You, the human, opened your eyes to find yourself standing before a small lavender unicorn. She was naked, while you only wore a pair of white underpants. The unicorn had freakishly large purple eyes. The unicorn in question was looking up at you with a big, broad smile on her face. You didn’t know whether this was real or not. It seemed like a very convincing dream nonetheless. You appear to have found yourself in what appeared to be a library.
The unicorn greeted you by waving her front right foreleg at you. However, your eyes widen in alarm when the unicorn turned around and showed you her plump backside; her tail wagging excitedly from side to side. Her succulent, meaty assets were revealed to you without shame. You saw her pink, small donut-like asshole under her tail, below that you could see the plump nether lips of her pink vagina. And even lower than that, you saw what appeared to be two round, small, teacup sized purple teats with plump, light pink nipples hanging down between her hind legs.
“Hi there. I'm Twilight Sparkle, welcome to Equestria. You must be a human, right?” she said sexfully, looking back at you with bedroom eyes.
“Ummm... yes,” you said, smiling nervously, your eyes shifting from left to right.
“Then why are you still not worshipping my lavender butt?” she said sternly, looking back at you; her eyes narrowing to slits.
“Uh, I just got… here?” you said in a low voice, taking two steps backward away from the crazed unicorn.
“Heresy!” she roared angrily, flaring up her horn with a deep pink glow. A monstrous surge of growth rocked her form; the little unicorn suddenly becoming about the size of an african bush elephant, if not even larger. Her head came to bump against the ceiling, causing dust and debris to fall from it.
Her air ballooning buttcheeks knocked over bookshelves during her growth spurt, sending books flying everywhere. With the rich influx of fat pumping into her ass, her supermassive, mega beach ball like buttcheeks came to clap together with a loud thunderous boom; creating a powerful shockwave; sending you hurtling against the wooden wall behind you with a loud bang; which surprisingly didn't hurt. Twilight’s massive asscheeks pushed against the sides of the walls of the room, the soft fat of her cheeks conceding back deeply like soft pizza dough against them.
“Now you have to worship my big fat lavender unicorn butt at this size!” she roared.
“Uh… can we at least have dinner first?” you said, nervously; giving her a sheepish smile.
The dimensions of the library expanded in all directions, before Twilight blasted upward again in growth; instantly doubling in size. You now had to deal with a unicorn that might as well be at least 26 feet tall; considering that an elephant is about 13 feet.
“Puny human, I’ll just keep getting bigger and bigger without stop until you say yes. I used my unicorn powers to put my library inside a pocket universe. So, I can keep growing and growing! I am punishing you for your heresy!”
You didn’t know whether to be terrified or turned on. This giant horse was sexy. You did have a thing for giant women… but not giant horses.
“Well?” she said harshly, slowly inching upward, gradually growing as if she was mildly angry.
Your eyes drifted over to an archway on the right, you attempted to flee; rushing toward it. However, you only managed to take a few steps before you were hit with an avalanche of purple pony ass, slamming you against the wall.
“You cannot escape! Puny human! You will worship my big fat pony ass!”
The bubbly softness of Twilight’s massive ass pushed you against the wall; the squishy, soft fat of her ass folded around you like soft pizza dough. Her lovely ass smelled of lavender. However, you hissed in pain from the incredible weight of Twilight's ass bearing down on you. Your world became trapped in darkness, with Twilight’s ass becoming the entirety of it.
However, you soon could see by a third-person perspective. You could see Twilight was glaring back at her own ass angrily with her horn glowing. You could see that she was growing larger and larger by the second; her succulent asscheeks air ballooning out from behind her with her ass pinning you against the wall.
“I am the Harbinger of your integration into Equestria! You cannot resist my big fat pony butt, puny human! You will be indoctrinated into worshipping big fat pony ass!” she boomed in a deep voice.
You uttered a muffled grunt into her ass in objection. You could not speak, since your face was stuff with big fat growing horse ass.
Twilight growled angrily, subsequently you were hit with a monsoon of fat pony ass as Twilight’s body was rocked with a massive explosion of growth. You hissed in pain from the impact of her ass slamming into you. You could hear the thunderous clap of her buttcheeks smacking together with loud meaty slapping sounds of flesh, slapping against flesh due to the rich influx of fat pumping into her ass. Her massive ass jiggled about like a stormy ocean as more and more fat pumped into it. Bigger and bigger, fatter and fatter, heavier and heavier her butt became from your rejection of her butt. Each cheek of her ass alone at this point might as well be a school bus, which is like six elephants.
“Why, you insolent little worm! You resist against the power of big fat pony butt?! How dare you defy my big fat pony butt!”
Twilight growled angrily, grinding her massive (and growing) ass back and forth against you. From a third-person perspective, you could see Twilight legs stretching out across the room, her head raising higher and higher into the air; her asscheeks air ballooning outward from behind her as they pushed you against the wall. You could also hear her massive buttcheeks clapping together during her movements, with loud meaty slapping sounds of flesh, slapping against flesh.
Her horn lit up with a deep pink glow, you then felt a warm glow around your underpants. Forthwith, your underpants lowered down to around your ankles. Your erection came to poke against her lovely, soft rump.
You could only utter an incomprehensible, groan into her ass.
She pulled her ass back slightly, to allow you to speak. “What was that?”
“Okay… Twilight. I will worship your ass!”
There came a blinding flash; and the next thing you knew, you found yourself being hugged by a normal-sized, four feet tall-ish Twilight. Her soft, spongy feeling hooves touching off your lower back.
“Welcome to Equestria. Sorry, Anon. I do no butting around. I do hope we can be friends.”
You smiled at her nervously. “Yes. Twilight, I’ll be your friend.”
She made a sound like a squeaking dog’s chew toy in happiness. “Awesome! Let’s go read a book together before we get to the butt stuff.”
You simply nodded. At long last, you had submitted to big fat pony ass.
End
