1. Camping and Fucking and Swinging


    Date: 10/25/2016, Categories: Fantasy, Anal, Authoritarian, Cheating, Cruelty, Cuckold, Domination / Submission, Exhibitionism, Hardcore, Humiliation, Incest, Voyeur, Wife / MILF, Author: 1843, Source: sexstories.com

    My wife and I lived in a condo in a nice suburban area for the last three years. Steph was cute, late twenties, big ass, nice tits, we had a great sex life. About a year ago, Mark bought the condo next to ours and became our neighbor. He was nice enough when we spoke, athletic and we seemed to get along well. He was always polite in front of Steph but had a little more of a crude edge to him when she wasn't around. A couple months ago, my sister Tina started dating Mark which was nice that we could do things as a couple; go to restaurants, concerts, etc. Tina was a couple years younger than me, more lean than my wife with bigger breasts and short dark hair while my wife had a wild mane of long hair. As a group we got along really well. Steph had set up Tina with Mark and they really hit it off. Before long she was sleeping at Mark's overnight. I wasn't thrilled by the idea of my sister having sex with this guy but he was nice enough and we were all adults. As long as he was treating her right, why would I care one way or the other? Truthfully, I didn't until one night that we had all been drinking wine. It was late and Tina and Mark excused themselves for the night and went home. Steph retired for the night and I was about to do the same. I was just turning off the TV when I realized that I could hear them giggling through the wall. All the condos were connected but I never gave it much thought. It was only now that things were quiet that I realized how thin the walls were. ...
    At first there was just girlish giggling. Tina was pretty smashed when she left. I didn't think much of it at first but I was a bit of a snoop and I wondered what they were doing now. I could hear him talking but not what he was saying exactly. I knew I should mind my own business but I wasn't. Instead, I just sat there straining my ears to hear what he might be saying to no avail. It wasn't until a few minutes later that I heard my sister moan in a very specific way that I knew exactly what they were doing. I couldn't believe that I was hearing them fucking and I couldn't stop listening. Tina was moaning now and I was getting hard in my pants. I couldn't believe it! I knew my sister was attractive but I had never thought of her as a sexual being until now. I had always looked a little too long when we were growing up anytime I caught a glimpse of her getting out of the shower or changing, but I always thought of it as teenage curiosity... until now. She moaned as a woman, like a porn star and in total satisfaction. I had to see what was going on. Opening the door onto our back patio, I leaned over the railing to peak through their window. I couldn't believe my eyes. There was my little sister, bent over the dining room table at a 90 degree angle, completely nude, legs on her tip toes, spread, while Mark was pushing his massive cock into her quivering wetness in long steady strokes. Their window was open and I could hear everything! His was clearly, the biggest dick I'd ever ...
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