My little sister and I at the nude beach.

I didn't like having to babysit my kid sister during our vacation till we came to a nude beach.

We were on a family vacation on St. Maarten Island in the Caribbean. The weather was perfect with mostly clear skies, high temps in the low eighties and light winds. There were a few afternoon showers but they did not last long. Our condo was on the edge of town with a view of the ocean but it was not directly on the beach. Mom and Dad preferred to spend the days around town or relaxing at the condo pool. My sister, Fran and I wanted to spend most of our time at the beach.

On our third day we told Mom and Dad that we were going to the beach and Mom gave us the usual instructions including staying together in the buddy system for safety. She was really saying that I should babysit my kid sister. I didn't like the idea because Fran had just turned fourteen, about three years younger than me and I wanted to meet and hang out with others of my age, hopefully meeting a girl to spend some time with. I bet that you know what was on my mind. I had turned seventeen a couple months before. Rules were rules and I understood why my parents thought the way that they did. At least sometimes they kept Fran with them and let me go on my own.

That day we decided to go for a long walk down the beach. After about a half hour walk we came to a sign. "ORIENT BEACH STARTS IN 200 FEET. FULL NUDITY IS ALLOWED". I took Fran's hand and started to turn her around and go back the other way. She stopped in her tracks. "I want to go there. Let's keep going." I asked her if she knew what a nude beach was. That was a silly question. Of course she said yes. Then I asked her if she really wanted to keep going. Again, the answer was yes. I knew that I really wanted to go on but I was not sure that I should let my little sister go to a nude beach and see all the naked people.

She dragged me past the sign toward the second sign that said Orient Beach starts here. We were not fifty feet past the sign when we saw our first nude couple at the shore. They were in their early twenties and both in great shape. "Wow", we both said almost at the same time. Fran grabbed the beach blanket I was carrying and spread it out on the sand. "Get out of your clothes. We've gotta be nude too", Fran said as she started quickly stripping out of her pink two-piece swimsuit.

I looked at her with some shock but soon we were both standing there naked as the day we were born. I looked at my fourteen-year-old kid sister, and she was not a kid anymore. She had a slim body and no baby fat. Between her legs there was a small amount of pubic hair and her boobs looked like they had graduated from A-cups to B-cups and they had nice firm, erect nipples. She looked at me and my package and said, "Very nice, Big Brother, or should I say very big, nice brother." We left our things on the beach blanket and walked down the beach looking at all the people. We walked side by side but not hand in hand. Every once in a while, one of us would point out some other person to each other with comments like, "I bet she's pregnant” or “Wow, I've never seen a guy with so much hair all over his body."

"I've gotta go potty", my sister said. I told her to go in the water and do it but she said that she had to crap not pee. We looked around and saw a sigh that said 'Toilets' by a path that went away from the shore. We walked up the path and on a smaller side path there were several port-a-potties. She went in and used one. When she came out, we saw a smaller path that looked like it went straighter back to the beach, so we went on that one.

As we walked, the path got smaller and we saw a couple that looked like they were in their early thirties. They were off the side of the path on a patch of grass. He was on his back, and she was down beside him giving him a blowjob. I tried to turn Fran back the other way, but she stood her ground. "Get down Paul. I want to watch them." We both dropped to our knees where we would not be seen as easily.

The woman had her lips over the man's good sized hard tool. She was bobbing her head up and down, taking almost his entire shaft in her mouth on each stroke and she played with his balls with one hand. You could see from the fact that her cheeks were pulled in that she was giving his prick a good sucking while stroking it with her face. I don't know why they call it a blowjob. It should be called a suck job. He was obviously enjoying it. He kept moaning and telling her how good it felt. After a couple minutes he held her head still with most of his cock in her mouth. You could see his hips jerk slightly and his ball sack tighten several times. The woman pulled off of him. Cum was dripping from her mouth as she looked at him smiled and licked her lips. Then they got up and headed back toward the beach. As they passed near where we thought we were hiding, he smiled at us and gave us a thumbs up.

Fran looked at me, "Wow, that was something." I have heard some older girls at school talk about sucking cocks. It was so cool. She saw that I had a big erection. "Can I do that to you, Paul?" I looked her in the eyes, "Have you ever done it before?" "No, but it looks easy enough and I want to try it." She reached out and took my cock in her hand. It felt great to have my little sister holding my firm manhood. She pushed me so that I rolled onto my back and she positioned her head over my prick. She looked at it for a few seconds and then lowered her mouth to it.

On her first try she tried too hard to take all of me into her mouth and gagged hard on it when it touched the back of her mouth. I told her not to try so hard at first, and she got into a good rhythm, only taking about half of my six and a half inches but doing a good job of sucking hard as she ran her lips up and down my shaft. A couple times she scraped me with her teeth but not enough for me to complain about, and a couple times she gagged herself by trying to go to deeper. All in all, she was giving me a great blowjob for her first try. I had only had a couple of other girls suck my cock, but my little sister was doing as good as either of them had and it was her first try.

She brought me to a peak and I told her, "Fran, I'm going to come. FRAN, I'M GOING TO COME!" She didn't stop so I held her head in place and I blew my load in her mouth. I felt my ball sack tighten and my prick swell. My cock pulsed four times. Each time it blasted a shot of my cum into my little sister's mouth. She gagged and coughed, but I held her head till I had stopped and then I let go. She quickly pulled off and started spitting out the little bit she had not swallowed, onto the ground. "You bastard, you squirted your stuff in my mouth." In a sharp tone of voice I replied, "I told you twice that I was getting close and you didn't stop." "I didn't know what you meant." was her reply. She glared at me with a mad look on her face and a line of my cum still hanging from her chin.

We stood up and walked back to the beach. Just as we were getting back to the sand, Fran looked at me and smiled. "I guess it didn't taste that bad and I really enjoyed doing it." We ran down into the ocean for one more swim and to clean off. In the water I put my hand between her legs and pushed a finger up into her pussy. She stepped away and playfully splashed water in my face. I grabbed her from behind, pressed my cock against her ass and grabbed her small tits in my hands. Fran wiggled her ass against me and then broke loose. As she walked back up on the sand, she stuck her tongue out at me while still smiling.

We walked back down the beach, put our suits back on, passed the signs that announced the nude beach and headed to our vacation condo. Along the way I told her, “Next time, I want to lick you between the legs while you are doing it. That’s called doing 69.” She replied, “I would like that. It feels really good when I rub myself down there.”

Mom and Dad greeted us as we walked in. "Well, did you guys have a fun day?" We both answered at the same time, "Yup, we really did."
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0913/0426 by PO469. If you want to see a full list of my other stories, click on my username link at the top of this story. Any photos with my stories are of people who are 18 or older. They were consensually taken and come from my friends or from websites that states that its purpose is sharing adult photos and gifs. Photo credit and thanks to imagefap.com and wetgif.com. If you claim copyright to any of these, and want it removed or credited, let me know.