look at Mom.”

  My stepmom wasn’t huge, but she had a lot more than Kim did.

  She whimpered.

  “There has to be something I could do to make them get bigger.”

  Kim and I got along pretty well, but throughout our adolescence, I had often amused myself by making up stupid things and trying to get her to believe me. I once told her that babies came from watermelon seeds, and for an entire summer, she refused to eat any watermelon no matter how much people offered it to her. I felt for her predicament now, but I couldn’t stop myself from capitalizing on it.

  “There might be something. I bet you’ve heard of it.”

  Her eyes lit up.

  “What?”

  “A guy’s sperm can make a girl’s tits grow.”

  Her eyebrows shot up her forehead.

  “What?! No way!”

  “I’m serious. Look at Angela Dennison.” She was another girl in Kim's grade, who was generally considered the biggest slut in the whole school. Coincidentally or not, she also sported a 36D chest. “How do you think she got so big? From sucking off half the guys in school.”

  I could see her trying to digest this idea.

  “Think of all the biggest sluts you know. They all have big tits, don’t they?”

  She panted nervously.

  Well . . . yeah, but—”

  “It’s because of that. The more cum they eat, the bigger their tits get.”

  “But how? I thought sperm just made babies.”

  “I don’t know. I guess it’s all the hormones and protein. Something in it stimulates breast growth.”

  I could see her wavering as she listened to me. She had wised up somewhat in recent years, but she still tended to fall back into her childhood gullibility whenever she got excited. Plus, with our local school district’s fixation on abstinence-only sex education, it was possible to graduate from high school without even a basic understanding of human reproduction—I’d figured that out since I’d started junior college two years ago and repeatedly run into girls who thought using a condom would get you pregnant in and of itself.

  “So what do I do? I can’t go sucking off all the guys I know.”

  “I don’t know. But that’s all I can think of. You asked.”

  I didn’t think she would do anything with this information, but it would be good for freaking her out for a while, at least until she thought to ask someone. Of course, she would probably ask one of her friends, and I knew that they tended to be pretty clueless about stuff like this. With any luck, the idea would be circulating feverishly by the end of the month.

  After class a few days later, I was lying on my bed studying when Kim came through the bathroom. She had a nervous look on her face, and she looked to make sure the door to the hallway was shut.

  “Jimmy? Could I ask you a really big favor?”

  “What?”

  “You remember what you told me the other night? About making my tits get bigger?”

  “Uh . . . yeah.”

  “Do you think I could have some of your cum?”

  I choked on my shock.

  “What?”

  “To make my tits grow. Where else am I supposed to get it?”

  “Forget it! No way! Get out of here.”

  “Come on, you’re always beating off in the bathroom. Couldn’t you just save some and give it to me?”

  My face flushed in embarrassment. I was pretty sure she had heard me now and then, but I didn’t like having it thrown in my face like that. For a moment, I almost confessed the lie, but then I realized that she would probably tell Mom everything, and Mom would then have a first class shit fit.

  “Forget it. I’m not beating off so you can have some of my jizz.”

  Her face darkened, and she glared at me.

  “If you don’t, I’ll tell Mom about how you and Bill were the ones who set off the stink bombs at school senior year.”

  That made my heart skip a beat. My friend Bill and I had acquired a box of stink bombs the summer before the my last year of high school, and we had set them all off at once in the boy’s bathroom the first week of school. But what we’d meant as a prank turned into a town scandal when the principal called the police, and the police department sent both the bomb squad and their SWAT team out to search the school. Bill and I hadn’t gotten caught–we managed to destroy any incriminating evidence—but the police made it clear the perpetrators were facing prison time if they were ever found. And I had been dumb enough to tell Kim about it afterward.

  “Kim, jeez, think about what you’re asking me to do here. This is fucking gross.”

  “What do you care what happens to it? You leave your nasty kleenexes on the floor anyway.”

  She had a point there.

&nb
sp; “Jimmy, please. My tits have to get bigger. They have to.”

  I lay there feeling my eyes bug out. What she wanted was nuts . . . but I had set this in motion trying to put one over on her. I fought with myself for a few moments, but I could see no way out.

  “All right. Fuck. Get back to your room. Give me a minute.”

  She went back to her room, and I followed her into the bathroom, pausing to grab my phone. I dropped my pants as soon as the door to her room was shut and squirted some lotion on my right hand.

  Jesus Christ, I thought, I guess I deserve this. I played with my dick while I flipped through my porn collection. When I got hard enough, I set the phone on the floor and pulled a Dixie cup out of the dispenser by the sink. I was playing a lesbian video on my phone, but I kept thinking about what Kim was going to do. I closed my eyes, letting myself think about having her there jerking me off, putting her little mouth over the head to catch the cum.

  It took me only a few minutes to get off, and I held the Dixie cup up to my dick. The jizz spurted out into the paper cup, filling it about a quarter-inch full.

  When I had pulled up my pants and washed my hands, I found Kim waiting on her bed. I gave her the Dixie cup, and a sick look passed across her face when she got a whiff of the contents.

  “There. Fucking be careful with that shit, okay? I don’t want you getting pregnant.”

  “Thanks,” she managed.

  I went back to my room, feeling disgusted with myself. A few minutes later, I heard Kim rush into the bathroom. Gagging and vomiting noises followed immediately thereafter.

  I got up to check on her, finding her sitting on the floor in front of the toilet, wiping her mouth.

  “You okay?”

  “I tried. I really tried, I did. I just couldn’t swallow it.”

  My dick twitched in my pants enough to make me ignore the twinge of guilt in my stomach.

  “Don’t worry about it. Just forget about all this, okay? Your tits are fine.”

  “No. I want to at least try it. Could you do it again?”

  My head swam. Once had been bad enough. Did she really expect me to do this again?

  “Uh. I can’t do it again this soon.”

  “But later? Like tonight?”

  I swore at myself.

  “I guess so.”

  “Thanks.”

  Kim appeared in my room just after eleven, when all the lights were out.

  “Jimmy?”

  “Jesus, Kim, are you sure about this?”

  “Yes. Please. I brought a Coke up from the kitchen to wash it down with this time.”

  We went through the same routine, and I gave Kim another Dixie cup of cum a few minutes later. This time I stayed to see what she would do. She spent a minute or two working up her courage, then tossed it all back at once. Her face seemed about to explode until she dumped half the can of Coke down her throat. She gulped a few times and then wiped her mouth.

  “Are you all right?”

  “God. That is so damn nasty. How can anyone do this?”

  “I don’t know. I guess you get used to it.”

  She wiped her mouth and then tried to clean her tongue off on her hand.

  “Thanks.”

  “No problem.”

  I went to bed praying that was the end of it.

  But it wasn't.

  I wasn’t sure what she would do after that, but sure enough, she came into my room after school the next day. I could see immediately from the look on her face what she wanted.

  “Kim, jeez. Wasn't that enough? Are we going to do this every day now?”

  “Please. I want my tits to get bigger. Just one time isn’t going to do it, is it?”

  I could have told her it would, except I knew she wouldn’t believe me. Her little tits had been an obsession of hers for years, and I had unwittingly given her an apparent solution. I could see in her eyes she wasn't about to let this go easily.

  I groaned and reached for my phone.

  “Thanks. This means a lot to me.”

  “Yeah, yeah.”

  For the next week, I jerked off twice a day and gave the results to Kim in a Dixie cup, hating myself for it but seeing no way out. Each time she struggled to swallow my cum and then washed it down with a soda. But after a week, I couldn’t stand it any longer.

  “That’s it,” I said when she appeared after school that day. “I can’t do this anymore.”

  “Why not?”

  “Look, I jerk off for myself, you know? To have a little private enjoyment. This is like providing laboratory samples. I’m sick of it.”

  “Jimmy, please. I need it. My tits aren’t growing yet. We have to keep doing it until something happens.”

  “Forget it. You’ll have to be happy with what you’ve gotten.”

  She stood there in the doorway and started to cry. I threw myself back on my bed in frustration.

  “Fuck. What do you want me to do here?”

  She sniffed.

  “Would it help if I helped you? Would that be more fun for you?”

  I sat up and gulped. I could tell from her face she was serious.

  “Helped me how?”

  “I don’t know. What could I do?”

  Kim and I, over the years, despite being step-siblings, had kind-of, sort-of, but not-quite fooled around now and then. I knew there were things we could do here, but most of them were way out of bounds. But maybe “helping” me jerk off wouldn’t be so bad.

  I took a deep breath. In for a penny, in for a pound.

  “If you did it, you know, jerked me yourself, that might work.”

  She took a few nervous steps toward me.

  “What do I do?”

  “Get the lotion from the bathroom and shut the door.”

  She ran back to fetch my jerk-lotion and returned to stand in front of me.

  “Kneel down.”

  She did. I dropped my shorts and sat on the end of my bed. My dick was already getting hard, and it was soon standing at attention under her nervous gaze. I took her hand and squirted some lotion on it, then wrapped it around my hard-on.

  She began to stroke, and I guided her movements. Oh, yeah. This was a lot better. Hand jobs were certainly nothing compared to fucking, but this was a whole lot better than jerking off. It felt good enough to cloud my reservations about this whole thing.

  I closed my eyes, trying not to look down at her. Kim was decent-looking, even if her tits were pretty small, but she was still my fucking stepsister. Her little hand kept stroking my cock in a steady rhythm, up and down, up and down. I positioned her again, getting her to concentrate on the head, and she began jerking the last few inches rapidly.

  It took me less than a minute to get close, then I realized we had forgotten something.

  “Shit. We don’t have a Dixie cup.”

  She didn't stop stroking me.

  “Are you cumming?”

  I grunted.

  “Yes.”

  As I watched in shock, Kim dropped her head down, opening her mouth and locking it onto the very end of my dick. She kept jerking me, and I grabbed at her head involuntarily, pushing my cockhead between her lips. Then I was squirting thick ropes of cum into her mouth.

  I expected her to jerk back in disgust, but though she squeaked and tensed up between my knees, she didn’t let go. She sucked on it to get the last bits, then withdrew. Convulsing once, she gulped it all down.

  “Shit,” I gasped. “Are you all right?”

  She nodded. After a few moments, she sat back to catch her breath.

  “You know, it doesn’t taste so bad doing it like this. It doesn’t taste like much of anything, really.”

  She continued working her tongue around her mouth to clear the cum away.

  “Was that better?” she asked. “If we do it like this now?”

  I tried not to think about what we had just done. Thank God Mom worked and wouldn’t be home until after six.

  “I guess so.”

&n
bsp; Kim climbed into bed with me that night when the lights were out. She already had a handful of lotion, and I guided her hand to my dick. It took some squirming around to get comfortable, but eventually she lay across my chest with her head on my shoulder.

  She lay quietly beside me, stroking my dick as best she could. It took a little longer than that afternoon, but when I signaled her that I was about to cum, she darted under the covers and took my dick in her hot little mouth. My cum erupted out of me, and she gulped it down as it came, pumping the last few drops out with her fist. Then she thanked me and scampered back to her room.

  2.

  A few afternoons later, Kim came rushing into my room after school.

  “Jimmy, look! I think it’s working!”

  She stuck out her chest to show me her tits. I didn’t see much of a difference.

  “I don’t see anything.”

  She whimpered in frustration. I felt a surge of guilt and wanted to make her feel better, and the words came out before I could stop myself.

  “Take your top off. Maybe I can tell better that way.”

  A frightened look shot across her face.

  “Or whatever. But, come on. You’ve seen my dick every day for the last month.”

  Hesitating only briefly, Kim pulled her T-shirt over her head and then removed her bra. Her pale little tits stuck straight out from her chest. She had puffy, eraser-tip nipples, but there was very little behind them. Still, looking at her this way, she did look a little bit bigger. Of course, I knew this surely would have happened anyway, but I could hardly tell her that after everything I’d let her do.

  “You’re right. I can see some difference.”

  “Okay, come on. Let’s do it.”

  She started to get dressed, but suddenly liking her like this, I stopped her.

  “Leave your top off. It will be easier.”

  She didn’t seem too wild about this idea.

  “If you look at me while I’m doing it?”

  “Yeah. It will go faster”

  She squirmed for a second.

  “Okay.”

  She ran into the bathroom for the lotion as I dropped my shorts. She was back in a few seconds and dropped right to her knees in front of me. I looked down at her naked chest as she stroked me, imagining that I was cupping those pointy little tits as she jerked me. Having her half naked in front of me was too much, and I was on the brink in about thirty seconds. Kim had done this enough to recognize the signs, and she dropped down to take the head in her mouth. But in doing so, she moved her hand off the head, leaving me with little stimulation, and my incipient cum fizzled.