Beach Encounter

My wife Lesley and I recently took a holiday on a Greek island. We are both naturists and always hire a car and look for quiet beaches where we can sunbathe and swim nude. On this day we were in the sea and I suggested going back to a supermarket near where we had parked to buy a ball or frisbee to play as I was a bit bored. Lesley said ok and that she would stay at the beach with the bags. I put on shorts and shirt and said I would be about half an hour. The beach was narrow but long. As I walked an old guy maybe late 60s passed me with a chair and small parasol and I noted he had stopped to settle about 50 metres from Lesley . I carried on to the supermarket. When I returned Lesley was snoozing on her towel and her legs were wide open and her fanny was soaked with pussy juice and cum. The old guy who I passed earlier had moved closer to where we were sunbathing and he had a smile on his face. I sat down next to Lesley and she woke. Somewhat shocked I asked why she was in such a soaking state. She apologised and proceeded to tell me that when I left she was applying oil when the old guy had walked over and asked if she needed her back done. She had said yes thank you and saw he was also nude. She observed that his balls were big and heavy and his cock which was hanging flaccid was around 7 inches long. Although we had both been married before and had sex with others she had never seen a cock like his in real life and she said it dwarfed my 6 inch hard on. She smiled and offered him the oil then lay face down on her towel. The old guy then knelt behind her and proceeded to rub the oil on her back. He then let his hands wander over her bum to her legs and occasionally between her arse crack. Lesley explained that she never agreed to any intimacy but she became very aroused. She then felt his rock hard cock sliding between her ass cheeks which felt amazing.The old guy then went down and licked started her bum rim which she loves. He occasionally shoved his tongue in her anus then without warning or permission he crouched behind her and rammed his full length into her unprotected vagina right up to the stops. She said it must have grown another 2inches when hard and she had gasped as he started to fuck her in long slow strokes. She has never came with my cock alone and always requires clit stimulation to climax but she told me that this was different and his huge cock hit places that no other man had found. After he had fucked hard her for a few minutes she had the most explosive orgasm ever from within her fanny. She had never had an orgasm like this before and she was trembling and her legs tingled With a final long push he flooded her pussy with a huge load of cum.
After a few moments he climbed off and she turned over somewhat ashamed but neither said anything . They never kissed or embraced it was only a fuck. His again flaccid cock was hanging like a pendulum and still dripping cum on her belly. He thanked her and walked away. Still in a state of emotion she had then closed her eyes and it must have only been 10 minutes later when I turned up. She apologised over and over again and I commented that I was jealous however I was so turned on by what she told me I took off my shorts and fucked her right there as the old guy looked on and wanked his huge cock as he watched us. I was fucking in his spunk and I too had a fantastic orgasm. I then went down on her and licked her clean then brought her to a clit orgasm.Later that day she explained how amazing his cock had been and although she loves me would like him to fuck her again. This time I could be there and maybe join in. We returned to the same beach the next day and he was in the same place sunbathing nude but another young couple had our spot. We decided to find another spot the other way but joked about whether the young guy would go to buy a frisbee and the old man would make his move on his girl.