My b/f Tommy is 18 and his mom, Nan, had him when she was only 15 so she is in her early 30s and could pass for my own sister. He told me from day one that they had been into sex with each other since he was 13 but that did not bother me because I had a long time bisexual affair with my own sister, Penny, who is 16.

Tommy's mom, Nan, liked me from the start and invited me to be with Tommy and her any time. I did it and it was wonderful. She started teaching me stuff right away and one of her favorite things was to lick and suck me and Tommy while we fucked until he or I came. I could not get enough of it and begged for more as soon as Tommy could get hard again. Nan sucked my clit while Tommy fucked me, then she licked Tommy's balls and took them both into her mouth and sucked on them. He almost came into me that way. We could sometimes feel her tongue flicking between Tommy's hard, driving cock and the inside of my pussy.

However, Nan talked me into eating her and Tommy out while they fucked, as well, so I did. I loved it but not as much as when she was doing it to me and Tommy.

We talked Penny into joining us and I noticed that she and Tommy really struck it off and fucked for long periods of time. She was on the pill and Tommy would come into her, stay hard and keep fucking. Nan ate them out often while they fucked but she could do it only for so long. I replaced her but they outlasted me as well. They just fucked on and on while Nan and I got it on and watched them while we fucked.


Soon enough Nan and I realized we were not getting fucked enough so she got her toys out, including a mammoth pink dildo that Nan took in up to it's hilt. The toys only did so much. Nan did tell me to be patient while she rubbed her clit on mine until we both came. She was right. Tommy returned from his Penny feast and started fucking me and Nan again. Our parties always lasted for at least two hours.