She wanted to be a part of it with me, she wanted to help me, pick outfits out for me. Unbelievable, she was not only accepting it, she was encouragin... me to dress up. She said she couldn’t wait for the next time she was staying over… And so, to the week-end. When she first arrived I was as nervous as hell. Still not quite believing it. At first we hardly mentioned it, we just had a normal evening, a meal, a bit of tele, etc. As the evening got on though I decided to get my suitcase out for her. As it was, mother nature called me and I shagged Kelly out of the bathroom.I heard her turn on the television in the sitting room. A few minutes later Kelly nearly leaped from the couch. Someone knocked on our door. The towels and Kelly’s clothes were in the bathroom. The pizza wasn’t due for nearly another forty-five minutes. Kelly walked to the door and peeped through the hole.Damn, it was the pizza guy! Kelly opened the door just a crack and expressed her surprise to the guy as they weren’t. "Yes, my dearest nephew" She bent down to kiss him again as she slowly started to move up and down. It was hard to tell if it was her sliding along his cock or whether he was still forcing her with his strong hands. Whatever it was, she was fucking him slowly now, as deep as she could take him again and again. It suddenly occurred to me that they weren't using a condom! She was riding bareback, and it wasn't just fucking now, they kissed profoundly swapping spit and touching tongues it became. Her efforts were in vain, I was determined to tease this minx as she had teased me at dinner. Ever so slowly, I pulled the thong to the side and slid my finger down the valley that separated her butt cheeks. Sinking deeper as I inched closer to her brown hole, I felt her wetness soak my slacks with her maiden oil. My finger reached her backdoor and when she felt the tip of my finger touched, a loud moan filled the room. I circled the puckered hole several times and her moaning became louder..