Mum and dad usually had a date night on a Friday so we were left alone. Sometimes when they got back we would hear mums screams from dad fucking her. One night my sister encouraged me to come have a peek with her. So we crept out of our room and went slowly downstairs. We could smell the alcohol in the air. It was the same every Friday, they would get pissed and come fuck in the living room.
I sat next to my sister ans we watched in amazement as my mum sucked dads cock. He held onto her head and rammed it down her throat. She must have enjoyed it because she moaned with pleasure. Then he went down on her. Watching this gave me a hard on. I wondered why my mum had no hair by her pussy yet dad had hairy balls. I thought it must be only males that grew hair there. Well mum loved her suck because she used the filthiest words on dad. We giggled as we watched them fuck the hell out of each other. All of a sudden they both just let out a scream and collapsed on the couch. Their breathing was heavier and we could hear them whispering to each other.
We went back to my sisters room and we started to laugh about what we just saw. I was still hard though and my sister took notice of it. She asked me to show her my cock. At first I protested but then gave in. At first she laughed and looked at it strangely. She then touched it and at first her hands were cold. Then it felt like it grew harder with her touch. She felt it to because she asked me what was going o. I told her I didnt know and she continued to squeeze on it. It felt good. She knew it because she saw my reaction. What she did next totally shocked me. She stuck my cock in he mouth and started to suck on it. It felt weird at first but then got better. Before I knew it, I felt the urge to pee. I told her and she stopped. It was an amazing feeling. I told her now I knew why dad liked it so much. She then lay on her bed and took of her pants and panties and asked me to do the same to her. I had to do it because she did it for me. At first it was just salty. Then as I got into it, it started to get a bit slimmy. I liked the taste of it and started to lap up every bit of juice I could. She Let out a little moan and asked me to stop. She to was breathing heavy. She told me it was the best feeling in the world. That night we took turns to suck each other off. I didnt come or anything but I was loving it.
We continued like this in secret for a few years. At school the boys spoke about sex and so when we were alone we decided to check it out on the net. Both of us were so aroused that before long we were both naked and I was trying to put it in. We struggled and I couldnt get it in. We were also afraid because my parents were home.
We didnt try the next few nights because of the amount of homework we had.
That Friday we were alone as our parents had their date night. We decided to give it a try again. My sister spoke to some of her friends and they told her what they did. She didnt tell them about us because we already had found out about i****t at school. That night it worked like a charm. I put it in and we fucked like crazy. She loved it as much as I did. She insisted that I pull out when I felt the urge to come. She then would suck me until I came. By know I had been ejaculating often in her mouth so it wasnt anything new.
We continued like this for ages. She finished school a year ahead of me so she went of to university. I was unhappy but when she was down we continued our sessions. When I finished school, I went to the same university as her. Dad rented a two bedroom flat for us but we never used thed second room. we slept with each other. Everynight we did it. We experimented in everything possible. I would take her out to dinner with no underwear and finger her under the table. We would fuck in the university toilets during our break. She loved sex as much as i did.
She qualified as an accountant and me as a doctor. We chose to live in a different city from our parents. We lived together as it looked like we were sharing expenses. My parents loved the idea and encouraged us to do so. We would mail pictures back home of us and friends saying that they were our new boyfriend or girlfriend. Then we would complain and state the relationship ended. Our parents never encouraged us to get married but insisted that we find decent partners.
When my sister was 28, we found out she was pregnant. Yes my child. We loved each other and we discussed having the child. We made up a story about her meeting some guy whom she dated. It was only after she found out about being pregnant did he tell her that he was married and wasnt going to leave his wife. My dad was a lawyer and he wanted to sue his ass off but we convinced him to let it be. My sister told them she wanted to have the child. I told them that I would be around to raise the child. I told them that I had no intention of getting married soon because things at the hospital were hectic. They thougth that I was a good son and was proud of me.
We went back feeling guilty that we lied but we had to keep our secret. I never knew fucking a pregnant woman was so good. Our baby was born in early May, a spring baby. She was beautiful. Anyone who says that i****tious relationships breed deformed children are totally wrong. She was quite normal. Our parents died in a horrible accident as they were driving down to spend time with us. We were saddened by their death but also saw opprtunity. We decided to move to the UK where no one knew that we were related. We finally got married and had the wedding my sister, well now my wife always wanted. We have two children now, thankfully two girls because we wouldnt want them ending up like how we did.
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