Rainbow Dash, the small sexy pegasus, was bouncing on your lap upon a white, cloudy, soft mattress. A mattress seemingly made out of literally clouds, in fact the very room you were in seemed to be made of clouds. Unlike conventional clouds these seemed to be solid.
Rainbow was only about four foot tall or so like most of her kind. However, unlike most of her kind, she wasn't very plump at all, she was firm and sleek.
Your hands held firmly upon her well toned backside, your fingers only digging in slightly through the thin layer of soft fat before meeting the hard muscle beneath. The mare atop you made quiet horsey sounds and moaned in bliss through this passionate love making. Her rump was a blur of motion on your lap, the sounds of flesh slapping against flesh filled the room.
Rainbow’s long equine tongue lolled out of her mouth, swinging wildly about as she relentlessly bounced atop you. Her wings flapped excitedly during this ongoing session.
You yourself was lost in a sea of bliss with your eyes closed. The softness of her slick marehood was squeezing your manhood, driving you wild. Her silky soft fur against your bare skin felt absolutely incredible.
You thrusted upward to meet her in time with her bounces, this action would sometimes make her create the sound of a squeaking dog chew toy, you chuckled a little every time you heard her make such a sound.
Alas, your fucking of Rainbow Dash could not last forever. So, with that you came inside Rainbow Dash, flooding her glorious pony cunt with your human spunk.
Spurt after spurt of your cum shot into her, Rainbow Dash whinnying in ecstasy, as she too came, spewing out a torrent of rainbow cum all over your lap, her rainbow cum smelled of skittles. In the afterglow Rainbow Dash collapsed on top of you, her head burying into your neck.
Suddenly, Rainbow Dash's cutie marks began to glow with a blinding light.
“Huh?” said Rainbow Dash, making to sit back up, turning her head to the side to look back at her rump.
After a few seconds her cutie marks stopped glowing. When it did, she began to grow… rapidly, a particular strong emphasis of growth in her backside, which bloated out like an inflating balloon.
Rainbow Dash gasped in horror at these turn of events. Her once well toned flanks within mere seconds had become two huge, bubbly beach balls, choked with an ever increasing layer of soft, jiggly fat. Her cheeks rippled like crazy during her growth, flowing like a stormy ocean as more and more mass was pumped into them.
“Anon! What have you done to me?!” she roared, giving you a death glare.
“I don’t know!” you screamed.
Rainbow made a mad dash to the bedroom door, but a sudden growth spurt saw her to be unable to fit outside the door, her massive backside, trapping her in the door frame. The door frame deeply depressed against the soft fat of her ballooning cheeks
She had now literally become the size of the big fat pony known as Princes Celestia, and still growing bigger. Her body only became bigger and bigger, fatter and fatter, heavier and heavier, taller and taller, wider and wider.
You ran to the far end of the room, pressing yourself against the wall. But it was no use, Rainbow Dash’s growth seemed to be showing no sign of stopping, she only kept growing bigger and bigger, now the size of an african elephant.
You screamed in terror as Rainbow's bloating cheeks came toward you, the softness of it pressing against you, as you were pushed into the wall, taking you into a world of warm and soft, big fat horse ass.
The cloudy house began to creak and groan from the increasing weight and pressure of the growing pegasus.
There soon came a loud crash as Rainbow’s bloating body tore her house to sunder… leaving you with no cloudy floor to stand on… and thus you began to fall.
“AAAAAAHHHHHHHH!” you screamed, falling to your death.
The wind howled around you as you dropped like a stone toward your impending death into Ponyville below.
You said your goodbyes to the world, closing your eyes and accepting your fate, when suddenly a purplish blur came out of nowhere and grabbed you in midair, stopping you just short from being turned into a pile of bloody spaghetti bolognese on the ground.
“I got you!” shouted, a soft feminine voice.
You opened your eyes to see an all too familiar, purple alicorn firmly holding you with her two front hooves.
“Hah… errr…. thanks Twilight.” came your low voice.
Twilight said something back… but… it was drowned out by the noise of a heavy object slamming into the earth.
You whimpered in fear, slowly turning your head to see a growing mountain of Rainbow Dash, the local residents of the town screaming in terror, fleeing for their lives as Rainbow swelling cheeks bulldozed nearby houses down.
“Anon, you bastard! You turned me into a big fat, hippopotamus!" she roared, her powerful voice creating a shockwave, sending you and Twilight tumbling onto the ground in a heap… and smashing every window in town.
You quickly jumped to your feet and tried to run away… but alas Rainbow Dash’s cutie marks glowed with a blinding light, followed by a tidal wave of pegasus butt came speeding toward you, crushing you under thousands, upon thousands (if not more) of tons of weight.
Except, you were not turned into a pile of bloody jelly, and despite everything you still seemed to have the ability to breathe.
You were now encased in a soft and warm bubbly fat world. You groaned, feeling a small amount of pain as you felt her weight rapidly increase, your body still maintained its integrity, but you felt a strong overwhelming (and growing) pressure nonetheless upon you.
Despite the slight pain, you found yourself unable to hold back and oncoming erection. Your member rose to attention to poke hard against her colossal rump. Around you, you heard the sounds of moaning and groaning, along with the sounds of flesh slapping against flesh.
“Oh no…. I killed everypony.” came Rainbow’s sorrowful voice, which you could somehow hear
“No, you didn’t.” you replied.
“Anon?! Is everypony Okay?!” she shouted.
“Yeah… uhhhh…. they are currently feeling you up.”
With that Rainbow Dash stood up, much to everyone's annoyance, demonstrated by loud groans, along with shouts of ‘I was only half done!’, and ‘You ruined my fetish!’.
Even now, Rainbow continued to grow even larger. Up and up she rose, seemingly without stop, a growing dark shadow coming over Ponyville.
Rainbow Dash's cheeks became monstrously large mountains of soft, jiggly flesh. Her rump continued to bloat further and further out, the cheeks of her rump soon reaching the size of Mount Everest each, growing even larger from there.
Rainbow continued to grow and grow, her growth eventually stopped when her head reached above the clouds, upon her growth stopping, a horn appeared on her head.
At her new found size, each of her cheeks was now twice the size of Mount Everest. Her mighty, thick hooves were so wide, they crushed all of Ponyville underneath them and a great deal of the Everfree Forest as well.
Rainbow marveled at her gigantic size, she felt so powerful, both physically and magically. Her once well toned rump was now round and plump, thick with layer, after layer of squishy soft fat, jiggling wildly about even with the smallest of movements.
Despite her immense power, no living thing was harmed during her growth. This gave Rainbow an idea, a very big idea.
So, with a flash, you were teleported into a dark, warm, and sticky place, smelling of skittles.
“So… Anon… you destroyed any chance of me ever joining the Wonderbolts.” she said in a low, angry voice.
“I’m sorry, Rainbow.” you said in a low voice.
“But you basically made me become a Giant Godhorse, so I forgive you.” she said in a soft voice.
“Errr, you’re welcome.” came your voice, low and nervous.
“Now, be a cool dude and cum inside me while inside me.”
“But Rainbow, you’ll destroy the world!” you shouted.
“Well sure, but every living thing on said world won’t die. They can just live on top of me… or if I really like them, inside me.”
“Well… I guess… that sounds Okay.”
With that, you lay down on the soft, fleshy floor. You gave a light lick to the floor. You heard her body rumble, along with a loud moaning echo in response.
From there, you began to hump back and forth against the soft floor beneath you, muffled moans and horse noises filling your ears as you made sweet love to her.
You groaned at the amazingly soft feeling of the flesh before you. You held strong, and then began to pick up a rhythm.
Loud slaps of flesh against flesh could be heard echoing through her love canal as you humped the floor in quick, powerful thrusts.
“Cum on! Come inside me already!” she roared.
Rainbow wrapped your cock in a rainbowish glow, instantaneously causing you to release with a loud groan, your cummed stained the floor, mixing in with her rainbow cum. Rainbow with magical aid allowed you to see what the affect of your cum had on her body.
Within a fraction of a second she had doubled in size, the second after she tripled in size, her head soon reaching out into space. Her growth was stronger than ever before, accelerating at a faster and faster rate, her physical and magical strength amplified even further along with it. She moaned allowed as the growth flowed through her.
“Yeeesss! Bigger! I need to grow bigger!” She screamed in pure ecstasy.
This growth was of a pleasure that she had never felt before, the bigger she became, the better it got. Her marehood flowed like a river, creating a waterfall of rainbow cum and flooding the surrounding countryside.
She felt like a true goddess, not an evil tyrant, but the most awesome and sexy pony in existence. Who only became more and more awesome as she became ever bigger.
Rainbow's hooves dug into the earth as she grew bigger, the weight of her hooves creating a deep crater.
Rainbow’s inflating cheeks ballooned out more and more, each now the size of Equestria each, shrouding the world below her in darkness. Her marehood flow of cum was now so strong that it was creating entire oceans of rainbow cum.
Her growth didn't relent, soon the entire planet was split in half. Another growth spurt saw to her body to be twice the size of the planet.
As promised, Rainbow Dash grabbed every living thing on the planet, and then placed them gently on her back.
"Get ready to cum some more Anon, I have a lot more growing to do." said Rainbow Dash bitterly, eyeing the far away objects of the universe with an angry glare.
Rainbow Dash the alicorn, was hungry for more size.
