Skinny Dipping With Big sis

When I was In high school we lived out in the country and down the road from a country club/golf course. Me and a buddy use to sneak in late at night after they closed and skinny dip in their pool. I told my big sister who was three years older than me what we were doing. One summer night my sister woke me up and wanted me to show her how we got into the pool. When I got outside she introduced me to a guy that she had just went on a first date with. I lead them between the fields and across the golf course to the pool. The place was closed and . We stopped at a little bench and I told them that this was where we always undressed and left our clothes. Her date immediately began peeling his clothes off while me and my sister just looked at each other. Then while she watched I took my clothes off. Now me and her new guy were standing there naked. I was happy to see that my cock was about the same size as his. Then my sister shrugged her shoulders and pulled her tshirt off over her head. She had fairly large boobs and they seemed to strain against her bra. She slid her shorts down and stepped out of them. She reached behind her and unhooked her bra and took it off. By this time my cock had grown hard and was standing straight up. She smiled at me when she saw it and told me thanks for the compliment. Then she pulled her panties down. This was in the 70s and nobody shaved like they do now and I looked at the thick dark curly patch of hair between her legs. Then her date said let’s go. I led the way with my hard cock pointing out in front. We got to the pool and I twisted the lock the way we had figured out to do to open it. We quietly slid into the water. We all floated around for about a half an hour or so and then they kind of drifted off together into the shadow of the diving board. When I floated around where I could see her date was sitting on the edge of the pool. She was still in the water in between his legs. I could see her head bobbing up and down. I stayed away but kept watching. Pretty soon she pulled her head back and I could see her arm jerking up and down. Then her date slid back into the water and shortly after that they were ready to leave. We climbed up the pool ladder. I was last and my sisters foot slipped on the ladder and that left her lovely ass right in front of my face. I put my hand on her ass and helped her up and out. We walked back to the bench and got our clothes. My sister said she didn’t want to get her clothes all wet. I told them that we usually walked across the golf course naked and then got dressed on the other side. By then we were dry. So we walked across the course totally nude in the moonlight. My sister and her date walked ahead and I hung back mainly so I could watch her gorgeous ass sway back and forth as she walked. When we got to the other side there was another bench for golfers to rest on. I sat down on it and started to put my boxers on. My sisters date kind of wandered off a little bit. She walked to me and knelt down in front of me and put a hand on each of my knees and pushed them apart. She looked me in the face and said that it hadn’t been fair to make me watch her give her guy a blowjob. She said I’m going to make it up to you. Then she reached between my legs and grabbed my already rock hard cock. She stroked it briefly and then lowered her head down and took it into her mouth. I had never felt anything like it before. She licked and sucked on me for a couple of minutes and I couldn’t take it any longer. I whispered sissy I’m gonna come. She bobbed her head faster and when my body jerked with the first shot she shoved as much of my cock as she could deep into her mouth. I pumped and pumped the biggest load I had ever had and she swallowed it all. When I was done I leaned back on the bench exhausted. She pulled her head up and whispered in my ear. She asked me how was that. I told her it was heaven