Late at night, you the human were out in the streets of Ponyville walking with your pony friend Pinkie Pie. The faint lights of flickering fireplaces in nearby cottage houses, along with the lavender night sky with the stars and moon were the only source of light. A thick coating of snow covered the streets around you. You could hear ponies singing Heartwarming’s Eve carols in their houses.
You were dressed in a heavy black winter coat and thick baggy trousers and had thick black gloves covering your hands.
Pinkie Pie, on the other hand, was naked, who didn't seem bothered in the least by the cold. She was quite a thick mare, her ass was especially thick. She was one of the thickest ponies you knew. While at the same time not morbidly obese. Her butt was perfectly smooth in shape, and was not saggy in the least.
“Hey Pinkie, you want to make a snowman?”
“Sure Anony! I love to make a snowman with you.” she said excitedly, clapping her hooves together.
You reached down to take a chunk of snow into your hand. You shivered, dropping the snow.
Noticing this, Pinkie walked up to you and stood on her back hind legs, and gave you a hug. You returned this hug with gusto, wrapping your arms around her.
“Anony, you can’t seem to handle the cold like me. Are you sure you don’t want to just go home?”
“Yeah, I think you may be right. I guess I’ll see you tomorrow.”
Pinkie leaned over to your ear and whispered softly. “How about you come home with me for some just friends’ cuddles?”
You answered her by gently stroking the back of her mane. Pinkie Pie sighed happily, and then leaned over and kissed your cheek.
You smiled and kissed her cheek back in return. She then took hold of your hand, cupping it with her extremely flexible hoof, and began to gently prompt you to follow her. You did not resist and allowed yourself to be guided while holding hand and hoof together.
With the absence of street lights, this place was hard to navigate for you at night. Pinkie Pie seemed to be able to see in the dark very well. Soon enough, you arrived at your destination in front of a large gingerbread house.
Pinkie Pie let go of your hand and trotted toward the door and opened it for you.
Without a word, you made your way inside, Pinkie Pie soon followed and closed the door after her. The normally extremely busy coffee shop/bakery was dead silent. But on the plus side, you were sheltered from the cold outside.
The two of you discreetly made your way upstairs. Nonetheless, you could hear the quiet clop of Pinkie’s hooves behind you.
Once upstairs, you made your way into the bathroom to take care of business. You were thankful Pinkie Pie did not follow you into the bathroom. Once you were done, you went into her bedroom, while Pinkie entered the now free bathroom.
The moon and stars were the only sources of light in this room, coming from the window. You could barely make out anything. You stripped yourself down to your underpants and put your clothes into the corner of the room on the right.
With that taken care of, you rushed into her bed and went under her somewhat thin blanket. It was a single bed, but it still should be enough room for the two of you.
You shivered. Her blanket was providing you with inadequate protection from the elements. You pondered on whether to put your clothes back on before you heard the sound of clopping hooves approaching.
Without a word, the mare got into the bed and lay down on your chest, placing her hooves on your shoulders. You wrapped your arms around her and placed them upon her upper back.
You were immediately bombarded with great, soothing waves of heat coming off her body. Pinkie Pie leaned her head to the side of your neck.
You saw her beautiful blue eyes glow in the dark before you. You couldn't really make out any expression on her face, due to the darkness of the room.
“Good night, Anony.” she said softly.
“Good night, Pinkie.” you said tenderly in return.
You saw Pinkie Pie close her eyes. You, in turn, did the same. With your arms on her upper back and her hooves resting on your shoulders, the two of you began the process of drifting off to sleep.
For quite some time nothing eventful happened. You simply basked in the warmth and softness of Pinkie’s body pressed against your bare skin, drowning out the cold. The sheer warmth and softness of her body began to take its toll on you as a certain part of you began to expand at a terrifying rate.
You didn't move, you couldn't move. There was nothing to be done to stop the oncoming events without taking drastic action which could make things even worse. Thus, your erection poked her chest and made her giggle.
“He-he, looks like somehuman is excited.” she said in a happy, giddy voice.
“Uh, sorry Pinkie.” you said nervously.
“Do you want to upgrade this to more than just friends cuddles?” she said in a hot breathy voice.
You answered her question by lowering your hands to her fat rump. You took a tight grip upon her ass, sinking in a good few inches into her soft, plush rear.
You felt Pinkie Pie press her soft, plump lips against yours. You granted her access and allowed her large, equine tongue to enter your mouth.
You and Pinkie Pie moaned in bliss as your tongues danced together. She was gentle, despite her tongue being much larger than your own. As you kissed Pinkie Pie you fondled her ass with great enthusiasm.
You roamed your hands over her rump, basking in the lovely softness and warmth of it. Her marehood dripped profusely onto your cock, lubricating it well.
You pulled your hand back and gave her ass a hard slap.
Pinkie uttered a low, muffled moan whilst she kissed you. Her buttcheek came to smack against the other one with a delightful sound of flesh slapping against flesh.
You were taken aback when Pinkie abruptly pulled away from you. Before you could protest you felt her shift over from under the blanket. Your face was now hit by the strong scent of sweets and powerful waves of heat from her marehood.
The mare gently rested her hooves on your sides and then pushed her ass backward onto your face. Your head became smothered in the warmth of Pinkie’s ass resting upon it, along with the powerful sweetness of her hot marehood, dripping down onto your face.
Like a man possessed, you began to lick out her plump sex, making the mare atop you moan aloud. Pinkie Pie opened her mouth wide and dove her head down over your cock, capturing your entire length, your tip hitting the back of her throat.
Your legs kicked weakly and you grunted at the feeling of your cock being suddenly inside Pinkie Pie’s warm, soft, and wet mouth.
Pinkie Pie moaned around her mouthful, sucking hard on your pole, with a delightful sensation of tugging and releasing. Your whole body shook in reaction and you grunted aloud.
Her long, equine tongue came to encircle around your cock and begun to gently lick it from top to bottom, making you shudder.
Her sweet mare-nectar flowed into your mouth. You hungrily drank it down, moaning in bliss from both the taste and Pinkie’s loving hold over your cock.
She quickly lifted her head up, to near the point of exiting you, before dropping back onto you again. Before doing the same again, and again.
You became lost to the world as Pinkie Pie bobbed her head up and down on your cock, while you hungrily ate out her meaty marehood, which was showering your face with a continuous stream of her sweet, creamy essence.
After quite some time, you soon found yourself near the brink of release. Thankfully, Pinkie Pie pulled her head back just in time.
The mare shifted back to face you. You could see her blue eyes glow in the dark before you. The mare wrapped her hooves around your neck and simply gave you a brief hug, before pulling back.
The mare shifted herself over you, positioning her sex over yours. You shuddered at the feel of her hot marehood over your tip.
“Anon, are you sure you want to have sex? I have a very rare condition called Mega-Love-Expansionism. Which makes me temporarily grow bigger and bigger during sex.”
“Oh, I can see why that be an issue.”
“The good news Mega-Love-Expansionism comes with protection magic to the lover under them, so I can’t crush you. No matter how much more bigger and heavier I get. And since my bedroom is a pocket universe, I can grow indefinitely bigger inside here without destroying the universe.”
“Lucky for me, I love big fat asses.”
“He-he! Here comes the big party!” she said excitedly, before dropping herself down onto you.
Your cock easily slipped inside her and went deep into her. You grunted as her powerful walls squeezed hard on your cock. Your hands squeezed her ass tight, sinking into her soft, plush rear end.
True to her word, you felt Pinkie begun to slowly grow heavier upon you. Your hands began to sink increasingly deeper into her bloating rump. As she grew in size you felt your cock become more and more inadequate, filling her less and less.
“He-he, looks like your little anon needs some help.”
Just then you felt a powerful throb on your cock, and then it sprang upward in size. You sighed in bliss as the wonderful feeling of her vagina returned its loving embrace.
As time went on it became more and more difficult to hold on to her ass as it rose further and further up into the air. Your hands slipped further and further away from her ass. Until they were no longer able to reach it.
Your hands were now on her thick, hind legs just below her massive rump. But even they were starting to be hard to hold onto as she continued to expand in size.
A greater and greater weight pressed down on your lap. Her weight was borderline painful, the ‘keyword’ was borderline. Even as she gained pound after pound by the second, you felt your body was still intact even under the increasing pressure and weight of her growing body.
Growth flowed through her. You could see Pinkie’s dark silhouette in the room, along with her glowing blue eyes staring down at you. She was about the size of a full-blown horse at this point, continuing to grow from there.
Her form rapidly became to overshadow you, growing higher into the air without stop. Her bloating backside began to flow over your body, drowning out your sight. The coldness of the winter was completely vanquished with Pinkie Pie's ass covering your entire body.
The hot confines of her vagina tightly hugged your magically extended cock within, her slick insides milking you for all you were worth. Her dripping wet marehood made your cock well lubricated for the job as it stood tall and proud deep inside her love tunnel.
Pinkie lifted her air ballooning rump, allowing you to see Luna’s moon outside the window for a brief moment before she dropped down on you with a powerful slam.
You now could see somehow from a third-person view just how large Pinkie had become. She was basically an elephant at this point.
She created loud slapping sounds as she relentlessly bounced atop you, her ass was a blur of motion, constantly going up and down upon you at great speed. She moaned and made quiet horsey sounds in bliss. You in turn uttered muffled moans into her ass each time she landed on your face… entire body.
A massive growth spurt flowed through her and Pinkie Pie assumed the size of two African elephants combined. You cried out in bliss. You were lost to the world in darkness, you were only briefly allowed to see Pinkie’s massive ass rise up for a brief moment before she slammed down upon you with an earth-shattering kaboom.
Pinkie giggled before she began to grind herself back and forth over you, rubbing her massive rump against your small form. You moaned aloud into the mass of squishy pink flesh rolling against your entire body.
Her soft, heavy rump massaged your tiny body, the soft feel of her squishy ass rubbing back and forth against your body caused you to shake uncontrollably, you moaned and groaned aloud in pure bliss.
Through her grinding she grew and grew, nonstop, the power of her rump roughy rubbing against your small form with more and more force was driving you insane. She was now the size of three African elephants.
A tingling sensation coursed through your body, singling your impending release. You couldn't hold back and you came with a violent explosion inside her.
Your first load instantly doubled the size of her into six elephants. Another Doubled her to the size of twelve elephants.
Pinkie’s body literally went supernova expansion speed with your final shot of seed. A now galaxy’s worth of ponybutt covered your form, drowning out the cold of winter with an astronomical thickness of fat from her giant ass.
A godlike ponybutt of galactic scale sat on top of you. You felt your cock shrink back down to normal size and slip out of her. Your eyes became heavy from being under such as soft and warm ass.
“Good night my big fat sexy pony.” you said softly, kissing her gargantuan rump and closing your eyes.
“Good night Anony, my best little human friend.” she said softly before she too closed her eyes.
Hours later, you awoke to see Pinkie shrank back down to normal in bed with you.
“Do you grow bigger during anal sex?” you asked.
“Nope. You want buttsex now Anony?”
“Let’s get breakfast first.”
“Aww! I wanted buttsex.” she said sadly.
End
