"Hey, you said we could have a great piece of ass!" one of them reminded Dan. "I never said who's ass!" he responded and he came over to me and with ...Mitch's help they turned me over so my head was facing carpet and my ass was in the air, protected only by those frilly white panties. My wrists were still tied to my ankles so I felt even more helpless than before but at the same time strangely excited. Since Dan had been the first guy to fuck me in the ass, he naturally felt inclined to show. He said, "oh yeah, makes you a great swimmer, strong and full of energy. He then said, "here, you can try mine" with that he stood up in front of me and his hard cock was at my eye level. I nervously said, I don't know. And he responded, "just try it and if you don't like it no big deal". I said ok, and coach began to stroke his cock in front of me. I watched as his ran moved back and forth and his big ball sack tightened against the underside of his cock. It was odd but exciting to watch him.. "Fuck” I thought, what have I done? I assumed I would get kicked out of the house and become a reject to my family. The following morning, although nothing was said, the tension was unbearable and the silence was awkward. For the days following my sister was non-existent. While she stayed at a friend's house I was left to ponder. My parents had no idea and I had no intentions of them finding out.When my sister returned three nights later she spilled the story to our parents while I was out of. Or maybe it was the crackling firelight and the blanket of snow that insulated us from the rest of the world. And on some level I probably felt that I did deserve a reward, according to a sort of caveman code of ethics that predated the age of chivalry by thousands of years.I brushed my hand across her breasts, playing with the nipples that I had been feeling against my chest, making them grow and harden. She wriggled out of her panties, and helped me out of my underwear, and then she lay on.