As the weather has been so hot recently my husband and I decided to visit our local naturist beach to enjoy some naked sunbathing. The beach in question is used by both couples and single males and it is not unusual to see a single male sporting a firm erection while enjoying the view. While I was laying back enjoying the sun, my husband decided to take a short walk among the dunes and as he passed another male laying back in the sun he could not help noticing that the guy had a very large cock and was very erect. My husband said to him "my wife would love to come along and sit astride that" and he replied "she is welcome anytime" My husband said that he would get me to come along in a while so he had better keep himself hard and ready. My husband then came back to me and said "I have just seen a really lovely hard cock for you to enjoy and the guy is waiting for you to come and sit astride him" I immediately started to get excited by the idea and as my husband led me back to where the guy was waiting I got really wet and aroused. When we got back to where he was laying he was still very erect and I was really turned on by the size of his cock. I sat astride him straight away and as I was so wet he slid all the way in. He was obviously very horny and said that he was going to cum quickly. My husband said "don't worry just let it go, she loves the feel of a cock pumping into her" with that he just exploded. The whole encounter was really exciting and we have arranged to meet him again for more of the same. We would love to hear from others who enjoy sexy encounters like this.