Then she said that Kaitlyn wanted to see my penis for herself because she has never seen a guys thing before. Kaitlyn wants Heather to try to catch me...again sleeping so she can see for herself. I just shook my head. Bad idea I said. Heather said think about it. I said I already did.“So are we past the telling stuff and now we are on the showing stuff,” I said trying to calm myself down. She said, “Ok I will show you now.” She skims off her shorts and I’m looking at her tiny panties. “Now what?. Within the hollow cow I was sure I could hear the furious beating of my heart echoing around the wooden cavity and down my thighs I felt the trickle of warm fluid.My eyes begun to adjust to the darkness and as best as I could I turned my head to look at my situation. In the dim light from the open mouth and glass eyes of my cow I saw my naked body coated in a thin sheen of perspiration caused by the warmth of my self imposed prison. I held on to the wooden rods at the head of the bench and. "We all got our suits, shorts and t-shirts on and grabbed some beach towels. Just as we were done the doorbell rang to announce Janet's arrival with her mom. It turns out her dad had to work so we five got into my SUV and we headed out. It was a nice sunny day as we drove out onto the beach. I parked my SUV above the high tide line and we all piled out and hit the sand. Grace (that's Janet's mom in case you forgot) and I laid out a beach blanket and decided to sit and watch as the girls. I reached around her and began to gently fondle her breast. After a short time, I gently pulled up the hem of her nightie. I slipped my hand down to tenderly caress her hairy pussy. I got to the point where I had realized that I needed to slip out of bed and jack off. It was then that things began to radically change. As I turned on my back and gave my dick a few quick strokes, I realized that my mother had reached back and slipped her hand over my hand. I froze in fear as her fingers gripped.