Allison's Education, Part 14 - Volume

Allison's Education, Part 14 - Volume

Story by All These Roadworks (2025).

Author's Note: Every chapter of "Allison's Education" will come to CHYOA in time - but you can skip ahead (and support its creation) by buying the premium e-book right now at AllTheseRoadworks.com for only $7.99 USD! (Click here to view in store.)

Also - my kinks aren't my politics. Please support positive, enthusiastic consent, and check out my content policy for more on how I engage with gender-degradation kinks in ethical ways. (Click here to view.)

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Allison still remembered with embarrassment how the boys in her math class had been encouraged to measure the volume of her large tits.

But she found that her math teacher, Miss Sophie, was not entirely done with the concept of volume.

“Today, I want boys to pair off with girls, and I want each pair to come up with their own experiment for measuring volume,” said Miss Sophie. “The boys have the final say on what the experiment will be.”

David declared himself to be Allison’s partner, and looked at her with obvious lust. “Well, we’ve measured your tits,” he said. “I think we should measure your… other bits.”

Allison begged him for mercy with her eyes. “Please, no,” she said. “Please…”

But David had settled on his idea. “We’re going to find the volume of your cunt,” he declared.

He led her outside into the schoolyard, and had her stand in a wide bucket.

“You might want to remove your skirt to stop it getting wet,” he suggested.

“Please, no,” begged Allison, but David threatened to get Miss Sophie involved, and – knowing that that would result in the whole class actively staring at her – Allison gave in, and reluctantly stripped off her skirt before David’s lustful gaze, leaving her bare-cunted and bare-assed on the school lawn.

David had procured a rubber balloon from school supplies, and he now stepped forward and probed at Allison’s wet cunt, pushing the balloon up inside her, with its nozzle poking out from between her pussy lips. Allison moaned in humiliation.

Then David took one of the gardening hoses attached to the side of the school building, and pushed the nozzle into the mouth of the balloon. Allison could feel in intruding into her cunt.

Then, slowly, David turned the tap, allowing a small flow of water to run from the hose.

Allison moaned as she felt the balloon begin to inflate with water inside her fuckhole. It quickly grew to the size of a small cock, then inflated further, making her feel at first uncomfortably full, and then increasingly stretched.

“Stop,” she begged. “It feels weird.”

“It’s still smaller than a baby,” said David, “and you can fit a baby through there.”

The balloon grew bigger and bigger. Allison had never felt so full. She had to spread her legs further for comfort. Her cunt felt stretched. She could even see a small bulge on her lower belly.

And then, just as it was about to be too much, the balloon burst inside her. She squealed at the sudden snap, then moaned as the water flooded out of her twat and into the bucket.

Miss Sophie took a photo of her as the water leaked from her exposed cunt into the bucket, and when the water in the bucket was measured, she put that photo up on the wall of the classroom next to the tit size chart, with a piece of cardboard noting Allison’s final cunt volume, and gave Allison a copy to take home with her.

Allison’s parents were delighted to see it that night, and put the photo up on the fridge next to Allison’s “large udders” certificate. They didn’t think to ask how the measurements had been taken of a pussy that was supposed to be locked.

Allison, however, had homework to do that night – special homework, just for her, that Miss Sophie had set her.

“Given our estimation of your cunt volume, you are to find the average volume of a male ejaculation, and work out how many men would have to cum inside you to completely fill your fuckhole with semen…”

(TO BE CONTINUED)