First Time With My s****r SeXStoRY

When I was younger, I had a habit of masturbating quite often as most guys do. One day I was in my room with the door locked and I was on my bed with a magazine for inspiration. I was going at it when suddenly, my s****r burst in. I rolled over and covered up and yelled at her for doing that. I asked how she got in since the door was locked. She showed me the small flat head screwdriver she had used to open the cheap lock. She had loved to pick on me as she was 4 years older than me and when she was bored, I always seemed to be her source of amusement. "What are you doing?" she asked with an evil smile. She knew, I know she knew, but she wanted me to be embarrassed and tell her. "You saw me, ok...now get out." I said. It was the best I could do under the circumstances. She started to walk towards me while taunting me with, "why won't you tell me?" She bent down at the side of the bed to pick up the magazine I had dropped in a panic when she came in. "You're a dirty boy, aren't you? Looking at these naked bitches and touching yourself. I should tell on you, shouldn't I? You like these bitches?" "Just get out and leave me alone, ok? You've had your fun, go away." I said. She looked at me and reached for the blanket that was covering me. "Come on, what more do you want?" I asked. She just grinned then asked if I ever thought of her the way I thought of the "bitches" in the magazine. I couldn't answer her. The truth is that I had thought about her that way many times. She was skinny, small tits, but there was something about her that made her hot. I had jerked off thinking about her many, many times. She asked again and then one more time. I finally answered, "Maybe a few times." "Oh really? And what did you do? Did you touch yourself when you thought of me? Did you play with yourself, hmmm?" She was enjoying this. She liked to watch me squirm. "Fine, ok? Fine...I played with myself. I thought about you a few times and played with my dick, ok? Happy now?" "Actually, yes I am" she said, "quite happy as it turns out." At this point, I was wondering what was going on but my dick had taken on a life of its own and was starting to get hard again and surely the lump under the blanket was becoming visible. I wasn't sure whether she was being mean to me or if this was going somewhere. She slowly leaned forward and whispered to me, "If you had the chance, would you really do anything with me?" I was stunned and didn't know what to say. I couldn't figure out if she was just trying to torture me or what. I just laid there and didn't answer her. After a few seconds, she leaned closer and said in a sexy whisper, "Would you like to see me?" Again I was unsure. She stood up and slowly lifted her top. She stopped just short of exposing her nipples. No bra, small tits, but they seemed so firm and round. She looked at me then pulled the shirt over her head and dropped it on the floor. She had such pink and pointy nipples...I could only stare at them. "Do you like what you see? Is it everything you had thought of? I know they aren't as big as the ones on the bitches you were looking at but what do you think?" She was running her hands over them. "I, uh....Yeah, I like them...a lot" "Really? Would you like to touch them? You can touch them if you will show me your cock." She smiled. I thought about it. At this point, I figured why not...I was already looking at her tits, could this be some sort of evil plan? Probably not. I said ok and she reached for the blanket and slowly pulled it back. I was fully hard after all this and she exposed my dick standing right up. She smiled and told me she liked it and it was everything she had thought about too. "What? " I asked. "You have thought about me too?" "Sure I have. Do you mind if I touch it?" She was staring at it. I told her she could but she owed me touching her tits as she had promised I could if I showed her my dick. She said she hadn't forgotten that and moved closer. She took my hand and put it on her tit and told me to "Have fun with it" as she reached for my dick. I started slowly rubbing it and then running my finger over her nipple which was quite hard. She put her hand on my dick and rubbed me slowly. "Mmmmm....squeeze my tit...squeeze it a little" she told me as she gripped my cock. "I want to jerk you off...can I? Can I jerk you off and make you cum?" "At this point, you can do anything you want to me" I told her. I was so intent on playing with her breasts and how good her hand felt on me, I would have let her do anything. She started rubbing me and pulling on me slowly as I squeezed her tit like she asked. Her breathing was getting a little heavier. She told me she loved having my cock in her hand while I was playing with her tit and I was turning her on. I told her she was going to make me cum. "Yes, I want that, I want you to cum" she said as she leaned forward and kissed the head of my dick. I was doing everything I could to hold back but then she started pumping faster and harder...suddenly she stopped and let go. She got on the bed on her back and told me to straddle her. I did so and my dick was pointing at her tits. She reached up and grabbed me and started working on me again. "Play with both my tits" she said. I placed my hands on them and started kneading them. I squeezed her nipples and then she said, "Harder, squeeze them harder". She was working my cock furiously and now I was beyond the point of any control. I was squeezing the shit out of her tits and fucking her hand like it was the last thing I was ever going to do. "Kathy....Kathy...I'm going to cum....you're going to make me cum." "Do it...fucking cum all over my tits....shoot your fucking load on your s****r!" I couldn't take it...I exploded and shot streams of cum on her chest, my hands, and even hit her face. "Oh yes, fuck yes" she said as she played with my cock and squeezed the last bit of cum from me. She then let go and put her hands on her chest and rubbed my cum all over. When she was done with that, she wiped it from her face and licked it off her fingers. I got off her and laid down. She turned around and laid next to me. We talked a little bit and then she told me that she wanted to do more if I was willing. My parents were at work right now but would be home shortly but since it was Friday, they were supposed to be going on their weekend getaway. We were old enough to be left alone so of course, there was opportunity. She told me that if I liked what we just did, her ideas for later were even better. She told me she is quite a whore...she loves fucking and the kinkier, the better. She said the fact she's my s****r makes it even hotter. Did I want to spend tonight with her? Of course I did....