While my wife and I were on vacation, we decided to go on a private boat ride. It was just us and the captain, he was a young guy and in great shape. As soon as we got on the boat, I could tell my wife thought he was hot. He took us out and anchored the boat at a sand bar. He told us no one comes out her and we can skinny dip if we wanted. We had a few drinks and my wife wanted to try it, so we did. I had no idea that the captain was going to join us. After my wife and I gto naked, we got in the water and fooled around a little. Then I notice my wife looking over a the boat. The captain, was stripping down. He pulled off his shirt and then he looked at my wife and dropped his shorts. Her jaw dropped when she saw his cock. He was HUGE, at least 10" and very thick. He got in the water and came over to us. We were out of the water and laying on the sand bar. He walked over and my wife could not take her eyes off his big cock. He sat down next to my wife and he big dick sat there, just inches from her. He sexy body exposed to him. He complimented her and told her she was goregous. She blushed and smiled. He asked her if she wanted to go for a swim. They got up and went into the water about waist deep. He went over to her and whipsered something in her ear. She looked at him and her hands disappeared under the water. She was stroking his big cock. Then his hands went to her tight ass and down to her wet pussy. He slide his finger in her pussy and gave her a deep kiss. They went back to the boat and I followed them. When I got there, she was on her knees sucking his big cock, while he played with her big tits. I watched as they fooled around, then he sat her on the seat and spread her legs. He rubbed the head of his massive cock on her pussy and slowly slid inside her. Once he was inside her, he started fucking her harder and harder. I could not believe what was happening, I was watching this stud pound my wife's tight pussy. He bent her over and fucked her from behind. Then about 10 minutes later, he put her on her knees and made her suck him off until he came all over her face and tits. After they were finished fucking, he pulled up the anchor and we headed back to shore. My wife stayed with him and sucked his cock as we drove back, letting him cum down her throat. When we got back, he gave her his number. Later that night, she called him and went to his place and fucked him all night.