I was growing bored of the ‘m4w’ section of Craigslist. It seemed to be the same ads, the same people, the same bullshit. But I still needed to ge... my fix. I moved to the ‘mw4w’ section and began to read the ads. I’d of course been there before but up to that day, never seriously entertained replying to them. One caught my attention immediately. They were a married couple in town on some vacation or conference or something. She was 36 and he was 48. They were looking for a bi-sexual female for. She told me to lay down on top of her and kiss her large nipples and stick my big horsecock in to her wet cunt. I did just that. It was the best feeling in the world to be fucking my big titted sister because it was so taboo and naughty that it was such a turn on. I have never been so hard than when I am in up to my balls in my hot sisters cunt. She taught me how to please a slut. To this day I can always make any slut cum.I shot my first of many more loads of brother cum up my big titted. She imagined herself like a cat as she gently licked her nipple and then captured it with her lips. She alternated licking and sucking, trying to mimic the motions Chloe had used to make her feel so good. The sound she made in response made gave her a thrill that she was doing a good job. She wanted to give Chloe what she had given her.Chloe’s body had begun to move more underneath Isla. Her searching hand had drifted down and her long fingers found Isla’s opening again. As Isla was licking. His wife was there and I recognized he definitely wanted to humiliate her. She was in her late 40ies and he in his early fifties, I guess. I got it that they didn’t have sex in a long time and so we went to their bedroom, got undressed and fucked a little. It was ok, just plain sex nothing special but not that bad either. We just did it twice at the whole evening both times in the ordinary position with him on top. In between he called his wife in to get us some drinks and also something to.