Behind The Shed

Marie seemed to perk up as well around me. We weren't just eyeing each others' bodies either, it was a warm and friendly type of demeanor. It was like the three of us were really good friends now. And we owed it all to something as silly as masturbating together.

Bree's leg healed up nicely, but she didn't go running with Marie for a few days. The day after she hurt herself, Marie didn't do her usual morning run because she had to do some errands with Mom. Bree had gone off to the lake with her friends, and of course Dad was at work, so I had the house to myself. I ended up sitting on my bed with my laptop, surfing porn and jerking off a nice big load into my stomach. I thought about Bree and Marie the entire time, though.

That night, no one came into my room and I didn't venture theirs either. It was kind of strange but it felt like there was this lull to our excitement of watching each other masturbate. I fell asleep before I could make sense of it. The next morning I slept in, and to my pleasant surprise I was awoken by Bree pouncing on top of me.

"Hey!" I said, pushing her off of me playfully.

"Wake up, lazy," Bree said, a very chipper tone to her voice this morning. "Everyone else is gone."

For some reason that clued me in to what she could possibly be wanting from me. Sure enough, when I finally rolled over and saw her, she was completely naked. That got my morning wood sprouting quite nicely. She just sat on the end of my bed, absolutely no shame or embarrassment at being naked with me.

"Where's Marie?" I asked, blatantly staring at her tits.

She shook them for my benefit and smiled. "She had to go do something for Mom cuz she was running late to work. She'll be back in a couple of hours."

I yawned and stretched, making my erection stand prominently underneath the covers. Bree pulled them aside, and when my penis came into view she licked her lips.

"You wanna go a round just the two of us?" I asked, knowing what the answer would be.

She nodded. "Yeah, I am really fucking horny."

This was old hat by now, so it was totally no big deal to be reaching for my cock to stroke it while Bree spread her legs and starting rubbing her pussy. Our legs were touching, which was even more exciting for me. I really liked this view because I could see everything about her. I could see that she was already very wet, and I could even see her cute little butthole every once in a while as she starting humping into her hand.

"What did you think about Marie touching her ass?" I asked, referring to our previous session in the basement.

Bree was huffing already, but spoke as if this was a casual thing to be talking and masturbating with her brother.

"It was pretty hot," she admitted, and then looked up at me instead of at my dick for a moment. "You want me to touch my ass for you?"

I could only nod, and my strokes got faster after hearing her say that. I watched as she opened her thighs even wider and gently separated her butt cheeks with each hand, first letting me see both her holes clearly. Then she licked her fingertip and touched it softly against her anal opening. She groaned quietly, and I wasn't sure if she was putting on a show for me or she was actually enjoying it.

"You like that?" she cooed, her voice raspy and sensual. "You want to cum on my little butthole?"

Oh my god, she was being so slutty I was going to lose it already. "Oh yeah!"

She scooted closer, raising her legs over mine and resting her calves on my hips. She positioned her cunt only inches from my cock, and if I really tried I could have probably touched the tip against her clit. But I wasn't sure she was ready for that. She was only trying to make it so I could aim and explode across her sexy body.

"Just keep stroking," she said, her eyes glued to my dick. "When you're ready, let it go all over me."

I stroked even faster, eager to watch my cum paint her cunt and her belly. But she had invited my to cum on her asshole, and in this position that seemed almost impossible.

"Can I...cum on your...I mean, your butthole...I can't..." I wasn't sure how to word it.

She nodded. "You're right, we want your cum on my ass, right? Ok, well see if you can get the tip right up against my hole when you cum."

That nearly sent me over the edge, but I held off by sheer desire to actually touch my cock against her sweet little asshole.

"So...I'm cumming...in your ass or on it?" I asked, genuinely confused in this state of arousal.

Bree's face lit up, and she got that devilish smile. "Ooh, you wanna cum in there? I'll let you. You can put the tip inside and let it squirt up in my ass. Oh god, that would be so hot!"

I spat on my fingers and rubbed it on the tip of my cock. I got it nice and wet, knowing I wouldn't need to stroke it very much longer before I blew. I leaned forward just a bit, and Bree lifted her ass off the bed just enough to get my pillow under her hips. She pulled her legs back and spread her ass for me nice and wide. It was obscene the way she was displaying herself for me, her own brother. And her tight little sphincter looked so delicious, I couldn't wait to do what she was asking of me.

"Do it, Kevin," she begged, looking up at me with pleading eyes.

"I don't even think I need to jerk off," I admitted. "I'll probably cum as soon as I get it in there."

She was excited by that thought, I could tell. She started playing with her clit again, and it only made the obscene display even more arousing. I aimed my cock down at her tight little hole, which would be stretching impossibly to fit my thick cock in mere seconds. I gently touched the tip against her hole, and she purred.

"This is so naughty," Bree said, raggedly. "Don't tell Marie we did this. It'll be our secret."

I smiled. That would actually be kind of fun. And maybe Marie and I would have our own secrets that Bree didn't know about.

I pushed softly, and her anus fought me for a moment. It didn't want to let my invading meat enter her tight passage. I was just going to put the tip in, it wasn't like I was going to actually fuck her ass or anything. I got more saliva on my dick, and my precum was also helping lube her up. This time when I pushed, her ass gave a little and I slipped in about an inch.

I just stared down at my cock head almost completely disappearing into my little sister's ass. Bree was going wild on her clit, making her ass clench. She pushed me right back out of her ass, but I was quick to get back inside. I slipped in about two inches this time. She groaned.

"Is that ok?" I asked, concerned that maybe I had hurt her.

She nodded. "Yeah, keep going. It feels really sexy. Oh god, Kevin, I think I like it in the butt..."

That did it, and I couldn't help but weakly thrust my hips forward as I came hard in Bree's butt. I slid in another inch and was not quite halfway inside of her when I exploded. I felt the sharp bursts of semen squirt into her butt, and I was lost in the pleasure of her tight ring clenching onto me as I came. I moaned as I emptied myself into Bree, and soon she joined me in climax. She cried out and her hand was a blur on her clit. We shared a wonderful orgasm together, for the first time actually joining our bodies. It felt so good, I wasn't sure I would be able to keep from repeating this in the near future.

I was still inside of her when it was over, and we were both panting. Bree was absently playing with herself still, and I really didn't want to leave her tight warm ass. We looked at each other finally, and I could tell Bree was still aroused.

"You want to...?" she asked.

I just nodded, knowing exactly what she was asking.

I pushed my cock further into her, and felt her ass split apart around me. Her hole was nice and slimy now, painted with my copious load of sperm. She gasped as I stretched her tiny little hole with my thick shaft. When I was all the way in finally, I just stayed there and tensed my dick as hard as I could. It felt really good to be inside of her, and it was the first ass I had ever fucked. Bree moaned and continued masturbating.

"It's really nice," she said with her eyes closed. "I think I can cum again."

"Do it," I said. "Want me to hold it here, or fuck you?"

She glanced at me only long enough to say, "Fuck me." Then she closed her eyes again and focused on her pussy.

I moved in and out of her slowly, gently even. Her ass was so tight I was afraid it might hurt her. I pulled my dick out of her ass just long enough to take in the sight of her abused little butthole leaking some of my cum, and then I pressed back into her. It felt so good, so right, to be fucking her, I almost forgot that this was my own sister and what we were doing was totally wrong.

She came, as promised, and a trickle of clear fluid seeped down from her cunt to my cock. She squirted! That really spurred me on, and I started fucking her harder. She looked up at me with a look of pure pleasure, a helpless and hungry look that told me she would take anything I could give her. I thrust into her ass like an animal whose only instinct was to fuck and claim what was mine.

I loved watching my dick disappear into her hole, and the way her pussy was clenching every time I slid back into her bowels. The forbidden nature of this act, aside from the incest, was really getting to me. I had cum only minutes earlier, but I was ready to go again.

"Inside?" I asked, barely able to get the words out through my pleasure.

She was huffing right along with me. "Yeah," she managed to say.

Finally, with an intense growl and a sharp thrust into her butt, I came hard again. My dick was so sensitive that it almost hurt when torrents of cum escaped my penis and filled her insides for the second time. I kept thrusting into her, pounding her ass and making it submit to me. Bree was whimpering now, maybe a bit from pain but ultimately she was simply submitting her body to me, letting me do whatever I wanted and getting off on the results.

When I finished firing off into her, I fell backward and slipped out of her ass. When I glanced down at her, still holding her legs spread apart in that position, her asshole was gaping wonderfully. My cum hadn't escaped her yet, she was holding it all inside of her like that.

"Oh, Kevin," she breathed. "I can't believe we did that."

Shit, was she regretting it?

"It was really nice," I said, and prepared to try to calm her and assure her everything would be ok between us.

"That was way better than masturbating," Bree said before I could. "Will you keep doing that to me?"

I could only smile and nod.

Chapter 8

That night, since I was very satisfied already from the anal extravaganza that Bree and I had enjoyed, I didn't bother to try to sneak into her room to play. I figured I would give her a break, and truthfully I wasn't sure I could perform.

But there was a soft tap on my door after everyone had gone to bed. The door opened and closed quickly, and I could only see the outline of a person approaching in the dark. When it got closer, I could barely make out Marie in her camisole and pajama pants.

"Marie?" I sat up in bed, squinting until my eyes adjusted.

"Hey," she said, and tiptoed right up to my bed. "Are you sleeping?"

"Obviously not," I answered. I was naked under the covers, but I wasn't exactly worried about her seeing me like this. "What's up?"

"Well..." She came and sat on the end of my bed, and I had a flashback of Bree sitting right there this morning. "It's just been a few days is all, and..."

I couldn't help but smile to myself, and to my surprise I started to get an erection.

"Yeah, I know," I replied. "You haven't gotten off by yourself?"

She shook her head. "I've been...saving it up, kinda."

"Why?"

She shrugged. "I dunno, I don't really enjoy it by myself as much as with you and Bree."

I didn't bother to ask why she didn't go to Bree first. I knew she liked cock better than pussy, after all. I pulled aside the covers to expose myself to her, and she smiled when my dick came into view.

"I already played with her earlier today," I said, holding back the details. "So I'm kinda spent, but I can try to keep up."

Marie pulled her shirt up over her head and tossed it aside. She stood up on my bed and pulled her pants down, and when they got past her knees she started to get wobbly on the mattress and fell forward. She landed right on me, her hands bracing her against my chest but her stomach landing right on my boner. It didn't hurt, but the sudden connection was a bit awkward.

"Sorry," she said, fumbling to get off of me so she could finish undressing.

"Admit it, you enjoyed that," I joked.

She seemed to wink at me, or at least that's what it looked like in the dark. "Maybe."

"Hey, remember how you said you liked it in the butt?" I asked boldly. I honestly wasn't sure where I was going with this, but it seemed logical to try to proceed that way with her like I had with Bree.

"Yeah, so?"

"Do you wanna do some butt stuff with me?"

There was a short silence as she considered what I might be asking of her. Maybe she wondered if I meant for her to touch herself, or rather for us to touch each other. By the slim chance that she would actually agree to the latter, I didn't say anything else.

"What did you have in mind?" she finally asked.

"I dunno. But if it's something you like, we should do it."

"Kevin..." She raised up onto her knees, and I could make out her small tits quite clearly. "You know we can't...have sex, right?"

I shrugged. "Hey, that wasn't what I was suggesting."

"I mean," she corrected herself, "we can't do anything that involves you cumming inside of me. Inside my pussy, that is."

I tried to hide my excitement as her words revealed to me that she may be up for something more than just touching ourselves. But I played it cool.

"I don't intend to do that," I assured her. "But...Bree and I...we've kinda taken it a bit farther already."

I hadn't meant to share that much with Marie, but it seemed like it would be in my favor to get a bit of a rivalry going between my two sisters. I knew Marie was competitive like that, always trying to best her little sister in anything they both tried.

Marie leaned forward a bit, and I felt her inner thighs on the top of my leg. She practically hovered over me, getting closer in some sort of sensual gesture like she was having a hard time keeping herself from pouncing on me. That had to be a good sign.

"What did you two do, exactly?" she asked, and her voice was already raspy.

I grabbed my dick and started stroking. "She let me put the tip in her ass and I came there. Twice, actually."

Suddenly I felt Marie's fingers on the hand that was stroking my cock. She moved them further down and pushed my own fingers out of the way so she could grab my erection and gently touch it. I groaned as I felt her feminine grasp on my penis.

"You two are fucking perverse," she said, in a sexual whisper that dripped with desire. "I can't let you two get away with that, without getting a piece myself."

My dick lurched in her hand. "You really want me to put it in your ass too?"

Her face was right in front of mine, and she was jerking my cock right up against her cunt. I could feel the tip brush against her slick bare vagina as she pulled on it.

She whispered in my ear, "I love getting fucked in the ass."

I could not have wanted her any more than I did at that moment. I thought she was going to kiss me, the way her cheek dragged along mine as she moved back to a sitting position. To my surprise, Marie crouched down and lowered her face to my crotch. I was in heaven as I felt the warmth of her breath and the lovely wetness of her mouth on my penis. Her tongue snaked out and licked at it first before she sucked the shaft down into her throat. In only a few movements, she had buried me in her face. Her nose touched my stomach just below my belly button.

I groaned heavily, and for the next few minutes I was amazed at how good a person could feel. It wasn't just the pleasure of her mouth and tongue working against my cock, licking and sucking at it and coating it with saliva. It was the reality that this was my older sister doing this to me, and wanting to do it more than any girl has ever wanted to before.

"Do you like that I'm sucking your cock," she said, "after it's been in Bree's ass?"

My god, I hadn't even thought of that! She was right, she was sucking the same penis that had invaded Bree's naughty little anus and filled it to the brim with hot cum. I grunted as she throated me again, and I felt her fingers graze under my balls to stroke me there in that wonderful place.

"Now you want my ass, right?" she asked, though she didn't need to.

She sat up and hovered herself over me, not letting me move even an inch. She positioned her hips over mine, and aimed my dick straight up. I watched, and felt, as Marie sank her ass onto my cock, letting it slide up into her tight butthole and go deep into her bowels. She moaned as she did this, rubbing her pussy as well but focusing on getting me inside of her ass.

"Oh, Marie..." I couldn't even say anything as she did this, it felt so good. I was now fucking the second ass I had ever fucked, and in the same day that I had my first.

After I was deep inside of her, and I could feel her body resting on mine, Marie started to masturbate. She rubbed her clit softly at first, gently grinding her hips on me and letting her ass undulate on my cock. She sped up her movements until she was panting and rubbing her cunt hard, pawing at it hungrily. This was the best sex I had ever had, and fortunately I wasn't about to cum too soon. I could thoroughly enjoy it for as long as I could endure.

She cried out as she climaxed on me, and her ass clenching on me as her pussy convulsed made me almost lose it. Just like Bree, to my delight, Marie squirted a small stream of clear liquid onto my stomach. God, that was so sexy, feeling the warmth of it spread across my belly. My bed would be a mess, but I couldn't care less right now.

"God, Kevin!" she exclaimed. "I can't stop cumming!"

I grabbed her hips and held her down onto me. She mashed her ass onto my cock, as if she was trying to stuff more and more of it inside herself. I felt like I was reaching up into her gut with my cock. The inside of her ass was rubbing me so wonderfully, just slightly different than a pussy would. It reminded me how naughty and forbidden this was, and how good it was going to feel to let my cum paint her insides. I remembered how Bree's ass had looked after I plowed it, all stretched out and gaping. Seeing my cum run out of her abused little hole was the hottest thing I had ever seen, and picturing Marie's ass doing the same finally sent me over the edge.

I threw my head back and let out a loud groan as I spewed up into Marie's butt. She smiled as she felt me tense up and lurch inside of her, and I came with enough force that she probably felt it squirting around in her bowels. She clenched her ass as hard as she could around my dick, and just held onto me as I enjoyed her body.

I collapsed back onto my bed, and Marie stayed on top of me. She wasn't going to let my dick escape her tight ass. She gently stroked my chest as I caught my breath. I pawed at her tits in return. It felt like we had crossed a barrier that even Bree and I hadn't crossed yet.

"How was it?" Marie asked finally.

"It was the best thing I've ever experienced," I answered truthfully.

She giggled. "Better than Bree's ass?"

"More intense," I said. "We didn't really get this much into it when we did it. It was more...innocent."

Marie slowly lifted off of me, looking down at where we were joined. We both watched as her asshole dragged up my shaft and finally my cock head popped out of her. Cum followed, trailing all over my dick in a filthy display of what we had just done.