I can't believe it happened. But I'm not sorry it did. My son had just graduated high school, and to celebrate I booked us a 2-week vacation at a private resort in the Caribbean! My son's birthday would fall right in the middle of the second week. It was perfect! I didn't realize until it was too late that it was one of those swinger's resorts that allowed public nudity on half the property. It was humiliating! But we had already checked in after a 6 hour flight and I was determined to make the best of it! I couldn't resist embarrassing my son about gawking at the nudist women from our room's window, he was so embarrassed to be at a place like that with his mother. I tried to stay on the "prude" side of the resort. The next day while I was relaxing in the jacuzzi wearing my new swimsuit, my son came up and asked me, "Hey mom, how come you don't at least go topless? Seems like the thing to do here." I said, "Excuse me young man?!?!" He said, "It's not like it matters. People walk around fully nude here like it's normal. Hell I was doing it earlier over on the nude beach. No one seemed to mind. I was just wondering why you didn't." He sat down next to me in the jacuzzi. I had already finished a few mai tais and was feeling kinda brave. So I gave him a look and asked him, "Is that what you want? To see your poor old mother's breasts? And be scarred for life?" He turned bright red and says, "Aww jeez mom. I dunnow. I just thought everyone here was doing it and maybe you might want to do it." I thought, "what the hell, why not? nudity is natural, and it's not like he would ever find his mother attractive anyway, at least not with all these hot young women running around this place. Besides it's almost his birthday, what could it hurt.". I finished my drink, unclasped my bikini top, and let him see his mommy's titties for the first time since he was a baby. I expected him to divert his gaze in horror. But to my surprise he just stared right at my breasts, slack-jawed. He was like, "Wow mom... they're perfect..." I turned so red and covered up with my hands. I told him to go look at the other girls on the nude beach and leave me to my drink, but he says, "none of them are as hot as you mom". I swear my pussy twitched. I was beginning to realize I was alone at this resort with a hot, young 18 year old man full of hormones who if given the chance would even fuck his own mother - me. I tried to ignore that thought. Although I did go topless around the resort a lot more, I figured it didn't matter since my son had already seen his mother's breasts and I may as well get rid of some tan lines. By that weekend he had talked me into going to the nude beach with him. "Come on mom! It will be a lot of fun! We can lay out and tan, they have volleyball, I can introduce you to some friends I made!" He made it sound so normal for a mother and son to be naked together. When we got there and he took off his swim trunks, my god the size of that thing! There's no way he got THAT from his father. I was feeling kind of proud knowing that I had brought such a well-hung young man into the world. You're welcome ladies! So he was naked and I was already topless standing on the sand wearing only my bikini bottoms. I took a deep breath and slid them off, I could really feel the wind blowing down there. Once my bottoms were off I felt so crazy! I was like a college girl again! My son looked my body up and down with that hungry look in his eyes, his gaze moving over my tits, ass, and pussy. "It's official" I thought, "my son's a fucking pervert!" I smirked and thought to myself, "and lucky for him so is his momma". I watched as my son's penis sprung into a throbbing erection almost immediately. I had the biggest smile on my face and said, "are you going to stare at my pussy all day or are we going to go for a swim?" We were so excited we practically frolicked to the water. While we were swimming in the waves he was red as a tomato and blabbering on about, "mom you're so beautiful. your body is gorgeous, this is the best vacation ever, I can't believe this is happening right now" - it was cute seeing a young man get all worked up like that over me. I got a little caught up in the moment, and wrapped my fingers around his cock under the water, looked him straight in the eye, my tits out in broad daylight, and told him, "it's okay baby. whatever happens here stays here. nobody has to know. besides, I can't let these other ladies get to play with this," I squeezed his cock tighter, "before I do. Mommy's got to take care of her little boy after all." I turned around in the water and rubbed the head of his cock against my butt, then I let it go and swam away from him a little. It was so much fun teasing him. We spent the whole day at the beach, and eventually he took me right there on the sand. The first time his cock entered me the look on his face reminded me so much of his father at that age. But this man was so much younger, so much more loving, my nipples were so hard and with each thrust I accepted this incestuous love as I came again and again and again. When he was getting close I told him "Cum in your mom's mouth baby" and he did. I wish he would listen like that whenever I ask him to clean his room! I'll spare you the details of all the fucking we did all over that resort. Save those stories for later. But now that I'm telling you what happened between us, you can't, tell, ANYONE! Promise! Maybe this summer we can all go, and you can bring your son. Trust me, you have no idea what you're missing girl!