Michael Smith - Siblings

It was a big shower stall, completely tiled in white; it had been installed by the previous owner for reasons we didn't know. It was almost the size of an elevator car and could probably hold six or eight adults if they knew each other real well. (Who knew? Maybe it had.) But it was certainly large enough for two people and for most activities they might invent, as we had long since discovered. The shower head was set high up on one wall and was the kind that provided a variety of pulsations and fineness of spray. That could be fun, too.

Alex backed up to me and flipped her wet hair back over her head. She always did that, but I knew enough to close my eyes in time so I no longer got whipped across the eyeballs.

"Do me?" This was the comfortable routine we had settled into. I soaped her back (and often her front) and then she soaped mine (and ditto). Often, that was all that occurred – just a companionable shower together. Since we were nearly always available to each other, the sexual pressure had become controllable. But it was always there, waiting, when we wanted it to emerge.

I squirted the bottle of her favorite decadent bath soap across the top of her shoulder blades and began rubbing my hands briskly over her smooth, muscular back. Up over her shoulders, a pause to massage her neck muscles (she purred when I did that), up and down her sides as she raised her arms. I liked the feel of her rib cage under my soapy fingers. Up under the angle of her shaved armpits, back down her arms, which she now held out behind her. She stretched and arched her back a little and sighed with pleasure. This was often almost as good as sex to her.

Another squirt of soap across her lower back, then my hands were spread out over her ass, squeezing a little (she expected it), then moving around the sides of her hips to run my fingers over her pelvic bones. Then she turned around and I saw the glow in her eyes that meant she didn't want this to be a quick shower, just to get clean.

More soap across her collarbone while she stood with her head tilted back, neck arched, breasts out-thrust. Her nipples were erect. My hands moved across her shoulders again. Her eyes were shut against the soap but she smiled as I took her by the throat and slid my hand up and down beneath her chin. An old joke: I had once pretended to strangle her in the shower while doing sound effects from PSYCHO. I ran my hands across her flat, tight diaphragm and stomach and then down her sides again to her hips. My cock was half-erect as I pulled her closer to me.

She clasped her hands behind my neck and we kissed quietly for a few seconds before she disengaged.

"Not yet," she whispered.

Now it was my turn. She turned me around and rubbed soap across my shoulders and my back, down my sides, and across my ass – which she also squeezed (because I also expected it). Then she did something different. Running her finger slowly down the crack between my cheeks, which by itself made me shiver, she pressed her middle finger against my anus.

It startled me for a moment but my cock instantly sprang to full attention. Her nails were forever breaking off and at the moment that particular fingernail was trimmed back short. She pressed her body against my back and pushed her finger about one joint deep into my ass, and wiggled it back and forth. The sensation was incredibly sexy. I knew I had no homosexual urges, but I wondered if this was what it felt like to be fucked.

"Like it?" she whispered over my shoulder.

"Umm-hmmm! When you do it," I qualified.

"You know those magazines? The ass-fucking? I want to try that!" She wiggled her finger again and then eased it out.

"Are you sure?" I wasn't sure I wanted to do this, not to my sister. I certainly didn't want to hurt her and anal sex looked like it could be pretty painful, especially the first time. I told her that in a hesitant tone.

"If it hurts too much, we'll stop. Besides, I know you wouldn't hurt me on purpose." One of her hands had wrapped itself around my cock and was squeezing a little and stroking a little. Her other hand clutched her own crotch and I could see one finger busily stroking her clit. She was determined to push us both into this.

"C'mon, please? Haven't you wondered what it would feel like to fuck a girl up the ass? Especially me? Don't you want to fuck your sister in the ass?" Well, she was right about that. And when such blunt language came out of that sweet little face it usually had the effect she desired. I turned her around to face the wall that had a porcelain rod in it and lifted her hands toward it.

Alex bent forward, breathing a little heavily in anticipation, and gripped the rod with both hands. I knew my sister. She had really gotten herself worked up thinking about this. She bent her back even more as she spread her feet a little apart on the slick tile and cocked her ass upward.

"Put it… in! I want to feel it going up my ass – I really do! I can imagine it, but I want to*feel* it! Please – put it in!" Her head was swinging from side to side and her wet, cascading hair swished.

I reached up to the shelf above the shower head and grabbed a jar of skin- moisturizer. I had used it occasionally to masturbate with, for extra lubrication. Scooping out a handful of the cream, I slathered it up and down my cock, which twitched in anticipation. Then I pushed my slippery middle finger up into her rectum as far as I could reach – three inches or more. It was snug, tight, but I could fit. Alex gasped once and sucked in through her teeth. Her ass trembled and her sphincter tightened around my finger, trying to pull it out of joint. My god, what was this going to be like?!

I slid my finger out and maneuvered the head of my cock into position, pressing against her puckered anus. Slowly, carefully, I began pushing into her. She gasped louder and her knuckles on the wall rod tightened. I paused; I didn't want to hurt her, no matter how much we both wanted to do this.

"No- It's all right! Go on, go on!" She shivered in the steamy shower and I could feel the motion in my cock. I held her hips and pushed forward harder. My cock slid upward, inward without stopping. In another moment it was completely buried. My pubic hair seemed to sprout from between her cheeks and my balls were pressed against the space between her cunt and her asshole.

I moved my cock in and out a fraction of an inch, just to see if I could. So tight! It felt like I was being swallowed by a suction pump. Alex was breathing rapidly and moaning.

"Does it hurt?" I asked anxiously.

"A little – no – it feels so good – oh – shit – oh – it feels huge! Bigger than it ever did the other way! Oh, God- Fuck me, fuck me!"

As I began pulling it out halfway and pushing it back up into her, I felt myself come just a little. No, not yet! I wanted all of this first! But the small amount of cum just increased the lubrication in the depths of her ass and made it easier for me to pump back and forth.

Alex was gasping and breathing loudly in rhythm with my pumping, just as she did when my cock was ramming in and out of her cunt. Her pussy was always nice and tight, but her ass was fantastic! The inner surface of her was smooth and soft but those shit-pushing muscles were strong. When I pushed into her, she, without thinking about it, pushed back; when I pulled back for the next stroke, her muscles tried to grasp my cock even more tightly. It was the most erotic sensation I had ever felt.

I couldn't see them, but I knew her breasts were swaying tightly back and forth. I wanted badly to reach around and squeeze them, but if I gave up my pelvic clutch we'd land on the hard tile floor. I interrupted my pace, pulling out almost all the way and then cramming my cock back into her as hard as I could. My balls slapped against her ass. She gave a louder cry and arched her head backward.