Years ago I married a woman with two daughters. Her oldest, Lisa and I always got along and could talk about anything. When she turned 18, she spent the weekend with her friends, a married couple, who gave her kind of an adult birthday party. I'm not sure what if anything happened but they did give her some different gifts.
When she got home it was just me and her at home. She was in a great mood and showed me her gifts. First was some body lotion and then a small wind up toy that hopped around. I've seen some before that were horses or dogs or whatever but this was a little erect dick. Her last gift was a life size anatomically correct dildo. It looked and felt perfectly real. I also remember thinking it was almost exactly the same size as me.
Some time later, I was once again home alone with Lisa. I went to her room to talk about something, to find her in bed on her stomach with the covers completely covering her reading a book. We talked for quite awhile and I sat on the bed next to her. We continued to talk and she began to wiggle, trying to scratch her back. I reached over and rubbed it for her through the covers. She guided me to the itch as I scratched harder. Still not quite solving her itch, I reached under her covers and scratched her bare back much to her relief.
We continued to talk and I kept my hand on her warm back. Eventually I began gently rubbing her back as we kept talking. She put her book down and laid her head down on her arms. I repositioned and began giving her a back rub, the covers moving down more and more as I rubbed. She stopped talking and just laid there enjoying the massage letting out a soft moan every now and then. I don't know when it turned sexual but my hands were now rubbing around her sides caressing the outside of her breasts and down to her back to caress the great mounds of her ass. Before long the covers were gone and my hand was between her legs rubbing her soaking wet pussy, her hips now raised, legs parted giving me total access to her cunt.
I wanted to fuck her so badly but managed at least a little restraint. I did however see her dildo next to the bed. I slipped it into her and I pumped it in and out. Faster and faster it went as she grabbed her pillow hard and her moaning increased. Her orgasm came hard as she collapsed onto the bed. I really wanted to drive my rock hard cock into her but felt I better leave and take care of myself elsewhere.