I am 32 and he is 18 We were always very close as a single mom I was over protective of him. In any case, he'd seen me nude many times. Plus shared my... bed on stormy nights. Our state allows you to set up two or more campsites but someone has to be there over night so my son and I drove out there and pitched camp. We had some beers and I made campfire supper. We went to the lake to check things out I am 32 and he is 18I love to skinny dip and after seeing no one was around so in I went,. "Wait what? What kind of plans bro?"The alcohol was starting to burn off from the heat of our incestual mating, but Becky was still slamming her pussy back and forth between my balls and mother's now drenched cunt."Tell me, please tell me. What are you planning bro?" my sister begged."Well, if you really want to know." "I do, I do" she meowed, her body trembling with pleasure. I could tell she was just about to cum and cum hard."Ok, well I'm planning to cum soon and fill your unprotected pussy. She stepped into the water and grabbed the bar of soap. She dipped it in the water and lathered it up. She worked the heavy lather in smooth, even strokes along her slender arms and up and down her flat stomach. She sat down in the shallows and began rubbing her tits. She rubbed them in huge caressing circles, around and around.She felt herself glowing, even under the cool water. Touching herself like this in these circumstances always made her incredibly aroused. Maybe it was just the place.. We laid out our blanket and I stripped off all my clothes and asked her if she would sunbathe naked ,, my heart sank when she said no ...fuck fuck ... this wasn't the plan but I kept cool and teased her a little and she said she would go topless and think about it . It wasn't long till i noticed a few guys walking thru the dunes and blantly looking at her.. this was going to be a good day .Time to get out the food and drink and get thing on the move we ate and I opened my wine and poured her a.