I was so excited and naΓ―ve, all of 19 and my dad was fucking me so beautifully that soon I could begin to feel those sensations building up inside me. Some women have trouble achieving orgasm, they have to strain, really concentrate to bring themselves over the edge. I normally was only able to do that with my own fingers or from being orally stimulated. Never just from having a cock inside me. But luckily that night I never had such problems. Orgasms have come to me as naturally as breathing, right from the time I had my first one, but I was wondering what the experience of having one with a penis would feel like, I'd heard so much about what it would be like. And now here I was straddling my own father and his beautiful long, hard cock.
For a few minutes I had been on the brink but had held myself back. Now I was ready to go over the top. So I closed my eyes and concentrated on the exquisite feelings brought on by my father's subtle upward thrusts. I pictured that long beautiful cock of his completely filling my vaginal canal, pushing back the walls with his thrusts, the tip of his cock slamming against my womb as I rode him. The image of all that was so wonderfully intimate, and yet so obscenely twisted, knowing that it was not the tip of any old penis pressing against my cervix, but my own father's!