She replied that she and her husband had sex at least three times a week and sometimes more. I was shocked and jealous at the same time. I began to as... her questions about their sex lives and the wine gave me courage to probe into delicate details of their sex lives. Karla said don’t be shy ask anything you want and I will give you an honest answer.Questions were running through my mind at a hundred miles an hour. Do you perform oral sex on him, and does he go down on you? Karla was trying not. Then the next thing I notice, my cock feels wetter and warmer than it did in her mouth and I open my eyes to see Ally straddled on top of me riding my cock.“mmmmmmmmm Matt your cock feels so good in my pussy, I love how you stretch and fill me! God fuck me Matt, FUCK ME” she kept screaming, at first I was afraid people would see us fucking in broad day light in a park but after she screamed for me to fuck her I didn’t care who saw! I grabbed her ass and slammed my cock into her and she let out. I was a little hesitant, at first, this again was my younger sister, being held down by her friends.Then is that bitchy voice I've heard from Sara before, "you gonna do it or not!" With that & a quick thrust, I was in! she felt great, a little stretched and that was to be expected, my cock is not as thick as my hand.Who would have known after the way it started, I'd finish up on my k** sister. I was getting that familiar feeling building in my balls, pussies bouncing on my cock, I was gonna cum. " There's a few more things I'd like to check out," Denise said. "How'd you like to wait here while I go do that?"Lissa nodded, and Denise turned to me. "I expect you'd rather stay with Lissa than come with me, Jason?"I wasn't sure what the "plan" was, though I was certain there was one. I figured the correct choice was being presented. And it was what I preferred, anyway."I'd definitely rather sit here with Lissa than keep walking around." And added, with humor, "I'm a male, after all -- males.