Now that Tina had the baby l was able to fuck her in different positions, but our favourite was always her sat on my shaft to lift herself up and down... then when l was ready to deliver my sticky load deep inside my sister she would thrust herself downwards and l would raise my hips giving her the full length of my cock up inside her. As the first hot creamy load entered her womb Tina would fling her head back gulping in air and shouting ‘fucking yes, oh god fucking yess’, l kept my shaft wedged. " But she didn't look like a Shirley. She looked like a Mom.She offered me a cup of coffee and a plate of brownies that didn't come from a bag, I swear. We made small talk for few minutes. Then Charlie's Mom sat back in her chair, looked me in my eyes and said, "So, you know my Charlie."She looked so kind and almost hopeful. It was an obvious thing for her to say, nothing more than a conversation starter. The most innocent, non-descript remark imaginable but I couldn't seem to answer. Anyone. I caught him checking me out on several occasions and Im pretty sure he got a good look at my pussy a couple of times! I was getting more and more turned on at the thought of my son fucking me! All I had to do was think about it and my pussy would get wet and my juices would start running down my inner thighs. I knew something had to give! I guess at this point I should also say that I remarried about a year after Erics biological dad and I divorced. Hes a great husband who took Eric in as his. To my surprise I was expecting her to resist and squirm but instead she pushed herself backwards on my shaft causing it to enter her slowly and rubbed her clit to help her relax even more. She definitely had experience in anal sex, before I knew it, I was halfway inside her asshole, she grabbing the sheets and moaning deeply, not of pain but sounded more like pleasure. I began to pump my shaft slowly in and out of her warm asshole, she gyrated and pushed back often to take every inch inside.