It was mid August and my son would soon be going off to college. We had been having sex for about 5 months. I was going to miss my son and the sex but I knew he needed to do this for his future. Many of his friends were also going off to college and he was going to miss them. He asked me if he could have an end of the summer party for all of them as one last chance to get together. Even though my Dad had past away my Mom still owned a lake house about an hour away from where we lived. It was on the water and had a pool as well. I suggested that as a place to have it and he said it was a great idea. Everyone would meet there on Saturday and stay the night going home on Sunday.

I went shopping for all the food and stuff we would need for the weekend and he and I drove up early Saturday morning. After putting everything away I checked out the pool to make sure things were working. It looked great and was a hot day. I decided to get into my swimsuit and get some sun. It was a black string bikini that I bought special to drive the young boys crazy. My son told me I looked smoking hot and the guys would think so too. I went down to the pool, which overlooked the lake to pick out a good spot moving my lounger. I started on my stomach and decided to undo my top to minimize tan lines. I set it aside next to the lounger. My son came over and began to rub suntan oil on my back without me even asking. It felt really good to feel his strong hands massaging the oil in.

I rolled on my back and told him to do my front. He poured some oil on his hands and massaged that into my 36D breasts. He was very familiar with them by now having access to them almost every night. It felt so sexy to have him do this outside. I wondered if anyone could see us from the lake. At some point he undid the side strings on my bikini bottoms. He pulled them off easily and rubbed the oil into my bald pussy. I opened my legs exposing my swelling lips and clit. He soon dropped his suit and I saw how hard he was. The lounge was big enough and strong enough to hold our combined weight. He moved on top of me and getting oily himself. He was kissing me when I felt his big cock start to slide between my lips. It was oily but still a tight fit. He pushed forward impaling me. I sighed and arched my back at the feeling.

As he started to stroke I whispered in his ear that it was risky this weekend and not to cum in my pussy, I might get pregnant. He nodded and continued to stroke. We had gotten very good at this. Our bodies were in tune with each other. I loved fucking my son and would miss the frequency. Oh he would visit home and I would go see him, but it just wouldn't be as often. He pulled out for a moment and rolled me over. He put it right back in taking my breath away. His cock was so big, even after 5 months of getting used to it I was still stretched. I was letting him have his way with me but I was a little nervous he wouldn't heed my warning. I turned around and told him I wanted to be fucked in the ass. We had done this a couple of times and I knew he loved it. He asked me if I was sure and I said just do it and hurry.

He slowly pulled his big cock out of my pussy. He rubbed it on my ass getting some more oil on it. He place the big head on my rosebud and pushed. I have to be really horny to enjoy anal sex and at this moment I was. I pushed back into it as I slowly opened for him. This was always an adventure especially with a cock the size of his. His big head eased inside me and he stopped letting me adjust to it. I felt a little pain but I wanted him inside me. Slowly he pushed in as my ass swallowed more and more of his shaft. He groaned and said how tight and hot it was. He took about a dozen stroked and soon was buried balls deep in me. It felt like his cock was in my throat. He started to stoke faster now and I knew he wasn't going to last long in my tight hole.

I was pushing back onto his cock just as hard as he was shoving it in me. This was raw fucking like two animals. We were both groaning and growling and were covered in sweat and oil. His big balls were slapping my pussy lips. My clit was on fire and I exploded with an orgasm. Just as I did he began to unload deep inside my ass. It was a big one that went on and on. He cried out as he finished inside me. We were both out of breath as he pulled free of me. As I rolled over I looked past him to the lake. I saw a couple of boats that had stopped near our dock. I guess they had been watching us because when my son stood up they started cheering and whistling. I rolled my eyes and we both laughed. I grabbed my suit and headed for the pool.

I jumped in both to cool off and wash off. I heard some sounds from the house and knew the other kids were arriving. I reached for my suit which was on the side of the pool to put it back on. When I did I realized all I had was the bottoms. I must have left my top over near the lounger. I went ahead and put the bottoms on and stayed below the water line for now. About a dozen of my son's friends came out of the house and walked to the pool. It was both boys and girls and all had graduated and were going off to college. Some had been her before but the others were saying how cool a place this was. They saw me in the pool and walked over to say hello. Even under the water it was obvious I was topless. I saw a couple of the guys elbow each other and smile. One of the girls, a real pretty cheerleader, walked to the edge of the pool. She looked at me and smiled and then asked if it was OK for her to go topless here like I was. Another girl asked the same thing and in my present state I couldn't say no. I told them sure if they felt comfortable and the guys didn't mind. The guys all laughed and blushed some too. The tops came off and soon all the girls were topless because of peer pressure.

I decided it was time for me to get out of the pool. As I climbed out I could feel eyes on me. I wasn't embarrassed at all and actually loved the attention. I dried off and my son walked up to me and handed me my top. I looked at him with a smirk and asked if he did that on purpose. He just smiled back at me. I spent the rest of the day with just my black bikini bottoms on and enjoyed every minute of it. There was lots of food and drink. They were all over 18 so I didn't mind the beer drinking. They would do enough of that soon at college. Nobody was driving home tonight anyway. They were all good kids and nobody got too rowdy. I am sure there were some hook ups and sex but nothing out in the open. My son eventually made it to my bed late in the night without anyone seeing. He was too drunk though and fell asleep.

I woke up with the sun and made my way out of the room alone. I went to the kitchen to make coffee and went out on the deck. This was my favorite thing to do here. The sunrise across the lake was spectacular. I was in a big tshirt I often used as a nightie. I figured nobody else would be up this early. I heard a noise in the kitchen and out came my son with a cup of coffee. He was wearing boxers and looked tired. I laughed at him and told him he missed out on a hot chick last night because he drank too much. He took a sip of his coffee and looked at me and smiled. He looked back into the house to see if anyone else was there. He stood up and took my hand.

He led me down to where the pool loungers were. There was one that was till in shadow. He took my t-shirt off and then took his boxers off. I sat on the lounger and sucked on his cock getting it hard. I loved morning sex but this was risky. If someone came out of the house and looked over here they might see us. When he was hard I laid back and told him to hurry. He opened my legs and got between them. Once again my son placed his big cock against the opening of my pussy. As he pushed it in I reminded him to pull out before he came as I was sure I was ovulating. I wanted him inside me so badly. He slowly entered his mothers pussy and when he was as far as he could go I held him close. I crushed him to my big breasts as he stroked in and out. We kissed as lovers not like mother and son. His cock felt like it was made for my pussy. I wrapped my legs around his hips as he thrusted. We kissed almost the entire time he fucked me. Finally he broke the kiss and said he was about to cum. I said then to pull out and shoot it on my belly. Just as I said that I heard a noise.

We both turned and looked back to the house. Some of the kids were in the kitchen. Any moment now they might walk out on the pool deck and we would be caught. That's when I felt it. He was cumming. He hadn't pulled out, he was still inside me. It was too late. I held him close as he finished and told him it would be OK. He pulled out and we quietly got dressed. I walked back to the house and into the kitchen. I was wearing nothing but a big t-shirt and my pussy was full of my son's seed, but I asked then what they wanted for breakfast. Most were too hung over to eat but some did. About noon time everything was packed up and we made the journey home. Some were actually leaving for school on Monday but others left later in the week. We got my son situated in his apartment and I drove home alone. Of course I cried when I left but I knew he would be fine.

Ten days later when my period was supposed to start it didn't. I didn't panic and waited another week. Nothing happened and another week went by. I decided to go buy a pregnancy test. I was too nervous to use it and waited another week and still no period. I had to know so I took the test. I stared at the little window for a long time because it was positive. I was pregnant. My son was off at school starting his freshman year and he was going to be a father. I was 37 and still in prime childbearing years but I wasn't sure if I could handle this.

I waited until I was 6 weeks late and decided I needed to tell him. We would make the best of it. He would stay in school and I would have the baby. I picked up my phone to dial his number. Right before I pressed it I felt something. It was a cramp. I waited for a moment and there was another. I went to the bathroom to check and found my period had started. It lasted the normal length of time and a few days after it was over I took another test which showed negative. So I wasn't pregnant after all, or was I and lost it. There was no way to know. We would just have to be more careful.

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