The birthday party:

James was having his sixteenth birthday party at his family’s cabin at the lake. He had invited a six of his friends and they were going to spend the night at the cabin. It would be the first time they would allow to stay there by themselves, well almost by themselves. There was the matter of the fact that neither he nor any of his friends had a driver license. So his step-sister Pamela who did have a license would have to be there as well. And since she didn’t want to be alone with a bunch of boys his little fourteen sister would be there as well. Her name was Samantha. There family was somewhat unique for this part of the state in which they lived in that they were nudist. His friends always loved coming over to spend the night at his house. Partly because they enjoyed their freedom of being able to walk around the house naked but mostly they enjoyed seeing his sisters naked. Even he’d have to admit that both of them were very hot, especially naked.

They arrived at the cabin at 3:30 in the afternoon and immediately went inside to strip. They placed tag for a while, I know it sounds corny for teenagers to play tag but if you’ve never played it the nude try it some time, it can be interesting. Especially if you are a boy and you tag a girl with your hard dick.

After that they played twister, Samantha didn’t participate in it but spun the arrow and directed the players how to move. Of course not everyone could play at the same time because there were too many of them to do so, but as one person would fall out another would take their place. A few interesting things happened during the game. Once Pamela was positioned in a way that, if you were looking at it from the right angle, appeared as if she were swallowing one of the boys dick. And another time, again from the right angle, appeared to have a boy’s dick up her sex. It wasn’t in either case of course, but it was an erotic site.

After the game they eat some frozen pizzas and went to bed. The next morning they got up and ate breakfast then played pin the tail on the donkey. This was interesting in its own right as the girls were the donkeys and got on their hands and knees while the boys got paper tails with tape and tried to tape the tails onto the girls butts. There were several misses and the girls egged the boys on by teasing them. Finally James was behind Samantha while Bobby, one of the other boys, was behind Pamela. They both said in unison, “I’ll pin you this time.” They didn’t know how right they were, for as they moved forward both almost simultaneously reached the girls. But instead of pinning the tall onto the girls, each girl got a shock as a hard cock slid into their unprotected cunts. Both girls slots were somewhat wet from having been teasing the boys. But there was a slight difference between them. Bobby’s cock went in effortlessly all the way to the hilt as she wasn’t a virgin. Samantha on the other hand was a virgin and James had to push harder to get in. He felt it when her barrier gave way and she let out a small cry of surprise. The tails were tossed away as each of the boys turns fucking the girls. The other party games they had planned for the day went by the wayside as they had an all day fuck fest. They even found some viagra in their father’s medicine cabinet which allowed the boys to keep going on and on well into the night.

The next day they continue the orgy until it was time to go home. No one ever said a word about what went on at the cabin that weekend, however their parents had a good idea what had happened when both girls turned found out that they were pregnant a few weeks later. No one knew which of the boys got the girls pregnant and no paternity test were ever preformed. The girls simply had the babies and life went on. However as the babies grew up they looked more and more like James. (Both babies were girls by the way.)