I am so grateful to the girls who have told about how sometimes they have incestuous fantasies. I must admit that something that happened to me when I was 15 has given me many happy hours of jilling.

I have an older brother called Steve. He is pretty cool (for a guy) and good fun to hang around with. Anyway, this happened seven years ago. We used to horse around a lot. Nothing in any way sexual, just rough and tumble stuff. This particular event happened on one of those lazy Sunday mornings. Steve and I were late up (as usual) and our parents were already out. We got up and had a lazy breakfast on the lawn. Steve and I were just chatting and then something was said, (can't remember what) that suddenly had me chasing him. I think he had made some kind of cheeky remark. I was in a long t shirt that I had slept in and he was in PJ bottoms only. We chased around the garden and suddenly, we were wrestling and laughing like crazy.

It ended up with Steve letting me win (as usual) and me sitting astride him. I remember that he had gotten hard because I could feel it against my panties. I wriggled around and asked him if he quit. Suddenly, Steve groaned and pushed me off him real hard and rolled over. I thought I had hurt him, but he said I hadn't. He looked very red though. Then I saw the wetness on his PJ's and I realised that somehow, I had made him cum. I looked down at my panties and sure enough, there was sperm on them too. Steve was so embarrassed and rushed off into the house.

Alone in the garden, I was suddenly overwhelmed with the power of what I had done. I had made a guy cum. It was intensely erotic and it only made it more so because it was my brother. Right there and then in the garden I pushed my hand into my panties and rubbed myself off. Oh it was a glorious cum, hard and violent. I guess that the scent of his sperm only added to it. We were kinda wary of each other after that, but I used it for jilling inspiration for years after. Sometimes I just relived it as it happened. Sometimes, I would engineer the fantasy so that he actually slipped inside me. My "worst" fantasy is when, in my mind, I am still 15 and he pushes me off of him and onto my back on the lawn. Then he pulls my panties to one side and takes my cherry, filling me up with his cum. I know its really bad, but then maybe that's why it gets me off.

I wonder if any other girls have "family fantasies"?