My grandfather had both of us in the bedroom with him almost before they had gotten out of the driveway. He asked Robin if she had ever seen a boy nak...d, and she said yes, she had seen her brother in the bath a few times. Grandfather said we were going to play a game and had both of us strip naked, and he did the same. Robin was a bit hesitant but went along when she saw me taking my clothes off. She and I had always been close, and she trusted me enough to go along with anything I did. Once. Most times I would just wank and get it over with. Other times I would wank several times per day and not be able to cum. Then there were the late night porn sessions into the early hours while she was lying next to me. In all honesty I was addicted to porn and it was beginning to affect my sex life and porn did seriously damage my professional life. I knew it was a big problem, but did not know what to do. That all changed when she caught me watching porn with cock in hand. I told her a friend. I was looking at Caitlin."Well," I said, ignoring the outraged objection to Caitlin's forward behavior. "As it turns out, my name is Bob. But I'd be really surprised if you were my niece. I could only wish to have a niece like you." I looked at the other two girls. The second girl was Hispanic, and had lovely eyes. She was also a little pudgy, which I knew bothered her, based on the small salad on her tray. "And please, by all means sit and share the table with me. It isn't every day I get to. Now he lathered his hands & started massaging my right breast. His strokes were very much erotic he took my nipple in two fingers and stroked like the spokes of bicycle in circular manner. Again he repeated the same to my other breast also.Now comes the final part.I was waiting for this time finally he came to my pussy.He opened the my vagina and poured some oil & started massaging on the mound for about 10 mins and part slowly started inserting his fingers in one by one as my vagina expanded.