Larry was waiting a good while for this. A class-wide trip to a waterpark. No school, just swimming and games all day. His senior year culminating up to this. He was so ready.

After a brief introduction, a rush into the changing room, then off to a day of fun. Almost everyone from his class was here. He looked around. Ron, his good friend. Steeve, the weird kid. Then he's noticed Jessica and Caroline. It's the first time he saw the two in swimwear and he wasn't at all prepared for what he witnessed - Jessica, the sporty girl with a naturally great ass, wearing a tight one-piece swimsuit, and Caroline, the well-organized, secretive girl, that would grab every boy's attention with probably the biggest boobs in school, extra impressive for her age, wearing a pretty skimpy bikini. He quickly descended into water to hide his rapidly rising boner. Trying not to succumb to his teenage hormones, he went to his friend group, seeing as they were starting a foam sword fight ring.

After a lot of shennanigans, he got a bit tired, so he sat down to rest.

"Larry" he heard suddenly, confused. A girl's voice. Caroline?! "I see you've exterted yourself. Had a lot of fun, huh?"

The two girls sat by his both sides. Still confused, he just mumbled "Y-yeh."

"I imagine you've tried a lot of things here. Want to show us what's the most fun?"

"Sure! I think, that spinny slide over there, really cool, makes your head all fuzzy."

"Sounds like I'm into it" said Jessica. "Let's go!"

The girls stood up, giving him a moment to look at their asses up close, before he also stood up. He knew, that once home, this will be something he'll masturbate to for ages. They climbed up the steep staircase to the top of the slide, Jessica first, then Larry, then Caroline. Each time he took a quick glance up, Jessica's majestic ass was there, swaying, jiggling a little, making him near unconscious out of sheer raunchiness. Eventually he's also noticed a bit of a cameltoe going on, her pussy outlined before his eyes.

Once on top, she got into the slide, but not without first bending over really low. A moment after, the slide's inside reverberated with high shreeks of enjoyment. Larry soon followed. Then, when he landed, Caroline stumbled onto him upon landing. For a brief moment, he felt her embrace him in panic, her boobs squashed againt his back. Then she regained her balance.

"Wanna see our favourite place?" asked Jessica.

"Sure!"

He was lead by them under a multi-layered waterfall. There was a bench in the back.

"It's really relaxing in here. Sit down, try it."

He sat down, the girls once again sat by his sides. Yeah, he thought, it's pretty chill in here but I don't think it's worth the hype.

And then, he felt a hand on his cock. Caroline. Stroking it gently.

"Feeling relaxed yet?"

Jessica undressed Caroline of her bra, her boobs now squishing a bit with every movement of her arm. She pulled his cock outside for direct contact. Jessica sat by again. She directed his hand to grab her ass, then bent forward and started slowly sucking his dick. This was beyond heaven. The sensory overload made him cum in an instant. The girls laughed.

"As much of a man in his body as he is in his mind" commented Caroline. Larry was too dazed to understand. All he understood was the feeling of being jerked off again. This time by Jessica's hand. Seeing him lose his senses made them laugh again.

"He doesn't even understand."

"Pain will sober him up" replied Jessica, placing her other hand on his balls. Slowly constricting. Starting to feel pain, he did indeed realize something's not right.

"Listen careful little boy - we saw exactly how horny you were when we entered here. So we decided to give you a spin. And what do we find? Disappointment after disappointment. You can't carry an interesting conversation for shit. Your dick is tiny, and you can't last a minute on top of that. Were you more of a man, you could be fucking us both, because you actually have nice looks. But after today's display, you won't fuck anyone anymore."

"What? What does that mean?" he asked in confusion. Her grip on his balls suddenly tightened.

"That means you're getting castrated."

He could feel on his balls, that she gained a lot of strength doing sports and excercise. The pain became unbearable, he was about to scream but Caroline quickly covered his face with her boobs tightly, starting to suffocate him instead, his scream being muffled and unhearable by anyone outside the noisy waterfall. Jessica's right hand stopped jerking him off, and joined her left instead, forming an ironic nutcracker. Feeling two points of pressure on his balls, he sqealed and thrashed, but all was muffled and unnoticed. Suddenly, he felt something give. Jessica felt it too.

"There, your balls are now useless mush, as they should be. Caroline, wanna make sure he's sterile?"

"Almost lost hope you'd ask!" She turned to him. "No need to scream now. Your balls are already gone. All you'll accomplish is humiliating yourself further."

All he felt is total defeat. The two girls could kill him for all he cared, he just didn't have the strength to fight. Caroline started brutally rearranging the remains of his destroyed balls, causing him agony. She was topless right in front of him, boobs jiggling as she played around, but he couldn't enjoy that anymore.

After a few moments, they giggled at him and walked away. He sat there motionless, with a lot of thinking to do. And later, a lot of explaining.