I guess this story starts way back when I was 13 years old.  My buddy had a neighbor across the street with two sisters, and we would play games with them growing up.  Just kid stuff, like wiffle ball and hide and go seek.  One time they had a friend over, Christie, and I was instantly infatuated with her.  She was so pretty, and fun to hang out with.  She was a year or so older than me, and went to a different school.  But I started hanging out with my buddy as often as I could just to get a glimpse of Christy.

Flash foward three years, and, long story short, it turns out Christy was my sisters' biological sister, due to adoption.  When we found out, it was kinda crazy, but even though I thought she was one of the sexiest girls I'd ever seen, now she was my step-sister.  Her mother, was a serious lunatic, and my parents let her move in with us.  So now here's this girl I lusted over, living in my house, as my Sister!  We did brother and sister stuff, like building snomen, watching movies, and playing board games.  She was so amazingly beautiful, I could hardly stand it!

Sometimes we would be playing cards together, and she would be wearing one of those over sized T-shirts, with just her little white panties underneath.  She would sit on the floor across from me sitting in the Indian position, flashing her crotch at me.  Back then, pubic hair was normal, and I could see little hairs poking out of her panties.  When she would reach over for the bowl of popcorn I had between us, I could see right down her shirt at her perfect titties!  She was teasing me so much, I would be playing Gin Rummy with a raging hard-on.  I usually had to put a pillow on my lap to hide it.  But she was my sister, and she treated me like her brother.  I was driving me nuts!

Early one evening, I was walking down the hallway when I heard Christy in the bathroom.  She had just turned off the shower, and I had to use the bathroom.  When she opened the door, she was stark naked!  She just stood there, not trying to hide herself, and said,"Oh, excuse me, Bro.  I didn't know you were there"  She smiled a little smile, and brushed past me going to her room.  I turned around and checked out her perfect ass walking away from me.  She looked like the girls I see in the porn magazines.  Just absolutly perfect.  Tight, muscular body, perky titties, well groomed pussy, a little hairy, but no bush.  She had a nice tan, with sexy tan lines from her bikini.  That was it, I rushed back to my room to jerk off!

I found the mag I had with a girl that looked just like my sister, grabbed my dick and started jerking.  I closed my eyes and thought about Christy.  Her perfect naked body glistening from the shower, just inches from me.  I could still smell her.  So fresh and fragrant.  Like pussy potpouri.  I was getting really close to cumming when I opened my eyes, and SHE was there!  Oh shit!  I covered my hard dick,  but really what was the use?  She saw me jerking off with a picture of a girl that looked just like her! 

Christy said, "It's okay, Bro, don't stop, I want to watch"  I was horrified.  She was wearing her bathrobe, and her silly fuzzy slippers.  I don't know where I got the courage to say it, but I asked my sister, "So what do you have under that robe?  She untied the belt and  as she showed me, she said, "Nothing at all"!  "You've already seen me naked, and now I've seen you, so what's the big deal?""So why don't you keep playing with yourself while I watch"

I didn't know what else to do, so I started jerking my dick again, staring at my step-sisters' naked body.  I asked her if she wanted to touch herself, and she started rubbing her thighs, up to her pussy.  When she spread her pussy lips for me to see, I blew my wad all over my stomach and chest!  It was just too much for me to take! 

She sat on the bed next to me, rubbing her fuzzy little pussy, faster now.  She reached over to me, and rubbed my cum-covered  stomach and chest.  She was massaging my cum into my skin while she fingered her pussy.  She didn't actually touch my dick, which was already getting hard again. (Bless youth) Her legs started quivering, and she let out a squeal, threw her head back and orgasmed, all on my bed!  Just then she got up off my bed, put her robe back on and said,"If you promise not to tell anyone, not a soul, maybe we can do this again",and left my room. 

Oh My, did that just really happen?  I was in shock, I was in awe, I still had a boner!

We masturbated together a few other times after that but we never touched each other, just ourselves.  When I asked her, she would always say,"I don't think we're ready for that, Bro"  One day after school, I went into my bedroom, and found her there, looking at one of my porn mags.  She asked me if the girls in there without pubic hair was a turn-on for me.  I said that I like it both ways, but I guess that licking down there might be nice if it was all shaved.  She sorta snuffed, and left.  A few hours later, after dinner, there she was agian, in my room.  This time she had her robe on and a smirk on her face.  "I think we might be ready now, Bro!  What do you think?"  She dropped her robe, and her pussy was perfectly shaved bald!  I started taking off my clothes when she stopped me and said,"Let's see if you were right about licking my shaved pussy."  She layed on my bed, and spread her legs.  I crawled onto the bed, kissing her feet, licking her calves, licking and sucking her thighs until I got to her bald folds.  I licked her pussy, which was already wet inside, rubbing her clit with my thumb.  She grabbed my hair and shoved my face deeper into her.  I used two fingers to spread her pussy lips, licking as deep as I could reach.  She was so sweet tasting.  I had only ever gone down on one other girl, but Christy was delicous!  Her puss was so wet, dripping down her crack, I licked it up, even touching her ass a little.  I slipped a finger inside her, and started rubbing in and out, in and out.  Her breathe quickened.  While I finger-fucked her, I started suckling on her clit.  She started bucking against my fingers and my face.  And then she...stopped!

"What's wrong, Sis", I asked.  "Absolutly nothing!  You're really good at that, but I want to try something else" she repied.  "What do you think of my shaved pussy?" she asked.  "I looove it!" 

She started taking off my shirt, and I took off my pants.  Of course my dick was rock hard already.  She told me she wanted to taste me too.  But at the same time!  She layed me on my back on my bed, and slid on top in the 69 position.  She grabbed my dick and spit on the head.  She started stroking me as I continued to lick and suck her pussy.  Now her ass was right in my face, so as I licked up and down on her pussy, I would lick all the way to her asshole.  She didn't seem to mind.  Just then, she swallowed my dick!  She was sucking and stroking me so hard I didn't think I was going to last.  I arranged my one arm so that I could finger her, all the while licking her pussy, clit and asshole.  Once again she rode my fingers (two in her now) and tongue.  I was fucking her face and she was taking me all the way down.  I pulled away from her soaking wet pussy only to say,"I'm going to cum, SiS"!  She squeezed my dick even harder, as I shot my load down her throat.  I was breathing so hard, I guess it stimulated her pussy and she said,"Me too,Bro"!

That was the first and last time we ever did that together.  We would still masturbate together once in awhile, but we were getting older now, and dating others.  After she graduated highschool and moved out, our fun times ended.  We really only see each other once or twice a year, now.  She's married with children, and I'm married, too.  That was 25 years ago, but sometimes I can still smell her coming out of that shower!