<!--[if !supportEmptyParas]-->I remarried about 5yrs ago, as is normal nowadays we both came with baggage, mine was 2 teenage children who live with their mother, my new wife had a daughter of 11. (We Will Call Mandy) <!--[endif]-->

<!--[if !supportEmptyParas]-->The first couple of years where to say the least tense, always being compared to daddy, every time I tried to tell Mandy off or punish her, she would always pull out the "your not my daddy card" <!--[endif]-->

Then 2 yrs ago Mandy's dad got remarried too, to cut a long story and get to the point, Mandy did not like her new step mum, and I gather her step mum made no secret of the fact that she did not like Mandy. We had a few months of grief and heartache and tears, but I played the part and was always there with her mum when she needed us.

On her 13th birthday we decided to treat her to a party, she chose the theme of a cocktail party, all the boys had to wear dinner suits and the girls wore cocktail dresses, we splashed out on 2 professional trick barman who could juggle bottles like in the film.

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The downside of our initial planning was that we chose a venue close to our home, but as we had moved recently a lot of her friends lived miles away near our old home, the solution was that we said she could have a sleep over as well. 10 girls to sleep upstairs and 7 boys to sleep downstairs, her mum and I relegated to the caravan on the front drive.

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finally we got everyone back to the house, spelt out the ground rules and went to bed, leaving the kids to have a midnight feast before bedtime.

My wife had drunk quite a bit and immediately fell off to sleep, I lay there listening to the baby monitors, I had unknown to Mandy hidden one in the lounge and one in our room upstairs, the conversation was as you would expect mainly silly and giggly, the girls discussing the boys and the boys mainly chatting about there favourite football teams.

I fell asleep for a while, but when I woke up I was shocked to listen to a boy giving out a dare to one of the girls to stand up and lift her nightie show her knickers and let one of the other boys give her a wedgie (For those who don’t know what that is, it is when your underwear is pulled upwards hard, so that the material disappears up your bum crack), she objected for a moment and then coz they were all getting on at her she agreed, I listened hard and assumed from the cheer from the crowd that she had fulfilled her dare, however the boys were complaining that she had dropped her nightie down to quickly, she was made to stand up and lift it again to show, Then I heard one boy say that he could see she had hair on pussy, and that he liked her cameltoe and laughed.

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His comment was questioned by several of the crowd who asked what he meant by cameltoe, he explained and they all laughed.

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At this point I realised they were playing a game of spin the bottle, and that they had been drinking, as their was no alcohol at the party, I assume my drinks cupboard must have been raided, I was slightly shocked at what I had heard, but actually quite turned on thinking and imagining the girls cameltoe. I lay there unsure what to do, the Adult and Father in me suggested I should burst in and put an end to the game and spilt them up, the pervert in me wanted to listen some more and find out how far they would go.

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Again the bottle was spun and it landed with a lad who was asked truth or dare, he was asked if he was still a virgin, he said he was not, so they asked who and he claimed a girl he met on holiday, I don’t think they believed him coz they all jeered at him,

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Once again the bottle was spun and a boy got chosen to be dared, I instantly recognised who it was by the voice, Graham was the oldest boy there at 15, he had a very deep voice where puberty had arrived, but He was also the lad I liked the least, always very sure of himself and was basically the ring leader for any trouble that happened.

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The girls all giggled and whispered and then one of them suggested Mandy should give the dare as it was her party, I held my breath because up to then I had not heard her voice, and was concerned as to what she might say, a little flustered at being put in the spotlight, with a slightly shaky voice, Mandy told Graham that the girls had decided he should stand up drop his shorts and show his cock, I was shocked that she could say such a thing, at 13, the youngest of all her friends, I had never heard her use language like that before. As expected he had no problem with this, he appeared to stand and just go for it, the girls all giggled and some whispered to each other, what they where saying I could not hear.

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He was obviously about to tuck himself away, when one of the girls told him he had to leave it out, and she seemed from the noise to pinch his shorts and the girls where throwing them around, he was completely unfazed, didn’t seem to care, much to the disappointment of the girls he sat down and suggested the game carry on.

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One of the boys suggested that it was not fair, so maybe the rules need to be changed, he suggested that they team up boys against girls, they all whispered and agreed, so come the bottle was spun again and the girls lost, the dare was that all the girls should strip off to music, again there was some whispering from the girls, it appeared that some were okay with it, but some were not, a bit of an argument started and then I realised that Mandy was one of the girls who was happy to do the strip, after a bit of moaning by the boys, especially Graham who stated as he was naked why did they have a problem with it, they all seemed to agree, some music was put on and it sounded by the cheers from the boys as if the girls were doing the dare.

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I couldn’t just lay there, so I put on a tracksuit quickly and quietly so as not to wake my wife, and sneaked through the garage and into the kitchen by the internal door, slowly opened the door so I could see into the through lounge, there in front of me was he boys sat on the ground watching the girls all prancing and dancing supposedly stripping, most of them had no clue how to strip, but Mandy’s best friend Sarah certainly knew what she was doing, very neatly teasing her clothes off and little by little showing a bit more each time, I have to admit that I was standing there with a hardon stretching the fabric of my joggers.

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When I looked at the boys they were all rubbing themselves with huge silly grins on their faces, all but Graham, he was openly giving himself a wank, he had no shame and to be fair I was surprised on what a large lad he was.

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From where I was standing I could only see half the girls and could not see Mandy, Sarah had completely stripped off and was a stunner to look at, long blond hair, blue eyes, a thin build with long smooth legs that met a heavenly looking pussy that was speckled with downy fair hair, and perfectly formed lips, a bust that was in the middle of development, two smooth perfectly round yet coned shaped breasts, each topped with engorged light brown large puffy nipples.

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Whilst I could have stared at Sarah for hours being greedy I still wanted to see more, I decided the only way I would get to see more without being detected was to climb onto the flat roof and look through the skylight, I sneaked back out and round the back of the house, fortunately when we built the extension I had the sense to put in a fire escape ladder from the flat roof to allow access from the bedrooms, quietly I climbed up and scampered across as quietly as possible until I could peer through the skylight.

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When I got there I which had taken a while, the girls where all sat back down in the circle and were covered with the scatter cushions from the sofas, but what a sight, 11 nubile young girls all topless and apart from the cushions all naked, and no surprise bottles of drink from my cupboard was laying around, I could no longer hear the conversation, but I gather the girls were getting there own back, because all the boys (except Graham who was still sitting with his hardon proudly on display) lined up and dropped there shorts, every one was as stiff as any boy could be, then Sarah stood with Mandy and preceded to measure each one with a school ruler they had found. I was shocked at the way Mandy held each cock so Sarah could measure each one. There in front of me was the step daughter I thought to be so innocent naked holding boys cocks for inspection and measurement.

Then it was the time for Graham to be measured, he stood and proudly allowed Sarah to measure it, it was so much bigger then the other boys, so much so you could see the look of shame on their faces and the way they slowly one by one started to cover themselves with their hands.

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I am not sure what was said next but all the girls got up and one by one and moved over to Graham, and with Sarah holding his cock still they all preceded to give the end of his cock a peck kiss on the end.

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I was kneeling on the roof still, cock in hand trying as hard as I could not to shoot my load, watching this orgy of young flesh, then before my eyes Sarah got on her knees and kissed the end of Grahams Cock, but instead of the quick peck like the others she slowly kissed the end, Graham was not daft, just as her lips touched the end he thrust forward and she took his bell in her mouth, she didn’t seemed too concerned, but all the girls screamed loudly,

Sarah pulled away and then to I think Grahams surprise came back and done the same again, then when she pulled back she must have said something because all the boys moved around her and one by one she sucked once the end of each cock in turn.

The boys looked in agony, there faces showed they were all bursting to cum, then Sarah leant through the boys and grabbed Mandy by the hand and another girl Denise, who was a large girl, overweight but a pretty face, and had large breasts for her age, Sarah made them both kneel next to her and then the other girls under instruction I think moved round behind the boys and each girl put her hand through each boys legs and held there balls.

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Then one by one Sarah sucked each again once , and made Mandy and Denise wank them in turn when she had finished and one by one each came over the three in the middle. None of the boys shot much of a load, but enough to leave dripping spunk on the girls in the middle, then Sarah got to Graham and sucked him long and slow, taking nearly half his cock in her mouth, then I nearly died as I watched Mandy do the same, slowly the first time just the end of his cock, but then sliding straight back down till she too had taken half of it into her mouth, she pulled back and let it loose and Sarah moved Denise closer, I was expecting Denise to do the same when Sarah got Denise to squeeze her tits together and then pushed Grahams between the soft flesh of her large chests and preceded to fuck them, 3 or 4 strokes and he shot his load all over Denise’s chest and face.

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A huge cheer exploded from them all and they all fell about laughing, poor Denise was still on her knees covered in loads of cum, she tried to wipe it off with her hand but it made it worse, she had cum in her eyes, up her nose and great lines of spunk on her tits.

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I was just about to shoot my load when I heard a noise, I looked round and realised I was in direct sight of my neighbours bedroom, they had not spotted me on the roof, but were moving around, but if they did how would I explain being on the roof in the middle of the night in only sandals and a raging hard on poking out of my joggers, I knew what I would think. I slowly and quietly backed away down of the roof and decided to go back to the kitchen door.

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When I got to the kitchen door it was still slightly ajar, not enough to see anything, but the girls where in the kitchen, I stood there quietly listening, but all I could actually hear was my heart thumping in my ears, I did hear Sarah though, she was gloating at the fact that she had got her revenge on Denise, I don’t know what for, but she was certainly pleased with herself.

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I returned to the caravan and my wife was still fast asleep, I listened some more, hearing the girls giggling about what had happened and then heard Denise deny that she had got off with Sarah’s old boyfriend, and the girls being mean to her about the fact they knew she had, so that was the revenge, they were all obviously all getting back into there sleeping bags and discussed what had happened that night for a while before they seemed to fall of to sleep.

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