It was a sunny day in Equestria, like most days here pretty much. Today you, the human did the usual in the local park of Ponyville, watching big fat pony butts as you sat on a wooden bench, while dressed in a fine black tuxedo.
These ponies towered into the air, standing at least sixteen feet tall. The mass of their bodies was like that of an African Elephant. The cheeks of their rumps was cartoonishly beach ball shaped, slightly disproportionate in size when compared to the rest of their bodies.
These massive ponies walked along a paved path through the park. Every step these ponies made caused their rumps to deliciously jiggle about.
It was truly a breathtaking sight to see the absolutely gigantic buttcheeks of these ponies. However, there was just too much booty meat on these ponies for you to handle. So you were content to be the local pervert in the park, that looked at big fat horse asses all day.
Suddenly, a dark shadow loomed over you, blocking out the sun.
“Anon, enough looking at pony butts. It’s time for you to cum inside the pony butt!” boomed a tomboy girl’s voice.
Slowly, you looked up to see the gigantic form of Rainbow Dash hovering in mid air just above you, that somehow can fly, despite her size.
“Errr…. Rainbow. I’m not sure I can handle the pony butt.” you said nervously.
Rainbow came down with a slam, her massive rump creating a deep crater in the earth before you, the resulting shockwave from her booty force nearly sending you falling off your bench.
“Whoa Rainbow…. watch it!” you shouted.
“Come on Anon, you can handle the pony booty.” she said in an unusually soft voice.
“No… Rainbow… I-I…-- As you spoke Rainbow Dash turned around in quick session and presented you her big blue rump. Your jaw dropped at the sight of her massive, beautiful rump. Like two bloated beach balls her asscheeks were, thick and bubbly. A dark shadow loomed over your small form from under the shadow of her massive ass.
Foam formed in your mouth at the delicious sight of the mare swaying her hips from side to side, causing her thick cheeks to wobble widely about. Each thick mass of her cheeks created a loud slapping sound of flesh slapping against flesh from her swaying hips. A thick stream of rainbow cum dripped from her backside, engulfing your senses with a strong scent of skittles, and forming a rainbow puddle of her creamy essence at your feet.
“Don’t you want to cum inside this well toned, athletic pony ass?” she said sexfully, giving you bedroom eyes.
You shook your head, taking yourself out of the trance of staring at her magnificent rump.
“Errr…. Rainbow, it's far from well toned. It is in fact, a very fat ass.”
“WHAT!?” she shouted.
“Errr, um.. I mean--”
“How dare you insult my ass!” she said in a raised voice.
“Rainbow, while your ass is not as big as most ponies, it's still freakin’ huge. So, there's no way I could handle such an ass.”
“Come on Anon, my butt is not too big for you.”
You stood up, making your way to stand before her giant pony butt. From there, you reached your arms outside ways, forming a t-pose. Each arm of yours had not even reached halfway across her massive rump. Your hands themselves had just barely grazed her cutie marks.
“Rainbow… look at the size difference between us. There’s no way this is going to work.”
“Don’t be a pussy Anon. Of course it will work.” she said angrily.
“Rainbow, what’s the average size of a stallion’s penis?”
“Average is forty inches long and with a girth being about half the thickness of most ponies legs. They are a bit on the small side for me, I like stallions with super sized cocks, who be at least eighty inches long and twice the thickness of a pony’s leg. ”
“Okay… but I’m not even a quarter the size of a stallion’s average penis size, in both length and girth.”
“That’s exactly why I want you to have sex with me. I want to feel what it is like to have a small dick inside me. Plus, I’m sure you can find ways to please me.” she said, waving her hoof nonchalantly.
You shook your head dismissively. “There's no way I could please you.”
“Uhhh, you got hands and a mouth dude.”
You sighed deeply. “Small hands and a small mouth.”
“Come on, Anon! Don’t be a pussy. Cum inside me already with your cute small penis.”
“Hey! I’m not a pussy and my penis is not small!” you shouted, glaring up at her.
“Then I dare you to have sex with me… Rainbow Dash.”
“Fine! I will!” you shouted.
Rainbow Dash made a sound like a dog’s chew toy at your answer, smiling broadly, with a pink blush on her cheeks.
With that, she slowly flew into the air as to not create a shockwave. From there, she grabbed a large cloud (at least by your perspective), which was about half her size. The mare then bashed the cloud together to form a rectangle shape.
She lightly descended down to the ground. Once there, she placed the mattress at your feet, before turning around in quick session.
You became transfixed at the sight of Rainbow Dash’s big blue rump. Rainbow Dash stared back at you with a nasty grin on her face.
The massive mare brought a hoof to her right buttcheek. "You want this pony ass, don't you?" she said sexfully, applying pressure to her rump with her hoof.
Her hoof pressed deep into her thick right flank like soft memory foam, creating a deep depression. You instantly became rock hard at the sight.
She giggled, before pulling her hoof back quickly. Like a stone being thrown into a lake her rump rippled like jello by her hoof's sudden absence.
You stared transfixed as her cheeks wobbled about, the loud slapping sounds of flesh smacking against flesh was music to your ears.
When her cheeks finally settled they returned to their perfectly round, bubble butt shape.
You pulled down your pants to reveal your fully erect penis. Rainbow Dash frowned at the sight of it.
“Jeez dude, you’re tiny.”
“Well Rainbow, we're not exactly compatible. With the size difference and all.”
“Yeah… this is going to be awkward.” she said, blushing profusely, a hoof rubbing the back of her neck.
Rainbow Dash lowered herself to the ground, laying down her massive rump on the cloudy mattress below.
“Just try your best Anon.” she said softly.
You approached the prone mare's huge rump. A dark shadow loomed over you once you stood before her big and mighty rump. A great heat radiated from her marehood, along with the faint smell of skittles.
Experimentally, you placed your hand out on her right buttcheek. A lovely warmth and softness met your hand upon making contact with the smooth blue fur against your bare skin. When combined with the softness of her rump's flesh you could not help but shudder.
Like a silky soft water pillow your hand sank into the thick layers of fat. With a grunt, you applied pressure, pressing deep into the thick layers of her soft, malleable flesh.
Eventually, your hand met the firm muscle deep beneath the squishy soft fat. You kept your hand like that for sometime, feeling up her muscles.
You payed homage to her massive glorious ass. Your loving hand rubbed the squishy soft flesh between your fingers. Next you grabbed a chunk of the soft fat and squeezed it tightly, loving the silky soft feel of it. Rainbow Dash in turn gently stroked you with her long rainbow tail, causing you to giggle a little at the ticklish feeling of it against your bare skin.
You came forward to give her buttcheek a loving kiss, Rainbow Dash’s buttcheeks literally blushed a light pink from this gesture. You hummed at the taste of her ass, tasting of sweet skittles.
You pulled your hand away, the sudden absence of your hand causing her rump to jiggle wildly about and ripple like jello. You stared transfixed at her wobbling rear, watching as her rump slowly settled into place, before once again her ass returned to its perfect, bubble butt shape.
Rainbow brought her hooves to either side of her cheeks. From there, she took a tight grip of her backside, deeply depressing her fat cheeks, before stretching them apart, revealing the deep canyon between her huge backside.
You could now see her plump, meaty marehood, glistening with rainbow cum between the dense, queen sized mattress thickness of her rump's walls.
You stepped forward, taking a firm grip of her ass with both hands on either side of her cheeks. Wonderful softness met your hands as they sank into the squishy soft fat.
Now with a good hold of her ass, you proceeded to press your cock against her flesh, between her rump's canyon on the right. You shivered, taken aback at the incredible softness that your cock's tip felt upon making contact with the right wall of her asscheek.
“Can you get it in?” she asked.
“Errr, let me see.” You looked down to judge the distance from your cock to her pussy to find you were nowhere near long enough to reach it. There was at least the equivalent of an average human's arm's length before you could even make contact with it, past the dense mattress like walls of her asscheeks. “Not even close.”
“Is your dick really that small Anon?”
You growled. “Well, is your ass really that fat?”
“For the last time, my butt is not fat!” she shouted.
“Whatever you say, you hippopotamus.” You pulled up your pants and turned to walk away from her. “Anyway, I’m going home to fap.”
“Anon, you pussy! Come back here and fuck me!” she shouted.
“Get a shrinking potion or shrinking magic cast on you or something first, then I’ll fuck you.”
End
