A somewhat damp pile of parchment was held in your five digit, right hand. You, the human dressed in a fine black tuxedo walked past rows of bookshelves towards your intended destination within this big ass library.
And that destination was the couch, made of a very fine purple leather. You don’t know if you should be worried about that, considering what the dominant species of this planet is. Lying lazily upon the couch was Princess Twilight Sparkle, who needs no introduction. By the way, you are Anon.
“I brought my Daring Do fan fiction!” you exclaimed excitedly.
“Oh goody! Give us a read Anon!”
With a flick of her magic, the parchment was pulled out of your hand. She levitated the parchment to herself and subsequently began to read.
Silently she read your story. A big smile was upon your face and hers as she continued to read.
However, her excitement began to wane rather quickly. A look of frustration came upon her face. Nonetheless, she kept on reading despite how much it was making her angry.
A sad frown came upon your face.
‘Why did I think this was a good idea?’ screamed your thoughts.
When she finally finished the story she was staring at you with narrowed, angry eyes.
“Hey come on, it couldn't been that bad?”
“Anon… that was the worst fan fiction I ever read.” she said bitterly, in a low voice.
You crossed your arms. “Yeah well, this was my best story!”
“Anon, your story is full of broken sentences, virtually zero grammar, has no plot, other than gigantic butts and growing butts, and Daring Do, with a dick having sex with mountain sized ponies. Also I really didn’t need to read the part where you changed Daring Do’s gender, and where he gets giant futa mare dicks inside him. "
“It’s not gay if she has a penis!” you shouted.
“Whatever Anon. Promise me you will never show this to Daring Do.”
You growled angrily. “Oh yeah! Rainbow Dash liked it!”
“Well, Rainbow Dash has very low standards. Or you’re lying.” she said, eyeing you suspiciously with narrowed eyes.
You sighed deeply. “You’re right. She said it sucked.”
“Why did you write this abomination?”
You looked down at the floor, sighing deeply. “I’m lonely, Twilight. That’s why I write these ridiculous sex stories. I mean, who would ever love a big ugly ape.”
“Don’t put yourself down. I’m sure you’ll find love one day.” she said softly, folding a wing over you.
'And then they kissed!' came a mysterious, feminine voice out of nowhere.
With that Twilight lunged forward, wrapping her hooves around your neck, proceeding from there to metaphorically kiss your face off.
“Hmm?!” you said in alarm, before giving into her soft, slightly fuzzy lips kissing yours. “Mmm!”
You raised your arms, bringing your left hand down to her neck, in order to lovingly stroke her silky soft mane. The other down to her plump rump, sinking your fingers into the soft fat of her backside.
For a long time, the two of you exchanged tender intimacy between human and pony.
Eventually, you two parted lips, a strand of saliva was connecting both your lips as you moved apart.
“I guess my life really is a fan fiction.” you said softly, lovingly rubbing her cheek.
“It must be. For I’m going to fulfill your fantasy.” she said sexfully, giving you bedroom eyes.
Twilight Sparkle gave you a nasty grin, making to stand up over you, as she lit up her horn with lavender light.
Your eyes widened in alarm upon the sight of a long and thick, fat purple horse-cock sprouting out between her legs with a pair of basketball sized balls. Your own cock coming nowhere near the size of hers.
“Uhhh, Twilight. Please summon away the penis.” you said nervously, eyeing her huge cock with a mix of envy and fear.
“Wh-what?” she said, sounding hurt.
“I don’t like penis Twilight.”
“You fucking gay faggot Anon!” she shouted.
With an angry growl she dispelled her dick away with a flick of magic.
“I’m sorry Twilight. But I don’t like penis.”
Twilight plopped down onto her rump next to you, crossing her hooves. “Then why would you write a story about a male getting fucked by dick mares?!” she shouted.
“I don’t know, it’s hot. It’s hot when on paper, but not hot with it’s off paper.”
“That doesn’t make any sense!”
“Fetishes don’t have to make sense!” you shouted defensively.
“You have been a bad human! Now, it’s time to be punished!” she shouted.
With that Twilight stood up, giving you an angry glare.
“Know the power of pony puny human!” she roared.
You tried to get up to defend yourself. But you found yourself unable to move.
“Now, you will know the power of pony butt!” she shouted, turning around, presenting you her plump rear end.
Her horn glowed with lavender light for a brief moment, before she began to grow an inch higher into the air by each passing second.
Her overall features began to expand as she grew taller, her rump in particular seemed to receive the strongest augmentation of growth. Her legs rapidly grew thicker to help support her quickly swelling rear end.
You stared both aroused and terrified at Twilight’s growing backside. Up and up she rose, soon she reached Celestia's mighty size, quickly surpassing that to grow even larger.
“Okay, that ass is big enough!”
”Heresy!” she shouted, her horn glowed even brighter.
The room disappeared, you found yourself in an empty void of space. There was just you sitting on the couch, and a huge ass Twilight standing on an invisible floor before you.
“UNLIMITED POWERRRRAAAAAA!” she roared.
At what sounded like an explosion going off a shock wave of energy blasted off her body, before she began to expand faster than ever before. Twilight’s body raced across the universe, adding quadrillions of tons of extra weight onto her body per second.
Twilight became a sun sized pony, not to long after she became a solar system size pony.
“Twilight! You're too big!” you shouted.
With an angry growl her growth intensified even more, and she became a galaxy sized pony.
Twilight continued to grow and grow, by your perspective all you could see was an astronomical size mass of purple that you couldn't see the end of, because it had long since grown so large beyond what the human eye could see.
Several hours later, Twilight, who you have assumed has grown to incomprehensible size finally spoke.
“It’s time for your punishment!” she spoke telepathically in your head with a nasty tone.
You screamed as a giant wall of purple came closing in fast.
“Please, Twilight! Don’t kill me! I’m sorry!” you shouted.
She ignored your protests, continuing to lower her vast mass of purple down upon you.
You screamed in terror as a mighty pony butt of incomprehensible size and weight came slamming down upon you. However, rather than be turned into bloody jelly, you found yourself still alive in the darkness under her cosmic rump.
“Get to worshiping puny human. Or I'll turn off the weight protection.” she shouted.
You immediately went to work. Knowing your own fan fictions, you didn’t want to make a giant pony angry. Or at least, you would have had there not come a blinding flash of light.
With a flash, both you and… a normal sized Twilight ended up back on the couch sitting next to each other.
“Cadence! Stop using mind control magic on me!” she shouted.
“I didn’t use mind control. I just increased your passion for Anon.” Cadence’s voice shouted defensively.
“Begone! I’ll go have sex with Anon on my own terms!”
Cadence sighed sadly.
A long awkward silence ensued.
“So, uhhhh, want to continue where we left off?” you spoke nervously.
“Yes. But as a little pony. Not a giant pony.”
“It’s a deal.”
With that you had sex with a somewhat normal, not too crazy alicorn. No giant butts or giant dicks at all.
The End
