Your mind is in a haze of weird sensations, feeling your now squishy and wet "skin" around your body, tasting your rank and foul "breath" while your body finishes changing. A quick look at the bathroom stall confirms what you should have feared...but can't help feel strangely excited by upon seeing it. A 7 foot tall and vaguely lycanthrope shaped figure stares back at you....made entirely of various shades of brown/green waste, fresh and steaming constantly while your mouth hangs agape in awe and a thick log of solid shit hangs where your cock once was...dribbling brown gunk onto the already filthy floor. Part of you wants to cry..knowing your humanity was shattered and you will never again be able to return home, but why would you want to? Urges fill your body....you taste the rancid taste from before...it's all you'll ever taste from now on and all you'll ever crave, this is what you wanted deep down..accept your new self and give in, enjoy it.
Other hulking monstrous creatures in the bathroom stall stare you down, their piercing eyes filled with various bestial sensations...lust...hunger? Whatever they wanted you get the feeling they were going to get it, slowly encircling you while your werewolf friend from before pushes you down onto your knees in front of the menagerie of horny beasts.
"There we go, do you feel better now? You were a lowly human before...now like this you're at least of some use to us!"
You feel his hands grip your squishy buttocks and before you know it a thick canine dick begins penetrating what would be your ass...except there's no resistance at all. Your new friend's girth rams right into your new body with ease while you feel the sensation of getting fucked as a living pile of waste for the first time, the steaming shit smell rising off of your body even faster now while you let out a perverse brown drool and the other monsters get closer. You should be scared but...you want this, you NEED this even. Your friend behind you starts to ram into you faster, little flecks of shit spattering off your body while your knees and hands squish into the floor and you struggle to even remember what it was like to be human. A particularly fat boar monster is standing right in front of you now, pulling his pants down like your friend before and spreading a truly rancid ass right in front of your face while he groans and squeals. A torrent of dark brown waste floods out of him and onto you...some hitting your gaping mouth and adding to the foulness on your "tongue" most of it just piling up onto your head while he lets go with reckless abandon and submerges the front half of you in days worth of pent up waste, but again...you don't fight at all....feeling similar sensations and hearing more groans around you while the rest of the bathroom stall follows suit and buries your body underneath their leavings, all the while your perverse friend from before continues to plow you, unabashed by the spectacle taking place before him. At this point your arms and knees are buried, your "face" is covered in pig scat, and your "ass" still feels the sensation of being pounded while a thick werewolf knot fills up inside of it. "This is crazy...." you think, feeling your porous body grow larger somehow as the waste from the menagerie of monsters entering and leaving the stall just adds to what's already there, each time someone enters and sees you on the floor they simply opt to use you instead of the stall, adding to your growing body while your form becomes more bulbous and unrecognizable...a pile with an "ass" at this point.
"I hope you enjoy your new life here "friend"...hahaha...I know I w-will...a-awooo!!"
You feel his knot explode inside of you while your "innards" are pushed and filled to the brim with his seed, barely able to think while your eyes open up again and you feel your already strange body dragging the ground now, much heavier than before. Before you're able to question it though your friend is in front of you now...his shit covered dick still dribbling....like a throbbing turd between his legs, it was the most enticing thing you had seen all night...and before you knew it you got exactly what you wanted.
"This is your home now, your life...cleaning the bathroom stalls was such a hassle anyway, the humans call us monsters and beasts...why use human inventions like those silly toilets then? You'll make a fine replacement"
You hear his words and feel your "heart" flutter with anticipation...the thought of being used endlessly rushing through your mind while a solid arm of shit protrudes from the now formless body below your "head" and grabs his cock to deepthroat it better. This your purpose now, your human shell discarded forever as your filthy urges became reality....everything you tried to regress laid bare as a "monster" like the rest of the creatures you had seen this night. Any sane person would have dreaded what you had become...but you only looked forward to the next person who would walk through those bathroom doors that night.