My Unbelievable Sister

Note : This story is completely fictional!

 My sister is called Jess and is an unbelievably hot blonde 18 years old. Anyway as she approached her 18th birthday she decided to have her friends round our house as a get together. Now I will admit that when she is with her friends she can act as a bit of a slut but i never really noticed it and would always just go to my room and play on my computer or watch TV while these events went on.
This night was different. I had been upstairs for quite a while and had heard lots of laughing, shouting and music and I was dying for a drink so I began to make my way downstairs. When I got to the bottom of the stairs I saw something I didn't expect. All 5 of her friends were there in just their bras and tights and my sister and even my mom were dressed the same all laughing together and clearly very drunk from the state of the empty bottles.

They all looked at me as I hit the bottom of the stairs and it was as if I was Brad Pitt. They all rushed to me and started hugging me and kissing my cheeks. I wasn't ready for this and I began to feel my worst nightmare, my dick began to grow in my pants. I tried to wrestle away from them to get to the fridge and have my drink but their were 6 of them including my sister. Just then things got worse my mom told everyone that it was a good time to have a photo and so everyone lined up with arms round each other, I was next to the hottest girl with huge tits and she was only in her bra and I couldn't help staring, it was then that my sister shouted 'LOOK chris has got a boner!', my heart sank as they all looked and began laughing at the fact I had a boner but it was human nature and I am only 15 so I don't have any experience except from things on my computer. Anyway my mom was adamant to take the photo and so my sister lent over and put her hand over my throbbing cock, they were all cackaling with laughter and my sister looked at me with a sort of quizzed, confused face and then I walked off back upstairs. The laughter continued for hours after and I got into bed. I looked downstairs and they had all cuddled up to watch a film. I saw my sister coming this way and so ran up back into my room. Minutes later she waled in.

'Hey there Chris' she said 'how are you?'
'Fine' I said 'although a little embarrassed about earlier'
'You shouldn't be' said Jess.
'Why is that, everyone saw my boner'
'Well from what I felt it is bigger than all the ones I have seen, thats actually why I came up here I just wanted to take a quick look at it to see if it is real.'
I was shocked to say the least I didn't know what to do or say, 'It is wrong though your my sister'. 'Chris, I only want to see it I don't want you to fuk me with it.'

I thought about it and I began to lower my trousers, 'this isn't a dare is it'. She was quiet, her mouth just gaped open and her eyes almost popped out of her sockets. Between you and me I didn't think it was that big. She leant over and I moved away, 'What are you doing?' I said. 'I just want to touch it' I let her and the cold touch of my own sisters hand on my cock began to make me go very hard very quickly. 'Sorry' I shouted out , 'don't be she said and her hand began to squeeze. She started to pump at my cock and it was such a good feeling i didn't stop her. I asked her if i could see her tits and she accepted. They were amazing the perfect size and shape and they flopped out of her bra. 'I know what' she said and she took her tits and wrapped them round my cock. I almost exploded with joy. She lifted her tits up and down and gave out a soft moan. then she leant over and wrapped her warm lips over my rod, she sucked so good and teased my bell end with her tongue. She went further and further down my bell end and began to gag, the sight and sound of her gagging made me convulse and tense up, I came all over her face and in her mouth. In that second she leapt up onto me and kissed me, her lips surrounded mine and my own cum swapped between our mouths, she gulped it down and lay down on the bed.

I was so horny and ripped her tights open and grabbed her thong and pulled it down, I shoved my face deep into my sisters pussy and began to lick, it was already wet and I licked it clean. I ventured south and licked her asshole and she began to moan out in pleasure. 'YEESSSSSSSS' "LICK MY DIRTY HOLE' I did as she commanded and licked it slowly sticking my tongue inside and she wriggled with pleasure. My dick was hard again and i leant forward kissed her and shoved my dick up her virgin asshole. It felt so good and was so tight, she screamed and screamed i thought the house was going to collapse and then I came up her hole, it dribbled out and i licked it up before passing it into her mouth to gulp again, we lay naked next to each other and embraced in a passionate kiss. And then the door opened, it was her big titted friend and she looked more shocked than my sister I can tell you that. She ripped her bra off and ran toward me.

Her tits bounced around and hit me in the face I pushed my mouth into the tits. She carried on and went down on my cock using her tits like my sister did to wank me off and at the same time fingered my sister. Not long later I announced I was ready to cum. They got on their knees beneath me and it was the best sight of my life. my hot sister and her hotter friend waiting for my warm cum looking deep into my eyes. I came and they battled over who would have it, they kissed with their tongues swapping who had the cum and they both swallowed satisfied with what they had received.