Mom did come close once when I was stretched out naked on my bed pumping my fist up and down when she knocked on my door telling me she had my clean l...aundry. I scrambled fast enough that I don't think she knew. But it was close. But I have a sister, Becky, who, when this took place, was sixteen. It was the summer, I was entering my first year of college the next fall and Becky would be a junior in high school. I was up in my room and decided to get naked and get one off. It was about. ” I tightened my grip on her hair and pushed her back down until she was bottomed out with her nose pressed against me. “Look at me, Kitten,” I ordered and she looked up at me. I could see the delight in her eyes that she had taken all of me. “Good girl,” I praised her and began to pump her head up and down letting her come up for air every couple of strokes. I soon let go of her head and told her, “Now take Daddy home, his balls are getting blue. And don't forget to look Daddy in the eyes. I was trying to decide how to proceed from there when she began moving again. I took my hands away but stayed right there. Before I knew it she had rolled over and I was looking at her in the face. I glanced down her sexy body and melted at the sight of her boobs which were falling out of the gown. Looking down at her crotch I could see the wet spot that had formed where her thighs met. Convinced that she was still asleep I put a hand onto each breast and felt the nipples get erect in my hands.. She said sorry to me but I told her that it is ok. I putted my laptop on the side and I started kissing her. I took her tongue deep in my mouth and she loved it. I took my hand to her boobs and started rubbing her boobs hard. She was moaning. I putted my hand in side of her night gown and open her bra and started playing with her nipples. I took off her gown and now she was only in her panties. But she was all red and blushing. She stopped me and said that it is not right we are brother and.