When I was 25, it was a very hot summer evening, my then girlfriend, Jill, were on the way home from a party night. We drove along the coast where we stopped at a secluded beach in South City Beach. It is only accessible to the water via a short walkway through the sand dunes to a long-deserted beach area. It was a full moon that night as we proceeded to have a skinny dip, the water was cold so we warmed each other by kissing and playing with wandering hands where one thing lead to another. Before I knew it, I was on my back on our beach towels, where Jill then mounted me. Together, we were enjoying the moment, we were frenzy fucking to keep warm, then it was a short time after we reversed positions and finishing in missionary. I was about the cum, so withdraw, stood up in front of Jill where she proceeded to wank me and finish with a BJ. It was then, I realised we were being watched. Shit, there was a couple sitting up higher on the beach that had been watching us since we first arrived. Jill don’t know and keep going as they walked down closer to us when I noticed they were in the mid-fifties. Jesus, I thought, we are in deep shit now, caught in the act by some locals and now in trouble. They stopped about least six feet away, and the husband then said to his wife, “The things you see on the beach. Would you like to try that?”... It was then Jill realized they were there and stood up, embarrassed. Then it happened, the man’s wife handed him their little dog and said, “Yes I would”. Took four steps grabbed my very erect penis with her hand, the other she placed around Jill’s neck, pulled her closer and kissed her. Said softly “you are a very bad girl”, while stroking my member. “I won’t tell anyone if you let me finish him off,” Then dropped to her knees and slipped my cock in her mouth, Jesus. She licked and sucked me for several minutes before I cum in her mouth, I almost blew the back of her head off. All the time both just looked on, the husband was looking and watching with Jill standing there dazed and in shock. Once I had cum in her mouth, she actually swallowed the lot and then stood up, said “Thank you but next time fuck further down the beach”. As they walked away off into the dark, we heard him say, “Happy now dear, wait until I get you home, I am going fuck you until you beg forgiveness”. Jill and l looked at each, sat down on the towel stunned, then burst in to laughter, not believing what had happened. We had got dressed and raced home even more horny.