She started for the bike and something in me snapped."Wait!" I said.She turned and came back toward me. Her face was the perfect image of a young woma... pausing for me to tell her why I wanted her to wait. Only later would I really understand she was just acting. She was a very good actress."Come here," I said. My mind was whirling. I'm not sure I was actually thinking things through. She came to stand right in front of me, those yellow-flecked brown eyes staring at me from under the bill of. I squeezed her boob and pressed her nipple. She had wisely unhooked her bra in anticipation of all these things. My story was going awry and nobody is listening to my story. They were all busy with my cock. The second girl leaned forward and took it in her mouth and sucked softly.Immediately another girl pushed her aside and took her position of holding my cock and dropped her boobs in my hand. All the six girls one by one took turns to suck my cock and have their boobs pressed by me.In the. She could now force and end to the session if she really wanted to. I just point her to a wooden board that’s fastened between two metal poles at about belly height.My sister quickly looks at me, then at the board, and then she quickly moves over and squats in front of it, putting her tits on top of the wood. Yep, that’s what I thought.Out comes a hammer and two nails, and I nail her nipples to the board. Actually I put the nails slightly behind the nipples to get more purchase and not to. I rise off her small body and look as I move in and out of her. My glistening cock smells its victory is near. I always marvel at the look of it as it slides out of her tight pussy. She clamps down and squeezes as the back stroke begins and she quite literally holds on until I back out far enough to break her grip. Her pussy then quite literally snaps back into place and the process repeats itself.I pick up my speed as I grab her hips. Her nipples swell even more and I am pounding hard.