This story is entirely fiction, and all characters involved are assumed to be of legal age.

Tom, Peter, Steve, Robby, and Karli had been friends since high school and had stayed in touch throughout their college years. Whenever they had time off simultaneously, including during semester breaks, they preferred to spend it together. They passed the time playing sports and games, chatting about their future plans, the girls they were currently smitten with, and who the hottest girls on campus were.

That year marked the tenth anniversary of their first time hanging out together, and they had decided to celebrate with a special trip across Europe during the summer holidays. At the moment, they were staying with a female farmer in a remote area of northeastern Germany. The region seemed almost deserted; apart from small villages every few miles or the occasional isolated farmhouse, there was hardly anything there.

Nevertheless, the landscape offered plenty of space and country roads that were perfect for a bicycle tour. Today, they set off on just such a tour, riding used bicycles they had recently discovered and purchased at a small workshop in their holiday town. It was a hot day, and the road was dusty. They were all the more delighted, then, when Steve pointed into the distance at a body of water glittering in the sunlight. Although they hadn't brought any swimwear, skinny-dipping was quite common in Germany, and a cooling dip would certainly do them good on a day like this.

As they drew closer and paused for a moment to enjoy the peaceful sight of the lake, a utility vehicle pulled up beside them. Inside were two local women, slightly older than the five friends. The driver, a woman with strawberry-blonde curls and freckles, leaned out of the vehicle and called over, "Na, Jungs, wo soll's denn hingehen?"

"Um... excuse me, ma'am," said Robby. “We don’t speak German! We’re Americans! Right, guys?” he added, nodding to his friends as if his statement needed confirmation.

“Oh!” said the second woman in the passenger seat, who was tanned and wore her chestnut hair tied back in a ponytail. “In this cas; where are you headed?”

“Just down to the lake, ma’am,” Tom replied. “You aren’t planning to go swimming in Lake Geldings, are you?” she asked.

“Actually, yes, we are,” said Tom. “Is there a problem?”

“Please don’t tell me it’s forbidden!” Karli chimed in.

“Well,” said the woman at the wheel, “not exactly forbidden, but you might not like it there.”

“Why not? It looks really beautiful from a distance!” Steve countered.

“Of course, I’m not your mother,” said the blonde woman. “So it’s not my place to tell you what to do! Just do whatever you want.”

“Anyway, have fun, boys!” the brunette woman called out with a laugh as her friend stepped on the gas. The five friends looked at each other and shrugged.

“What was that all about?” said Karli.

Just fifteen minutes later, they reached the shore of Lake Gelding. The lake was largely overgrown with reeds, but the country road led down a slope directly to a gravel beach that provided access to the water. A few weeping willows leaned over the water, dipping their long, leafy branches into it. It seemed as though no one had been there for a long time, for there was hardly any litter among the gravel or in the undergrowth. However, what caught the five friends' attention was a weathered wooden sign with red lettering in German.

Since Peter was the only one who had thought to install an automatic translation app on his phone for the trip, he took a picture of the sign and read the translation aloud without waiting for the others to ask. "Swimming recommended only for girls and women," he read. "Boys and men are strongly advised to stay away from the water!"

"What the hell!" Robby exclaimed. "That makes absolutely no sense!"

"True," Steve agreed. "Why would it be okay for girls but not for boys? I don't get it!"

"Maybe it's supposed to be a place where girls and women can swim in peace, without being watched or harassed by men?" Karli suggested.

"Don't be ridiculous, man!" Tom said. "This is a public space!"

"Hey, guys! Guys!" Peter called out. "Look! We're not alone!" Everyone’s eyes followed Peter’s finger as he pointed across the lake.

Far out in the water, they spotted milky-white skin and heads with red and blonde hair shimmering in the light. It was a group of three women splashing in the lake, two blondes and a redhead. They were young and obviously naked, for the boys could clearly make out their large, uncovered breasts glistening in the sun. And what breasts they were! Big, round, and firm, straight out of a teenager’s fantasies, with pink or brown nipples. They looked amazingly natural, too. Mesmerized, the boys watched as the girls caressed each other’s breasts, sucked on their nipples, squeezed them, and splashed water at one another.

“Wow!” said Steve. “Check those out!”

“I think I’m in love! Or maybe I’m just horny!” Karli blurted out.

“Look!” cried Tom. “They’re waving at us! They want us to come over!”

Sure enough, the three women were waving in their direction, smiling, and blowing kisses.

“Last one there is a limp-dicked loser!” shouted Peter, hurriedly starting to undress. The others followed suit. Every one of the boys was eager to strip naked and swim over to the bathing beauties as fast as possible. The warning on the sign was all but forgotten.

A desperate scramble for a spot at the ample bosoms ensued. There were only three busty sirens and five sexually aroused men, and none of the guys was in the mood for a threesome involving another man, friend or otherwise. As always when the friends competed in sports, Tom was the fastest. He set his sights directly on the redhead; who waved at him and winked seductively.

Smiling, she spread her arms to welcome him and show off her massive breasts. Tom was so aroused that he didn't even wonder how she managed to keep her upper body above water. Just as he was close enough to touch her, she suddenly submerged.

Confused, Tom began treading water. He looked down to spot the beautiful redhead. There she was! Right beneath him, but there seemed to be a fish there too, a massive creature, far too big for waters like these. Suddenly, her cold, wet fingers touched Tom’s buttocks. She clung tight and dug her sharp nails deep into his tender flesh, pulling his most intimate area closer to her face. "Am I getting an underwater blowjob?" Tom wondered as he felt something gently caress his scrotum.

Then, something suddenly gripped his testicles roughly. A sharp pain shot through his groin, and Tom was yanked violently downward by his balls.

Tom’s head disappeared beneath the surface of the water. With wide, staring eyes, he saw the redhead’s face, contorted into a grimace yet beautiful. Her skin shimmered, covered in countless tiny scales. Her mouth hung wide open, revealing a multitude of needle-sharp teeth, while her long, slender tongue was wrapped around his testicles. Glancing around, he realized the same thing was happening to Peter and Robby.

The creature’s body tapered into a long, tassel-like fish tail. She, or it, was pulling his balls closer and closer to her mouth. As the mermaid clamped her mouth around the base of his scrotum, a fresh wave of pain shot through Tom. But all of a sudden, she let go again. Tom fought his way back to the surface and scrambled toward the shore as if his life depended on it. On his way, he passed Karli and Steve, who were swimming toward them.

Tom was too breathless to speak; it was only the unmistakable panic on his face that prompted his friends to turn back. Robby and Peter had also managed to break free from the grasp of the monstrous beauties and were close behind him. But Karli and Steve were once again too slow and fell behind. When Tom turned to check on them, he could just make out them being pulled underwater; yet his panic was too great for him to help them.

Finally, coughing and gasping for air, he reached the gravel beach and crawled ashore on his hands and knees. Exhausted, he collapsed and struggled for breath. Robby and Peter followed shortly after. And a few minutes later, Karli and Steve also emerged from the lake, no less exhausted and terrified than the others.

“Just look at what’s washed up here!” a woman’s voice announced. “There are five freshly castrated geldings!”

The five friends looked up in confusion. The two local women from earlier were standing at the top of the slope above and their utility vehicle was parked behind them.

“Wh... what do you mean?” Peter asked.

“Just take a look at yourselves!” the brunette laughed. “None of you have your balls anymore! The mermaids of Lake Gelding have gobbled up your manhoods!”

All five jumped up and screamed in shock. Below their penises, exactly where their testicles had once been, there was nothing but a fresh, pink, X-shaped scar.

"What?" "How?" "This can't be happening!" they cried out in confusion.

"Yes, it's true!" the strawberry-blonde woman shouted back. "Your days of fucking are over! You've been castrated! You're geldings, muttons, eunuchs!"

Karli was the first to find his voice again. "W... why? Why didn't you tell us this was going to happen?"

"Oh, we did!" said the brunette. "Well, sort of. We just weren't very specific about it."

"Exactly!" laughed the strawberry-blonde woman. "Why would we have missed out on the pleasure of watching a bunch of stupid young men lose their balls? It's so much fun and never gets old!"

"That... that's not funny!" Robby cried out. "That's cruel!" He was actually crying now, realizing that he would remain a virgin forever. The women just laughed at his misery.

"You’ll get used to it. And on the way back, you’ll have plenty of time to come to terms with the fact that you’re a bunch of limp dicked eunuchs with no balls!"

The mention of the return trip made Tom pay closer attention to his surroundings. "Wait a minute! Where are our bikes and our clothes?"
"Well, we took the liberty of loading everything up," said the brunette, patting the bed of her vehicle. Their bikes were lying there, securely stowed. The five eunuchs stared in disbelief.

"You can't just leave us behind like this!" Steve cried out in desperation. "It’s miles away, and we’re completely naked!"

The women just laughed even louder and got into the car.

"Right!" the strawberry-blonde giggled. "It’s a long way, and we want to make sure everyone knows you don't have any balls anymore!" With that, she started the engine and drove off.

For a while, the five young eunuchs simply hung their heads and covered their now-useless little penises with their hands. Then, they set off on foot.

This is entirely fiction, and all characters involved are assumed to be of legal age.