A few days ago I decided to go to the local secret nude beach. I go a few times each summer instead of going to work to chill out. My wife doesn’t know that I do this. This time I parked on the street walked down to the beach and got undressed right away. Since it was very hot that I got in the water right away. I swam around, talked to a few people then went back up to lay on my towel. When coming out of the water my sister in law was walking toward the beach. I was still in the water with it above my waist and didn’t know what to do. I decided to just get out and try to explain, I walked right up to her and she had a big grin on her face. She said the water must be cold and started laughing. I couple of girls there told her I gets a lot bigger. They had seen me there a few times. I asked her to go sit down and talk, to try to convince her not to tell my wife. So we sat, I started to get dressed and she said I had to stay naked or she would tell her. She made me a deal, she said she would keep it a secret but from now on I would have to be naked for her anytime she asked. She also told me she needed to see it bigger. She told me this was the first time she saw a naked man, and she wanted to see the difference. I was nervous but I told her we should go back behind gmthe trees. We went back there and I started playing with it to get it hard. She asked to touch it and I let her. She then asked if I saw her naked would it half. I said probably so she removed her clothes. I was hard almost instantly. She touched again and then said she wanted to go get in, so we did, then spent the day tote tent naked .