"Yeah, Dad. Just, processing"Mom and Dad had been together since they were 16. I don't know if they ever spent a night apart. Their love was something...you don't see every day, especially these days. Hey, they weren't perfect or anything, Mom could be quite the bitch sometimes. But she also always did her best by us kids.Dad and I talked and decided we should have a big party for Mom. Not a 'going away' but a "Mom Appreciation Party."I called my sister, Jesse, and we began making arrangements. WTF did I just hear? Their into wife swapping?? Several couples were talking to each other. Girls standing in front of the guys. All different size girls. Not just their tits, from petite with smaller tits to big girls with big tits. I could see the guys dick heads peaking out between the girls legs past their pussy. One guy was moving his dick back and forth a bit between his girls closed legs. From the flushed look on her face and her erect nipples she was enjoying his dick rubbing against. "I'm really sorry Linda, but I am running a marathon in the morning at seven. To be honest, I would really love to, it I weren't. I can't speak for Sylvia." I said it smiling warmly."It might be fun," Sylvia said smiling a flirty smile. I had committed but Sylvia didn't really commit."Well we are having a party at our place in two weeks, I'll send you all the particulars." she said. "Is it BYD?" I asked."BYD?" Linda asked."Bring Your own Date," I replied."Oh, I can arrange an escort for you,". After a few minutes of pleasuring Jenny's breasts and nipples, Kim continued kissing a trail to Jenny's collarbone to her neck and finally to her lips. They tongued passionately for a few moments before Kim got up and kicked off the panties, sending them flying across the apartment. While standing above Jenny, her exposed pussy a few inches over Jenny's face, Kim unfastened her white lacy bra and let it fall to the floor. My heart pounded at the sight of Kim's gloriously free tits, a heaving.