Melanie enters the bathroom of a small, rather remote dollar store. She's been on the road all day and desperately needs to relieve herself.
The bathroom is small but fairly clean all things considered. The toilet is nothing extraordinary as far as Melanie can tell, though a note on it reads "Please flush before getting up -Management".
It's an odd request, but Melanie doesn't question it. Her tail curls up around her waist as she sits down, and she lets out a load of waste.
PFFBRLRRBLFT PLOP
When she's done, she goes to grab the toilet paper and wipes herself clean. Her bathroom trip is entirely ordinary. Then she goes to flush.
FLLSHHSHHRLLLLSHHH
Earlier that day, the final rigging had been set up. It was a simple ploy for the store owner, a small side hustle. All he had done to the toilet was replace the inner workings of the comode with those of a high-end toilet built for preds to dump their prey in, then slap on the sign. It was a simple plan, but it meant that now...
Melanie's waste disappears instantaneously down the plumbing, but the toilet waters continue to swirl violently. A bit of suction on its part slurps her tail from where it sat at the side of the bowl right down into it, squeezing it through under her thigh.
"Agh- Wha-"
With her tail being yanked forcefully down the pipe, her rear end is easily forced into the bowl, which stretches just enough to fit her, the porcelain giving way enough to make it go from not fitting at all to a crushingly tight squeeze.
"HELP! SOMEONE-"
SLLLRRLLSHLLLSHHHHHHH
Her tail is well and truly lost in the plumbing by now, and her ass starts to go the same way. In another instant, she's pulled deeper in, forced into quite an awkward and frankly embarrassing position, her legs squeezed together and pointed straight up in the air, her body folded in two.
The relentless toilet stretches out more and more to fit her in, never stretching farther than it needs to, never getting loose enough that Melanie doesn't feel like she's about to be crushed in it. She's pulled in until only her head, arms, and knees stick out. It's been only a couple seconds since she first pulled the handle, and the toilet is already making quick work of her.
RLLSHHHSLLRSHHHHHHHH
With the bulk of her already inside, the rest of her body goes quickly down the shitter, her head disappearing, then her legs, then her still-flailing arms. The entire flush took only a few short seconds.
FLLlSSHLRLLSRLLSHHHSHHHHHHHH GLURRRSHKRGLLLL
The toilet returns to its previous shape as if nothing had even happened. In the narrow pipes running beneath the building, a helpless Melanie is carried away, a thick bulge forming and moving along the plumbing as she goes.
The bathroom is left empty, aside from a hidden camera set up against the wall facing the toilet. At the end of the day, the camera is collected, and the video feed is uploaded online at a small pay-per-view fee. It makes around 83 bucks before newer videos clutter the front page of the niche underground porn site, and by that point it's spread through screen-recorded copies to thousands of people. Some save it to enjoy again and again, some look at it once and move on, and some only see it when their creepy friends send it to them as gross-out content.
Regardless, that video clip is most of what will remain of Melanie. There will be no body to bury, for it's buried in the pipes, and there will be no chance for her to pursue any of her dreams, her future flushed away.
Deep in a tight sewer pipe buried under the middle of nowhere, Melanie flails and gasps for breath. The thought crosses her mind that this is where she dies, and the realization only serves to make her panic more. In the unlikely event that her body is ever found, she'd look no different than the remains of some poor digested prey by the time that happened, just a skeleton caked in sewage.