They were soft and jiggly and I could distinctly feel her nipples.“M-hm. Yes,” my mother said as I started trying longer thrusts, all the way in a...d out. Her hands were lightly caressing my back. She was attentively looking at what I was doing, occasionally shifting her hips a little. Her legs were wide open, and her nipples had become very big, jutting from the large dark areolas. My pace quickened instinctively and I was naturally alternating between rapid and deep hip motions, guided by the. " I shivered at the obscenity of what I was saying. I know it's wrong to let my son ejaculate his sperm in his little sister ... especially considering that the younger girl has been having periods for over four months now; and had finally finished her first regular flow a little over a week earlier. Somehow the danger of having my barely teenaged boy actually impregnate his eleven year old little sister with his incestuous sperm just increased the thrill of watching the two kids mating. I rolled her onto her tummy and pulled her ass toward me, she responded by getting onto her hands and knees. I swapped the vibrator to her pussy and slid into her ass, it was even tighter than her pussy, and her juices had spread so well I slid right in, the vibrator in her pussy still tickling my balls as I slid in and out of her ass. I reach and pull her hair and angle it so her face is just on show, and then I fuck her ass, slowly building up, telling * how she is my orgasm slave, and she. She would come up behind me and pat or squeeze my ass cheeks and tell me I had a hot ass. One night during an especially hot session, Jane allowed me to fuck her ass. It was the first time for her and I had taken my time warming her up. Her beautiful ass was properly stretched out and ready and I had lubricated her hole very well. I put her on her hands and knees and entered her from behind. Once she got used to the size of my dick, I was able to penetrate her fully. I ended up fucking her with.