One afternoon last week I came home early from work. My fifteen-year-old daughter Kelli was home from school. I walked upstairs and heard noises. Moaning. Kelli's door was partially open. I peeked in and got a shock. Kelli was laying nude on her stomach, with her crotch slowly grinding a pillow. The way she was facing she couldn't see me.
My cock sprung to an instant hard on. For an instant I didn't see her as my daughter. I saw her as a beautiful young nude woman who was enjoying a sexual moment of self pleasure. I knew she had a nice firm well shaped ass but I've never seen it nude. I unzipped my pants and began to slowly stroke myself. There was a light glisten of sweat that covered her body. I tried to remain quiet.
She humped a little bit faster. In between the moans I heard her whisper, 'son of a bitch.' Her body tensed up and quivered. I was very close to erupting when I heard a soft 'shhhh' in my ear. My heart flew to my throat. It was Gina, my wife, standing behind me.
She smiled and said 'We can finish that off in our room.' She gently grabbed my cock and used it as a tow to lead me to our room where I released my excitement with her for about half an hour. Kelli knows she was seen. Nothing has been said. Gina told me that she had a mother-daughter talk with Kelli a few months prior. Masturbation was the alternative to actual sex. I agree. 'masturbate, not impregnate.'