For as long as I can remember, one of my wife's nieces would always sit on my lap every chance she got. She would straddle my legs with her legs and sit with her ass directly on my cock. As she got older, it began to have an affect on me. One day I got hard with her sitting on my lap. Being as young as she was, I sat still hoping she would not notice my erection. When she got up she looked at me with this naughty look on her face and smiled. It was a knowing smile. The little cunt felt my hard cock and she was letting me know that she felt it. From that day on, every time I would get hard with her sitting on me I would flex my cock and I could feel it pushing up against her ass and crotch. When I would do that she would ever so slightly shake her ass. That was her way of letting me know that she felt it move. We began a regular thing. I would flex my cock and she would wiggle her ass. There were a few times when I almost came in my pants.
One day she sat down on me with her legs straddled one of my legs. She would lean forward and then back against me, then forward again. I also noticed when no one else was looking she rubbed her crotch on my leg real hard.
Like most of the times she sat on my lap she would later eventually jump up and run to her room. She would be gone for a while and when she returned she would sit on the sofa or in a chair, but never would she sit back down on my lap.
This little cunt was getting worked up and probably going to her room to masturbate.
One day she made the mistake of sitting on my lap when I stopped by and no one else was home. I let her move her ass around for a while until I figured she was pretty well worked up and then I made my move. That day I ended up masturbating her with my hands. I did it through her pants and panties but it was a start.
Masturbation between us has become a regular thing. I haven't tried to fuck her because I am after all married to her aunt, but I enjoy very much playing with her young pussy. I will also say that her hand feels wonderful sliding up and down on my cock.
I plan to take things to the next level pretty soon.