He's interrupted by sirens and sea serpents

K-T was having a great time and wanted above all to delay the discovery of his predicament as much as possible.

He wouldn't admit this to anyone, but he really enjoyed swimming naked. Sure he spent a lot of time and efforts to make sure it didn't happen to him but it was always because of the humiliation accompanying the fact that he was seen doing so. He couldn't even count the number of times where he had lost his swimsuit, got it stolen from him, didn't have one to begin with and ended up swimming in his birthday suit. It felt natural and truly freeing, for as long as no one saw him. This was a particular situation though, he would be naked all the time and the one seeing him right now was the one person he had intended to be naked with during those vacations. These conflicting ideas were running around in his brain, but he tried to ignore them and just enjoy himself.

"Want to climb up with me? It might be a tight fit but I'm sure there's room enough for the two of us." offered Lily. K-T didn't know how she would react to his naked dick, by now fully hard, and this situation completely changed the context of her invitation. He wanted few things more than to cuddle naked with a nearly naked girlfriend. But they had not yet gotten to the point of actually speaking of the exact nature of their relationship and inserting his hard cock uninvited in the middle of their budding relationship could ruin everything.

"I think it's better if I stay in the water for now. We're pretty far from the shore already and with no-one swimming we risk drifting too far. We arrived pretty late, we'll have to go back to the beach soon and I don't want us to be lost at sea on our first day," he explained, trying to come up with a convincing reason not to come up to cradle her perfect body in his arms.

They continued chatting idly, talking about the things that they were going to do during these vacations. This giant adult sized fun zone described by the guide was very promising and they agreed to check it out on the next day. K-T couldn't wait to be surrounded by topless women on trampolines or bouncy castles. As they spoke K-T noticed something. Movement under the surface of the water and if television taught him anything he was about to be eaten by a shark.

Thankfully he crystal clear water quickly let him know that he was at no risk of being devoured. There were two girls underwater, they had some full face diving masks that let their whole face visible, connected to a small oxygen tank strapped on their backs. With some diving weight on a belt and flippers, the only thing they had on that wasn't diving gear was a very tiny g-string. One of them has short green hair (and smaller tits than the other even if they already easily matched Lily's), the other one had long auburn hair and beautiful round cantaloupes on her chest.

K-T had heard that scuba diving was one of the activities that they could have and the gear they used looked cutting edge. He was very tempted to give it a try soon. No, what bothered him was that on the top of each diving mask and in the hands of the green haired lady were what looked very much like underwater cameras. The kind people would use to record their underwater adventure for a vacation video. And all three of them were pointed at a particularly exposed part of his anatomy.

The girls were visibly smiling, also filming Lily's butt which was hanging out in the middle of hole in the buoy. Soon they saw that K-T had noticed them and came to the surface.

"Hey there! Having fun?" said the green haired one after removing her mask.

"Ooh hi! Yes we just arrived. We're having a short dip to relax after the flight. I'm Lily and this is my friend K-T, we're here with some of his family." said Lily, introducing them to the girls.

"I'm Diana and this beauty is my girlfriend Natasha," replied the one that had talked to them.

"Nice to meet you. You make a beautiful couple, how long have you been together?" asked Lily. This question made K-T tick about something. Sure they had not been really far, barely holding hands and chatting on the plane, but she had introduced him as a friend, not a boyfriend. He would have really liked to get this tiny bit of confirmation on her part that her feelings for him were the same as the ones he had for her.

"Going on 4 years now, we've been there for a week already and it's been a lot of fun." explained Diana.

"I see that. Is it the scuba gear lended by the hotel? I have never done some scuba diving, but it looks so awesome. Is it easy to use?" she asked. K-T was relieved to see that she at least was interested in the same activities he was, they wouldn't have to fight about what to do next.

"They are wonderful, super easy to use. You have to take a half hour course to learn the safety aspect the first time and you're ready to go. You have just to be careful about sea serpents while diving." said Natasha. This made K-T worry that there could be dangerous animals underwater, he wondered why no warning were present at the beach.

"Sea serpents? Are they dangerous?" asked Lily.

"The really big ones can hurt a bit, we saw an enormous one before reaching you." added Natasha. It made Lily squirm and raise her butt out of the water, trying to stay fully on the inflatable device. "Wanna see? We got it on camera."

"Show me, I can't believe that they let us swim in snake infested waters…" mumbled Lily. K-T realized too late what it was about and Diana was already showing his friend a video on the waterproof device she used to film him.

"What the…? What kind of joke is that? Why are you showing me some porn with some ridiculous large fake dick in it?" She screamed, not stopping to watch the screen while doing so.

"Wait? You don't know? I thought you were together." replied Diana.

"What are you talking about?"

"We just thought it would be funny to prank you by filming your boyfriend." explained Natasha.

"K-T is not my boyfriend and that can't possibly be him, he's wearing blue swim trunks. Besides, you only see those like that in porn movies and it's obviously fake. My last boyfriend was bigger than the first one and he was barely half that size." She argued. Hearing her deny their budding relationship was breaking K-T's heart and the reminder that she had previous boyfriends with which she went far enough to be able to compare their dick sizes wasn't helping either. K-T knew he was big and some people were impressed when seeing his dick, but it was the first time someone called it fake. Lily was apparently convinced, probably by one of her exes that any dicks bigger than their own were faked for porn.

"Well, good news, bad news. Good news it's real and as big as you see it in videos. Bad news, who am I kidding, good news too, he's swimming completely naked right now. You might want to reconsider this boyfriend/girlfriend thing, Diana is strictly no dick, but I swing both ways and a toy as big as that made is not something you see everyday." said Natasha. K-T was now blushing and really embarrassed.

"K-T! Why are you naked?" screamed Lily.

"I lost my trunks while swimming against the waves and they sank to the bottom of the sea." he explained.

"Why didn't you say anything?"

"We were having a great time and I didn't want to draw attention to it."

"And how was it going to help when we would have gone out to the water? By the way, that doesn't explain why you are hard."

"Easy one sister. He's clearly in love with you and you are floating topless next to him. Fuck, if I had a dick I'd be hard too if I stood next to a topless Natasha," replied Diana.

"Wait, you're in love with me?"

K-T had to come clean. He thought that inviting her here and his attitude during the flight had been clear enough but now thanks to the pair of nosy lesbian sirens he had to explain himself.

"Lily, I have had a crush on you for as long as I have known you. I really wanted to get a chance to be with you and maybe become more than friends with you. It's why I wanted so much for you to come here with us."