"Mom and Grandpa took me and my little sister Cindy to a nude beach in a secluded area where no one was around and when grandpa took his pants off Cindy giggled and whispered did you see how big his wiener is, its bigger than Daddy's. Me and Cindy went swimming and when we finished when we were almost back to Mommy site and we were shocked when we saw Mom's father put his huge wiener in Mom's ass, we could hear Mom protesting and said Daddy I'm not in Junior High any more and Grandpa said you still got a tight asshole Slut and made Mom squeal like a PIG. Me and Cindy hid and spied on them until they finished and Mom was upset and she held a paper towel on her ass and kept replacing it with new ones and she yelled at Grandpa that he was the only one that had ever done that to her and it still hurt and she didn't appreciate him cumming inside her asshole. Cindy asked what they had been doing, I said I would sneak into her bedroom late tonight after everyone is asleep and I will tell her tonight, it is easier to show her"