It was a Wednesday, a night my parents spent together, as mummy was always working nights and Wednesday was her night off, it was their sex night, and...they both did not mind sharing that piece of salacious information with me, I mean how many parents would tell their thirteen year old they were going to fuck that night, that is what I meant by sexually open.Mom and Dad were a beautiful or handsome couple, they were in great shape for their ages, but daddy was the one I was naturally attracted. Some kept their panties and bras on while other went buff. Peter was the first to get in with me and shivered in the warm water. He stroked to me and when beside me whispered, "I would like to learn too but not with all the people around." Peter you are free and outgoing. I love you and wish you could join my army at home." Army?" It is really an academy. The boys run around naked half the time and have lots of fun with the other boys. The girls there play mostly with the boys but like to be. He broke off the kiss and started to undress me right there on the beach. He removed my top and bra and removed my skirt. He then stripped away his clothes and laid me down on the sand, he probably wanted to fuck me so bad, as his cock was already hard. I laid on the sand open my legs spread open and rubbing my now wet pussy while looking at him. Paul stood over me, took in the view for a few seconds then he knelt between my legs, placed the tip of his hard cock at the opening of my gaping. Before long Kate began to moan and thrash as she reached her orgasm. Paddys motions became faster and faster and he tried to bite her neck, presumably trying to prevent his bitch escaping. Then his jackhammering suddenly stopped and Kate announced that he was flooding her with what felt like pints of hot liquid. As I watched I could see a see through liquid seeping from her vagina alongside his penis and onto the rug. David continued snapping away with his camera taking shots of Kate with.