My Sister and I

Ever since I could remember my sister and I have always been very close. In fact up until the age of 12 we took baths together. She is just one year older than me, and this story happened just last week. I had gotten home early from soccer practice at 5:30 and neither my mom or my sister had returned from work. I noticed that I had a little free time so I went straight to the computer and started to look at some porno I had downloaded.   After about 10 minutes I had a bulging hard on, and with that I took out my 7 inch cock and began to have a wank. I was sitting at my computer desk going to town, when all of a sudden I heard a footstep outside my door, (no one was home so I didn't shut the door) and saw my 17-year-old sister staring at me with my cock in my hand. My sister is about 5'6 with an athletic body. Nice muscular tan legs, with a nice ass, and round little titties. She just starred at me blankly as I tried to cover myself up, while she said "Oh my god!" I thought I was busted.  She was the type that would use this incident against me. Blackmailing me into being her maid for a while. I couldn't think of anything to say so I just begged her not to tell mom. She said fine after a while and agreed. But then she came closer towards me and asked me to stand up. I didn't have any clothes on, and was stark naked with a huge boner, so I was reluctant.   She said it was okay, so I slowly rose from my seat and my sister's eyes went straight to my 7" prick. "Wow" she said. "You have a pretty big cock! It's really thick." Now after that was said, I felt pretty good about myself.   Its always nice to have a girl say your dick is huge. My sister just stood there, her eyes glued on my cock. And then she asked me "Can I touch it?"   This question totally blew me away and without hesitation I said "Yea, go ahead." She slowly walked into my room, as I sat down on my bed, and her hand slowly went and grasped my cock.  I let out a small gasp and my sister giggled.   She began to stroke my cock lightly as I moaned a little. "Do you mind if I finish you off?" she said as my eyes widened with delight. "Of course not" I replied with glee.   And with that she began to stroke my cock furiously. I was in heaven! My sister was jacking me off! And she was doing an awesome job! I began to just sink in to the whole thing as I laid back on my bed and began to relax. I was just about in the middle of it, when my sister took her other hand and began to fondle my balls. This almost sent me over the edge but I still wanted to ask her one more thing. So after about 10 minutes I worked up the courage and finally asked her. "Will you give me a blowjob?"   Her hand stopped moving up my cock and she stopped to look at me. "You want me to suck your cock?" she said with a bit of a strange face. "Yes...please will you do it...I'll do anything!" To my surprise and delight, she agreed! But only if I cleaned her room and brought her food when she wanted it. I immediately said "Yes Deal!!"   and she smiled at me and began to give me the best blowjob I have ever experienced. Her head went slowly towards my bulging cock, as she lifted up my prick and slowly stuck out her tongue to lick my balls. Her wet tongue snaked slowly around and made small circles on them. Then she pressed her tongue hard into my balls and licked from there, straight up my shaft and onto my prick head. She lapped up some of the pre-cum and then opened her mouth and took half my cock into her hot mouth.  Her head started to bob up and down going a little deeper each time, as I just sat there in bliss. I could feel her starting to deep throat me, and I just couldn't believe my sister was such a good cocksucker.   I began to slowly fuck her mouth as my hands grabbed hold of her head and her hair. I then started to pick up the pace. Her hot mouth was driving me mad, and the slurping noises coming from her throat was insane. I was on the verge of coming when she slid my wet prick out of her mouth and said "Tell me when your gonna cum, because I'll swallow it all." I couldn't believe what I had just heard, so I just nodded and shoved my big dick back into her saliva covered mouth.   I started to fuck her mouth even harder, each thrust almost touching her tonsils. I was going to cum so I said: "Oh man, sis....I-I-I-Can't hold it much longer...ooh...here I come...Oh man I'm cumming!!" And with that she deep throated my cock one last time and my prick erupted with cum. Spurt after spurt came out, while my hot sister tried to swallow it all. I must have squirted about 12 strands of thick cum, because there was so much it was running down my sisters chin. After she was done, she licked all of the cum off her face and walked out of my room. As she left she smiled and said that she should get her friends involved next time. Man I can't wait until next time...