Your Legs
With a grown, you opened your eyes. Some pink hair covered your left eye, obscuring your environment a little. You were lying upon a soft mattress. But, you didn't care much since your legs felt like they were on fire with pain. Nonetheless, you did not cry out like a little bitch. Manly tears were falling down your cheeks as you quietly wept in pain. Fortunately, you were slightly distracted from the pain since your body was shrouded in warmth and softness.
Princess Twilight Sparkle was the heaviest among the six ponies in the bed with you. She was lying down on top of you. She was even heavier in her sleeping state. Despite Twilight's substantial weight on top of you, you did not protest, even with the horrible pain in your legs, for Twilight came to you in your time of emotional need.
To make a long story short, Twilight found you sitting alone and crying, not manly tears at the time. Naturally, this prompted her to hug you and give you a tender kiss, which soon led to a more passionate kiss. After the kiss, Twilight took hold of your hand with her surprisingly soft, spongy-feeling hoof.
You walked alongside her, holding hand and hoof as she led you to her bedroom. Once there, her five friends then showed up out of nowhere. From there, one thing led to another, and before you knew it, she and her friends were taking turns sucking off your massive cock. Once done sucking you off and drinking your cum, they began taking turns to bounce their lovely plump rumps up and down your lap.
You became well acquainted with every one of their lovely butts. Applejack’s and Rainbow’s were quite muscular butts, with a very thin layer of fat to sink your hands into for you to enjoy. However, Applejack's ass was considerably larger and heavier than Rainbow's, with her being an earth pony. Rainbow's ass was petite in comparison. She was a pegasus; after all, she needed to fly.
Pinkie Pie was also an earth pony like Applejack; while her ass was not as strong as Applejack’s, her big fat candy butt was considerably thicker, which came with a thick layer of soft fat to sink your fingers into for your enjoyment.
Fluttershy’s plump butt was considerably lighter than the others. She was a pegasus, but she did nowhere near the same exercises as Rainbow Dash. Nonetheless, her ass was far thicker than Rainbow's in terms of fat. Rarity’s thick ass, which was nearly on Pinkie Pie’s level in terms of thickness. It was a bit more well-toned than Fluttershy's ass, borderline reaching Applejack's toughness. There was a considerable layer of plushy fat for your fingers to sink into, but nothing compared to Pinkie’s butt.
And last but not least, Twilight’s butt was the biggest and fattest booty queen among her friends; it was even bigger and fatter than Pinkie’s ass. And if you're going to live here for many years to come, Twilight's ass will only get bigger and fatter, for she's not fully grown as an alicorn yet. You were somewhat terrified of Twilight one day being the same size as Princess Celestia.
With that said, you feared if Pinkie Pie became an alicorn, she might beat Twilight and the other alicorns in the battle of who has the biggest butt among them. Pinkie Pie seemed to be some otherworldly creature sometimes. For she could eat impossibly large amounts of food without becoming obese, it all just seemed to go into her ass.
You loved each and every one of their butts. Each of their butts had its own beauty. From Applejack's and Rainbow's toughness to Pinkie Pie's super fat rump to Fluttershy's lighter but still big cushiony soft butt, to Rarity's butt, which was a fine line between tough and soft, it had the best of both worlds; the strength of Applejack, and yet the softness of Pinkie Pie, and finally Twilight's butt which was like Pinkie Pie's butt, but even bigger and fatter.
You came inside each of the ponies multiple times throughout the exceptionally long session. You wish you didn't ignore the warning signs. Their butts slamming up and down your lap was quite painful. However, you were in a state of absolute bliss, and thus were greatly distracted by big fat pony butts.
Fortunately, there were break periods of rest between the sex, consisting of; cuddles, kisses, and taking turns to give you a blowjob again. Your cock seemed to have the endurance of stone; you came again and again in their lovely muzzles, sucking your cock. Your balls never seemed to dry up; you just kept cumming and cumming.
You only wished you could say the same for your legs. The pain wasn’t bad then, but you were super horny and wanted even more pony ass to bounce on your cock. You were blind with sexual hunger.
Once the break was over, they returned to bouncing their plump rumps up and down upon you. It felt like hours before they finally stopped bouncing their rumps on you. Unfortunately, this led to the unintended consequence of your legs ultimately paying the price the following morning.
You wanted to scream out in pain, but you were a manly man. You don't cry like a little bitch after having six sexy pony asses bouncing on your lap. Rainbow Dash might call you a pussy if you wake her up by crying out in pain.
On your right side lay the cyan pegasus known as Rainbow Dash. Her back was turned to you, resulting in her thin… (thin for a pony) firm, athletic rump resting against your thigh. You could see the wings on her back were neatly folded, and her mane was a mess, with much of her soft mane draping over your shoulder.
You turned to your left to see the pink earth pony Pinkie Pie with her back to you. Her considerably larger rump (when compared to Rainbow's) rested against your left thigh. Her mane was even messier than Rainbow's. In addition to your shoulder, it was draped over your face and even covered your left eye.
Three of the six ponies’ identities were left unaccounted for; you did indeed feel three more ponies lying below your legs, with one lying down between your legs. You felt their warm, soft bodies against your legs. You could not see them, with Twilight, Pinkie, and Rainbow being in the way.
Twilight was the most significant obstruction; this large lavender mare lying on top of you was a good few inches taller than your average four feet tall pony. She must be about four and a half feet tall. Fortunately, some of this weight on you was alleviated since her forelegs rested against the sides of your torso rather than your body. Although, her somewhat heavy head did rest on your chest. Ponies, after all, did have huge heads with cartoonishly large eyes. Now that you think about it, everything here had some sort of cartoonish feel to it.
For one thing, your penis has become much bigger since you came to this strange magical little horse land to the point it might as well be a horse cock in human shape. Your towering morning wood was encased between her lovely warm and soft rump's cheeks. You assumed Twilight must have awoken during the night and must have used her magic to line up your cock between her buttcheeks.
You certainly enjoyed the sensation; it helped distract you from the pain in your legs a little. You listened to the quiet breathing of the mares surrounding you. You tried your best to keep quiet; you didn’t want to cause a scene, even as tears continued to fall down your cheeks while you wept in pain.
Fortunately, Twilight began to stir. Her large eyes opened, which immediately became ripe with concern upon the sight of you. Her large purple eyes glowed in the room's darkness like a cat as she stared into your far smaller, human eyes.
“Anon, is everything okay?” came her soft voice.
You took a breather before answering in a weak, low voice. “No… Ow!.. my legs… they hurt. They hurt.”
Twilight gasped before taking swift action by lighting up her horn with a deep pink glow. A pleasant soothing sensation came over your legs, dampening the pain a little. “Don’t worry, my friend. I can heal you with my magic. It will just take a few hours.”
“Th… t-t-t-thanks… ahhhhummmaaa….” you gasped, taking a deep breath,” Twilight. Just-just…. you-you and errrr… ahhh…. your… friends… ahhh…. please don’t be... on-on… top again. My legs… my poor legs… just can’t take it.”
Twilight simply nodded in answer and continued her spell. You were glad Twilight was helping you as of right now. But you dread what the rest of the day may bring once the others wake up. Your poor legs have had enough big fat pony butt. A puny human like yourself was not meant to take so much heavy pony butt.