Bulking

by LysanderCordis

Rating: mature
Tags: Romance, Original Character, Sex, Big Macintosh, Thunderlane, Anthro, My Little Pony: Friendship is Magic
Length: 8391

Thunderlane is jealous of Big Mac's physique and goes to great lengths to surpass his size.

(M/M) (Weight Gain) (Muscle Growth) (Some Hyper)

Thunderlane has the ultimate Pegasi's build. He is trim, fit, and has abs you could use to grind steel. However, that's not what he wants. Since he was a teen he has been aiming for a true bodybuilder's physique like Big Macintosh's, but has been stuck with the body of an agile flier. Being given a special tome at the Rainbow Fall's Swap Meet will allow him to fulfill his dream of a fuller figure, but not quite the way he was expecting. With a week's vacation time to explore the magic's within, how will he handle being the biggest stallion in Equestria (in more ways than one)?

Published 2016-10-17 12:50:01 UTC
Last updated 2016-10-21 02:41:53 UTC

A Worthy Trade

Thunderlane had just flown in to Rainbow Fall's for a day of relaxed trading. Powerful pectorals and sleek shoulders pumped his impressive wingspan till he hovered gently to the ground. Wearing a tight mesh shirt and some of his work out shorts, he hefted his duffle bag of tradable goods more securely onto his shoulder and began to explore the various stalls. What exactly was a stallion such as Thunder doing at as place like this? Quite simply; he had a week off from the weather team and decided to travel a bit. What better place than a relatively relaxed town that also happened to be having a fun event. Upon being informed of his impending vacation (being the hard worker that he is, he had accrued too much vacation time and was made to spend at least one week off by the weather team), he looked up places to travel and it just seemed right.

He had brought some old paraphernalia from his youth, comic books and the like, some old weights that were now too light but were in good shape, and some old workout clothes that he had washed and folded in preparation for the meet. Hoping his cut and toned physique could sway the traders in his favor, he chose the black mesh shirt that hugged so tightly against his charcoal coat that he looked almost to have it painted on. Now walking through the stalls, he tried to see if anything caught his eye.

Knick Knacks, doo dads, and tchotchkes galore, nothing here really interested the simple stallion. That is, at least, until he saw a single vendor's tent towards the edge of the meet. The sign simply had what appeared to be a cutie mark of a rose above it. It stands out at least, right?

Walking within the small pavilion, various pieces of jewelry and old books were on display. Looks more like a fancy antique store than what someone would bring to a swap meet. A pinkish unicorn stallion looked up from a book he was browsing and smiled greatly.

He said ecstatically, "Why hello there. Welcome to my humble stall. What exactly do you desire today?"

Thunderlane politely replied, "Oh, your tent just caught my eye. A lot of this stuff looks super expensive; are you sure that you want to trade it when you could be, you know, selling it for a pretty bit?"

He chuckled and said, "I'm not interested in bits. Those are quite common and easy to come by. I'm interested in stories. And the swap meet is the best place to find interesting stories, held within the items ponies bring. So, lets see what you've got; I'll find you an item fitting of your story and your wish."

Thunderlane tilted his head quizzically and replied, "My wish? Ooooh...I get it. Old books, expensive jewelry, unnecessarily vague and poetic unicorn. You're a pony with a magic related talent; a wizard, right?"

He chuckled again in a way that made me slightly uneasy, "Oh, you are a clever one. Yes, I am a wizard. Specifically my talent is in caring for the desires of others. Undoubtedly whatever you have brought to trade has value to you, which in turn gives it its own special kind of magic. Every book and necklace here is empty of magic until I fill it with what is stored in the items you've brought. I take a little off the top for my own research, but most of it will be given back. Where else would I find so many potential sources of desire to research than a place like this!"

Thunderlane beamed at this and set his dufflebag on the counter. The wizard levitated objects out one by one with a sea blue field of magic. As he examined each piece his eyes flashed with the same magic aura and he gave a diagnosis of the desire within.

He muttered, "A colt's comic books...all of only the strongest stallions. Work out equipment that looks obviously too small... and clothes you have by now outgrown. Please place your hand on the pile of items good sir."

Thunderlane did as he was asked and the wizard levitated up a blank but sturdy book. He continued,

"Now, please imagine clearly what these items mean to you. What desires fueled you as you used each of these."

Thunderlane did so. He had always been a fit guy, but since he was a colt he had wanted more. More strength, more size, just more of himself. Sadly he had perfect Pegasus genes. Years of work outs and he had only just achieved a swimmer's build, a hard feat when his aerodynamic body tried to shed any excess bulk he could attain. He wished he could be like the other guys at the gym. Big Mac chief amongst them. Now that was a stallion with presence, seven feet tall and with the build of a perfect powerlifter. Sure he had a bit of a gut, but it only made him seem bigger and more imposing. He wanted that presence, that power, that size.

He was woken from his daydream by the pink unicorn saying "All done. Here you go good sir."

He looked down and saw that all color had been sucked out of his items and that the book had a new picture on the front. It was a stylized drawing of himself drawn like the Vitruvian Stallion, except that it contained several extra circles that seemed to originate from his navel and went out concentrically, probably signaling growth.

He looked up at the wizard and said, "Will this do what I think it will?"

He just shrugged and replied, "I'm not sure, its your wish after all. What I do know is that you will enjoy the results of reading that book, no matter what they be. So have fun with it! Though I did sense a lot of transmutation, so maybe keep to granting your wish till you have somewhere private to do so."

Thunderlane replied, "Will do, thank you!", and bolted out of the tent.

Without delay he decided to just fly back home. He was a fast flier so he could make it by nightfall if he was expedient. He had a whole week to try out whatever this book had in store and he was going to have fun with it.

Author's Note

This is the first chapter of my first story. Sorry if there is not much sexiness here but I had to set up Thunderlane's personality a bit as well as a reasonable premise. I promise there is more to cum as he tries out that most interesting book.

Heavy Reading

Too eager to wait or reconsider, Thunderlane opened up the tome as soon as he had gotten back into his room. It was summer so Rumble was in Cloudsdale with their parents, so without fear nor inhibition he began to read. It was...strange. In place of words were almost pictographic characters depicting what appeared to be bulky dudes in various poses. As his eyes slid over the images they lit up, and he felt a little ball of excitement well up inside his stomach. Scanning each page Thunderlane had lit up the entire journal sized book. He looked at his nightstand clock to find that it was nearly 3:00 AM. With tired eyes he fell sleep, and the image of him on the cover of the book began to shift...

Thunderlane woke feeling refreshed and lively, and tried to roll over to look at the time. He was met with a bit more resistance than normal, which caused his eyes to flash open and look down. He pulled the sheets away to see a large barrel chest beneath him and a rounded out gut with just the barest amount of definition. He tried to right himself and found that his new football sized biceps easily pushed his bulk into a sitting position. He started patting down his body to check if it was real. Thick masculine hands explored the changes; from the full and somewhat bouncy pecs to the drum-like muscle gut to the bulging spheres of his biceps and quads.

After a moment of slack-jawed awe he couldn't help but begin giggling like a filly and leapt out of bed. He bounded to the bathroom, feeling his heft cause his steps to resound loudly. It was only upon getting to the mirror he noticed that his muscles and weight were not the only things that had expanded. His shorts looked almost painted on and were straining against a bulge far larger than he had been endowed with only the night before. Stripping the now obsolete shorts off he couldn't help but smile goofily as a sixteen inch cock sprang ro attention, accompanied by balls the size of grapefruits and about as ripe.

He did his best to assume several strongman poses in the mirror, despite having no experience with them. It wouldn't have looked half bad if it were not for the fact that instead of a stern expression he had the look of a colt opening his first Hearth's Warming gifts; a smile as wide and full of wonder as there had ever been.

He stammered out, "Omygoshomygoshohmygosh I-I-I'm HUGE!!! I-I can't believe it! That crazy book worked! I almost thought I was going to wake up a newt or something freaky but it did exactly what I wanted and i'm so big and sexy and and..."

His muscles tensed and he involuntarily flexed, seeing his whole body bulge as he felt a warm rush through his groin and noticed that he just blew his load all over the bathroom counter.

He sighed, "Aaaaand now I have to clean my bathroom. Great. I'm going to have to be more careful...but just look at me! I've gotta get to the gym ASAP to show off a bit. I wonder what I bench now!"

Leaving the sticky countertop for later he lumbered to his closet and tried to decide what he would wear.

He rambled, "My mesh top won't fit anymore...I'm sure I could get my shorts on still. Oh! That crop top I bought on a dare will work perfectly..."

He strutted out of the closet wearing workout shorts that hugged his quads tightly, outlining his package not-so-subtly and giving a nice shape to his muscled bubble-butt. He had slight love handles that drooped over the edge of his shorts, but his gut held firm and jutted out several inches from his chest. Looking more like a sports bra than a crop top, the black piece of attire clung to his pecs and he was fairly sure that if he flexed hard enough he could create tears in it. Scribed across the front in simple white font were the words "BIG BOY".

Slipping on his shoes which thankfully still fit he strutted out into the light of day. He spread his wings and noticed that he must have gained a foot or so of wingspan. Was there anything that book didn't enhance? Using his powerful chest and shoulders he launched himself into the air far faster than he would have though possible with his bulk. However, as he tried to turn towards the gym he noticed he had lost a lot of his turn radius, taking a wide arc. In but two minutes he landed on one knee in front of the gym with a sound much like his namesake, the force of his sudden descent rattling windows and causing all nearby to stop and stare. He stood up and with a smug grin brushed off his shoulder and walked into the gym.

At first no one paid this new Pegasus much mind, but then the gym regulars started to recognize Thunderlane and his new brutish form.

"Damn dude did you eat Snowflake?"

"Finally took my advice and started creatine, eh?"

"I knew you were bulking man, but you might want to cut back before that gut pops. You look tight!"

Strutting over to the bench press he stacked on 500 pounds and decided to see what this new body of his could do. With surprising ease the he began pumping the weights, feeling his chest expand with each movement and breath. This is what power felt like!

"Well partner, looks like someone's been eating well."

He set the bar back into resting position and looked over. Big Mac, in all his swollen glory was standing over him in only a set of workout shorts.

Thunderlane rolled himself off the bench and stood up. His dick chubbed up a bit when he noticed that he actually looked a fair bit bigger than his idol. He then noticed that Big Mac was waiting for a reply from him and said,

"Heh, yep. Started a new diet I found. Seems to have finally worked like nothing else did. What do you think of the new gains?"

Big mac let out a booming laugh and said, "You look fantastic! Welcome to the big leagues, took you long enough!"

He slapped Thunderlane on the back and he had to struggle to keep his boner under control. He hoped it wasn't so obvious...Wait... yeah he was big now and loving it, but why was Macintosh getting such a rise out of him? He wasn't so competitive that he would get a hard on from surpassing his friend, was he?

"I-I have to go. I just remembered I-I left the oven on."

Almost punching himself for his uncreative response he ran out and launched himself into the air, turning back towards his house as best he could. If he had taken a sharper turn an unlucky passerby might have felt a single drop of sticky pre land on their forehead because a quickly expanding stain was forming on his shorts.

Arriving at his house he walked in and locked the door. He was at half mast now and ripped off his shorts. He couldn't help but think of the way Big Mac's hand felt on his thick back and suddenly sprung into a full on rager. Slamming himself into his sofa he started stroking himself as fast as he could. His chest muscles rose and fell with every short breath and his involuntary flexing caused his gut to expand out and back with every pump of his meaty hands. He was producing a steady flow of pre, lubricating his efforts as his biceps twitched and he stretched out his legs.

Why? Did he really compare himself to Mac that much? How much of his desire to grow was built around being w...bigger than him. All the confusing thoughts and chaos in his mind was washed away with the electric flood of sensation as he blew his load for the second time that day. His balls slammed into him fully this time and he arched his back, stretching out his poor tight skin and letting out a moan so loud his neighbors would have to be deaf to have not heard. The spray launched up and the very top of the arc splattered the ceiling a bit, before the majority landed all over his television screen. Confused and strangely exhausted, he passed out on the sofa. Unbeknownst to him, the cover of the book in his room shifted once again as the text inside flared with power...

Full but not Fulfilled

Full but not Fulfilled

It was roughly nine in the morning when Thunderlane awoke upon his sofa. Grumbling because his head felt somewhat dizzy he tried to turn his head to find a certain amount of resistance. Regaining his lucidity, he stammered in shock and a certain degree of horror; he had grown yet again since the previous night and not in ways he would have preferred.

His neck muscles were even thicker and now lined in a ring of flab that made it appear as though he didn't have one. Beneath his second chin jutted thick pecs made rounder and more plush by a thick layer of fat, yet just barely sagging due to the walls of muscle underneath. His biceps had swollen to nearly the size of basketballs and his arms no longer rested at his sides, now forced askew by the combination of his side-moob and thick trapezoidal muscles. Even with his loss of mobility in his neck his belly was clearly in sight; a thick domed out mass of fat and muscle the stuck for about two feet before sagging down into his lap. He couldn't see his legs but he could feel them forced askew by what had to be tree trunk like quads and...a massive package. Churning and a little uncomfortable he could feel testes that took up far more room than he remembered and a cock that felt like it also was taking up much more space.

He began to panic, "A-again? I-I-I'm fucking huge! Oh no oh no oh no, if this never stops I won't be able to walk, let alone fly! That pink bastard at the swap mee..."

He doubled over as much as was possible with his newfound mass, a sudden and immense hunger surging from his core and causing a great deal of distress. Not able to speak or move, he just lay there moaning in discomfort. This body needed food badly but the last thing he wanted to do was gorge himself when he needed to start losing some of this mass immediately before he turned into a ball. Or worse...

Was is possible for a pony to explode?

Before that morbid train of thought went any further he heard several knocks at his door.

A familiar voice asked, "Thunder, are you there? You left in a hurry yesterday."

He answered with a pained moan; the door suddenly being forced open.

Big mac set the broken door to the side then looked up at the pained mass of charcoal stallion in front of him.

He gasped, "Thunder!? What in hells happened to you? You're even bigger than yesterday! Are you hurt? What's wrong, speak to me buddy!"

Thunder managed to get out the words, "Wizard...Book...Spell...Hungry...Very...Hungry..."

Big Mac stated quite annoyed, "Magic, of course it is goddamned magic. I should have known when you came to the gym looking like you've been eating whole orchards for a week. Twilight and A.J. are out right now but I'm sure the princess can help you. You look like someone punched you in that boulder of a gut of yours; you're really that hungry?"

Thunder whimpered, "Y-yes..."

Big mac got under Thunderlane's arm and hefted the mountain of a stallion up, his own mighty legs straining to help him to a standing position.

Thunder muttered, "What are you... doing?"

Big Mac said, "You're in pain and I'm helping you out. Twilight can fix anything that's goin on with that freakish knowledge of magic she has, so you're going to be full until then. We're going to the buffet."

Thunder pulled away a little and whimpered, "I'm... naked."

Big Mac, now realizing his error said, "One second, " And set his friend back down on the sofa. He ran upstairs and grabbed a sheet from Thunder's room.

"This is the best we've got till I can ask Rarity to make you something better. You look like you're about to keel over any second so no arguing."

Thunderlane just nodded as Big Mac wrapped the sheet around Thunder's giant shoulders and tight it securely several times, fashioning a makeshift toga. He then resumed walking his friend to the local buffet which was only a block or so down from the house. The sight of a giant mass of stallion in a toga being carried by the (former) local giant caused everyone on the streets to stop and stare. Thunder could barely register his embarrassment; the only thoughts he could get out were "Food", "Food", and "More Food". After a grueling fifteen minutes they arrived. The buffet staff at the cashier gulped loudly at the sight of the giants walking in.

Big Mac just dropped a sack of bits on the counter and walked poor Thunderlane to a wide bench. It creaked and groaned in complaint as Thunderlane's massive ass set upon it and spread out across. Big mac then started ferrying trays of food to his suffering friend, who devoured them wholeheartedly. Thick mash potatoes and stacks of waffles, biscuits swimming in gravy that he proceeded to drink. Thunderlane gorged like he had never in his life, but the hunger did not go away. Steadily his thick but soft paunch pushed outward and became more firm. His chest heaving with exertion; he was sweating heavily and his lack of table manners resulted in food and gravy all down his chins and cleavage.

Other customers started getting up and leaving. The staff almost kicked them out until the cashier showed them the hefty bag of bits that was paid. As Thunderlane was drinking the gravy from the bottom of another bowl, Big Mac said gently,

"I've got to run to the restroom. I'll be right back big guy."

He did everything he could to make the short jaunt to the facilities as fast as possible, but upon his return but 5 minutes later he was greeted with a domed out charcoal ball almost five feet high heaving up and down heavily by the bins of food.

He frustrated said, "Dammit Thunder, you couldn't wait for me to get back? You look like a tic about to burst!"

Almost sobbing Thunderlane just moaned, "I'm...UURRP...So...UUURRRP...full...Make...It...Stop...Hurts..."

Horrified by the current situation Big Mac apologized to the staff and ran outside. He brought in a large handpulled cart that he undoubtedly just stole and began trying to get Thunderlane to a sitting position. With several cubic feet of greasy food inside him he was completely passive in this process. Big Mac managed to help him up and into the cart, noticing his gut was tight like a drum and that his now very red looking navel was pulled completely tight.

He said, "Here you go you big oaf, lets get you back home and pray that Twilight will have an answer. I shouldn't have left you alone but at least you won't be hungry again until tomorrow."

Starting slowly big mac strained he impressive physique to pull the cart forward as restaurant staff held the double doors open. Breathing heavily he managed to pick up to a steady pace as he pulled his immobilized friend back to his own house. Most passerby didn't notice anything strange because it merely looked like Big Mac was pulling a large cart with a sheet on top, any semblance of ponyhood lost to his domed out physique. Arriving at Thunder's house slowly so as to not jostle his overstuffed gut and risk an injury, he rolled him out of the cart and carefully maneuvered him through the front door. Getting stuck he pushed him through as tenderly as he could, eliciting a moan of pain and a hearty belch from his friend.

He tried to sit him down on the sofa, but his mass was too great and it crashed to the ground, leaving Thunderlane on his back on top of it. His belly sloshed disturbingly and Big Mac took a step back instinctively. Nothing appeared to have ruptured and the bloated mass settled.

Thunder moaned, "Oooah...UUURRRAAP...Can you please...UURRRP...Rub my gut..?"

Big Mac was beyond himself at this point and just ripped off the toga and started rubbing, "When I find whatever two bit spellslinging has-been that did this to you, I'm going to wring his little throat."

Despite the harshness of that sentiment Big Mac was nothing but tender and attentive to his care of Thunder's mountainous belly. Working soft circles he elicited a series of long belches from his friend, his belly shrinking some and regaining a bit of softness. Moans of pain slowly turned to moans of pleasure, little whimpers at the occasional sharp pain in his midsection notwithstanding. If he had not just been through such an ordeal he would have likely enjoyed this attention. Mind numbed, exhausted, covered in sweat and food and in the caring hands of his friend, he fell asleep.

And the tome upstairs in his nightstand glowed sinisterly...

Author's Note

This one is a little darker than the last but its important to the plot. Next chapter some of the mystery will be revealed. Sorry if this was too dark for some of you.

I love your comments so please give lots of feedback! I'm still learning to write smut so any critique is good critique at this point. I'm so happy with the positive reception this story has gotten and would love to hear from you guys more. The next couple chapters are planned out but not written, so they should be coming soon even if I can't keep up this chapter a day schedule.

Size Matters

Groggily Thunderlane awoke feeling a hard cold surface beneath him. The events of yesterday came flooding back to him, and a disconcerting realization hit him. He felt heavier than before. He opened his eyes to be met with two softball sized cheeks just barely entering his vision. He lifted his arm but found he couldn't move it more than 90 degrees at the elbow or the shoulder. Barely turning his muscle and fat addled head, he saw biceps the size of pumpkins bugling just beyond basketball sized shoulders. Unable to tilt his head down, he nonetheless saw his pecs, now quite soft from a thick layer of adipose, sticking out at least a foot in front of him and resting right in under this thick double chin. Beyond that was a belly that stuck out at least two feet beyond that; plush but firm with a thick layer of muscle surrounded by fat within and without.

He began to speak, "What happ," before noticing his voice was now at least an octave lower than it had been before, a rich bass as thick as his waistline.

A much lighter voice exclaimed, "Oh! I think he's awake."

It was at this point that he realized that he was sitting on an industrial sized scale, the blue crystal walls suggesting he was somewhere inside of the Princess's castle. Twilight entered into the room, well, more of a lab, followed by Big Mac. Wearing a lab coat over her casual clothing, she was carrying a clipboard and... that damned tome.

She said gently, "Don't be alarmed; I've figured out some facts about this tome you received. Also...you appear to now be 1082 pounds, 13 ounces. I've got some good news and some bad news concerning your weight gain."

Thunderlane tried to reach up and rub his head but found himself just barely able to each.

He said, "What's going on? I was told that book would grant my wishes or something like that; I never wanted this!"

She replied, "The magic in here is very, very complex. I can't decipher exactly what it's doing, but it is trying to grant some sort of desire. The thing about desire magic is that it keeps working until the wish is fulfilled. What exactly did you wish for?"

Thunderlane merely sighed, "I'm not sure at this point. The wizard just had me think about what some old junk I had meant to me. I didn't say anything out loud I just...daydreamed a bit."

Twilight replied, "The good news is that the book appears to have entered a kind of stasis where it is content for the time being. The bad news is...I can't reverse it."

Thunderlane's expression froze and he stammered, "Y-you can't? Isn't magic your entire schtick?"

She explained, "Unicorn magic cannot counter higher magic's like chaos and desire. Alicorn magic can... but that would be like using a machete instead of a scalpel. The problem here is that this book is directly tied to your body's state. If I tried erasing the magic with alicorn magic...almost anything could happen to you. For all I know you could disappear completely or blow up or any number of other things."

Thunderlane began to cry, tears pooling in his jowls as they ran down his face. Twilight and Big Mac exchanged looks, and she left the room.

He said, "Don't worry buddy. It's not going to be all bad. Twilight is trying to track down this illegal wish granter and she also used victim reimbursement to pay Rarity to make you a whole new wardrobe."

Thunderlane sobbed, "I just wanted to be a big guy...Now I'm a hulking freak! No one is going to want to even be in the same room with me anymoooore!"

Big mac crouched down, though not very far because Thunderlane's ass had elevated him a foot or so off the ground. He said,

"You are not a freak. In fact, I think you look nice. Now stop crying for a second, because we are going out. I'll help you get dressed."

Thunderlane stifled his panicked state to say, "Go out!? I don't want anyone to see me like this! People will run away or laugh..."

Big Mac said, "Nope. Remember how proud you were at the gym a couple days ago? We're going there and I'm going to help you show off your gains. Nopony should feel bad about how they look, especially not one of my friends. Won't abide it."

Thunderlane sighed and slowly rose to his feet like a force of nature. He found it surprisingly easy despite his bulk. Leg muscles that must have been as thick as trees and as strong as industrial supports lifted his mass; his back, though swaddled in fat and rolls arched with powerful muscle and counterbalanced his ballooned out gut. Once he had risen, Big Mac walked over to a table and unfolded some underwear and shorts that could have held at least six regular sized stallions comfortably.

He got down on the ground next to Thunderlane and said, "Lift your leg."

Thunderlane did as he was told but complained, "I can't even get dressed by myself anymore. What is my family going to think?"

Thunderlane lifted his other leg and Big Mac begain to pull up the new shorts. h

Big Mac said, "Doesn't matter. What matters is that you feel comfortable in this predicament you are in and that the varmint who did this to you is caught. He might be able to reverse since he casted it, I reckon. I promise this won't be so..."

Thunderlane felt a small ripple of pleasure wash over his groin and blushed as he noticed Big Mac must have just encountered his obscenely sized genitals.

He muttered, "Yeah...um...those grew too."

Big mac just laughed, "You do know that as inconvenient as this is there are hundreds of guys who would trade places with you for that change alone, right?"

Thunderlane just sighed, "Yeah, but now it is beyond fitting in any pussy. I have officially outgrown sex mechanically."

Big Mac finished and went over to get Thunderlane a shirt while muttering under his breath, "I wouldn't say that."

"What?"

Big Mac replied quickly as he unfolded the pavilion like shirt, "Nothing. Point is that even if this is a bit extreme not everyone is gonna think you look weird. Some might even find you more attractive than the average guy."

Thunderlane rolled his eyes while Big Mac slid the shirt around his arms, careful to not flex for fear of ripping it,

"Oh sure, what Mare would want a stallion who would crush her and her bed while fucking."

Big Mac blushed slightly but his red coat concealed it from his swollen friend as he murmured, "I know I would"

Pulling the shirt over his head Thunderlane didn't hear the quiet confession, he turned to see himself in the mirror.

"Oh come on!"

The black spandex work out shirt had in bright white letters "XXX-L" on it stretched across his pecs which were barely contained by it, a fair amount of half muscle half fat cleavage showing through the small V neck. It actually was almost able to cover his entire gut, which due to his muscle mass was nearly spherical in shape and jutted out at least three and a half feet in front of him whilst also hanging down to his knees. The shirt ended right above his deep navel and exposed his thick tire of a love handle that wrapped around his waist and formed into a roll on his back. His shorts were similarly stretched but fitting, his beach ball sized ass cheeks held into place and his basketball sized nuts hidden well behind his belly, only just barely visible as the fabric pulled the close. The very top of his ass could be seen from behind and his tail looked tiny in comparison on as it grew out from its position nestled between his rolls.

Thunderlane whined, "Why did Rarity have to put that on the front of my shirt?"

Big Mac shrugged, "Must be the size you're wearing. Lets go hit the gym now big guy!"

As they left the castle they waved goodbye to Twilight as they passed her. Even though he could support his newfound weight he had trouble keeping balance, so He ended up having to hut an arm around Big Mac to keep from wobbling himself onto the ground. Flushed as pink as was visible from beneath his charcoal coat, Thunder Noticed how not a single passerby didn't stop to stare at him. Dozens of eyes all focused in on him suddenly made him feel very, very small.

Big Mac noticed the distress and mentioned, "You get used to it, being the big guy. I started getting looks too when I hit puberty. It's not all that bad, even though your case is a bit extreme. You just gotta own it."

Thunder, despite his nervousness, arched his back a bit more and tried to turn his waddle into a strut.

"I look ridiculous," he thought to himself.

However, he started to reconsider when the looks of disgust or horror changed to awe or shock from the simple change in his gait. Maybe there was something to this?

Arriving at the gym Thunderlane had to actually squeeze the circumference of his belly through the double doors, the small bit of struggle giving every gym goer the opportunity to notice and stare. As he walked in not a one said a thing, before a nasally and obnoxious laughter came from a corner of the room.

"HAHAHAAAA...YOU LOOK LIKE A BLIMP...What happened, eat a dragon for breakfast!? HAHAAAAHAAAA"

This had come from one Caramel, a thinner stallion who had an extremely cut body not unlike that one Thunder had but a few days ago. Thunder started to blush and shrink back before he remembered Big Mac's advice.

Own it.

He lifted his arm from Big Mac's shoulder and lumbered forward with surprising speed. Before the mocking stallion had time to react he was pinned to the wall by a half ton of stallion flesh. Big mac blushed and murmured, "Not quite what I planned..."

Caramel wheezed out from his unfortunate position, "Get off me you fatass!"

Thunder grinned evilly at the sudden feeling of power he had and said, "You should have picked on someone your own size," before turning a bit and saying to the room, "Same goes for you all. Anyone say anything about my weight and I'll break your spine with my ass. Someone spot me while I do bench. And you," he turned back to Caramel and pressed in a little, "Get me some protein shake runt, I'm hungry."

Big Mac just stood there a slightly brighter shade of red, before walking up to Thunderlane as he laid down on the bench.

He said, "That uh...happened fast. Didn't think you'd get your confidence back that fast."

Thunderlane just shrugged and said, "Your advice sounded good so I took it. Size matters and I'm the biggest guy around."

Snowflake and Big Mac stacked at least a half ton onto a barbell and lifted it together so that Thunder could start lifting. The whole of the gym was silent in both fear and awe of the behemoth that Thunder had become. There was only one thing of interest to talk about and it had been made quite clear that you shouldn't. Caramel came back carrying a keg of protein shake.

In between grunts Thunder told him, "Just put the tap in my mouth and open it."

He did as commanded for fear of actually being crushed by the Gym's new apparent alpha and he just laid there benching his own monstrous weight. Such power this body had! Not only could he lift more than any normal stallion could ever hope to, he didn't just direct the attention in the room, he commanded it! He was undeniable, his presence so powerful he could not be ignored. All the strongest guys in town were jumping at his every word because he was bigger, stronger, and could dominate them by throwing his prodigious weight around. This is what it felt like to be listened to! To dominate!

The keg ran empty and Thunder let out a long belch, "UUURRRRAP, go get two more you twig. That was barely a snack for a stud like me. Big Mac, Snowflake, this weight is too easy. Sit on the bar for me."

Caramel ran off to go empty the gym supply of shake and Big Mac and Snowflake merely complied, Snowflake with fear at this sudden change in his friend and Big Mac blushing with certain other concerns about this change...

Thunder was now sweating heavily, a little shake dripping from his chin as two kegs were emptied into his gut. What would have made him bloated yesterday just produced a comfortable fullness that only emboldened his ego. He started to get hard , his now two and a half foot long cock pushing up against the bottom of his belly, visible through the leg of his shorts to any who had been watching, i.e. the whole gym. Grunting with masculine empowered self-assurance he finished his set and then sat up, giving a belch that rattled the room. Sweat soaked through his new clothes and ripped down his belly.

He turned to Caramel and said, "Yo scrawny, you're gonna go help me shower off now. The faster you do the faster I go home."

Carmel was blushing with annoyance at the bossy stallion but decided it best to just comply until Thunder forgave him for his outburst. Strutting with a swagger that set his ass bouncing heartily, Thunder walked to the shower, not noticing the disappointed look on Big Mac's face. He commanded Caramel to strip him down and just leaned against the tiled wall with his arms behind his head as the smaller stallion scrubbed.

He chuckled confidently, "Make sure to get between all my folds. You should have thought about this before you laughed at a guy nine times your size."

Caramel said, quite annoyed, "I don't know what crazy roids you took to get like this. I'm...sorry for laughing. I kinda deserve this but we are not making a habit of this."

Thunder laughed, "Deal. Just had to make a little statement today, you being the easiest target. No no, we're not done yet. You have to get under my belly too."

Caremel rolled his eyes, but as he lifted the titanic gut Thunder shivered at the sudden stimulation, which combined with his power trip sent him over the edge and he emptied the gallons of cum in his nuts right onto Caramel's face. He wiped off the copious spunk as best he could before yelling,

"Oh come on man! What that necessary!?"

Slumping slightly against the wall while breathing heavily, Thunder said, "Sorry, not quite used to this body yet."

Carmel just took the washcloth and wiped as much cum as he could off Thunder's underbelly before standing up and saying,

"That's all you get. Now excuse me while I wash my face with bleach."

Carmel left in a fit while Thunder just laid back against the tile, smiling wide. Big Mac was right. You gotta own your size and it's not that bad. he could get used to this life.

Though he should have had caramel send Big Mac in to help him get his clothes back on. Oops.

New Normal

Big Mac helped Thunder get his clothes back on, as reeking of musk as they were. Squeezing him back through the front door Thunder lazily wrapped a swollen arm around his friend and began to speak,

"You were right! I don't miss being scrawny at all. However, even with three kegs of shake in me I am starving. Want to go hit a buffet with me?"

If Thunder had been able to bend his neck he might have seen the tent in Mac's workout shorts, but instead all he did was hear the large stallion say, "I-I could eat. I d-don't think that buffet would want us coming back and the only other one is across town. It'd be closed by the time we waddled you there."

Thunder laughed, "Think I can still fly?"

Big Mac began to open his mouth but Thunder had already lifted him up and held him bridal style; resting him atop his belly. Powerful back muscles, as swaddled in rolling hills of fat as they were, flexed and Thunder saw that his wingspan stretched a good thirty feet across, more like an albatross than the hawk-like set he once sported, With one powerful flex of his shoulders and pectorals, he launched himself into the air. Pegasi wings rely on magic as much as physics and are undersized anyway. His stayed proportionate so he could still at least get off the ground.

Big Mac was yelling at an octave he had not achieved since he was a foal, "AAAAAAAAAHHHHH I'M AN EARTH PONY SO PUT ME BACK ON THE EARTH. YOU'VE GONE MAD, HOW ARE YOU EVEN FLYING AAAAAUUUAAAAAAAAAH"

Thunder just let him get it all out. Honestly, nestled in his giant arms and between his pillowy pecs even if they fell he had about a 50/50 chance of getting a soft landing or being crushed. Eventually he had stopped his screaming and just lay there speechless as they flew.

Thoughtlessly he muttered, "You're comfy."

He then blushed and looked at Thunder who just chuckled, "I bet I am. I think my wings are holding up well as long as I glide. Every flap is like a set at the barbells. There's one concern."

Big Mac's expression went from embarrassed to terrified, blush receding into a paling behind his red coat.

"Concern? There should be no concerns a hundred feet off the ground. How long do I have to live? Is there time to pray before I hit the ground?"

Thunder gave him a look, then continued, "No, nothing like that. It's just an observation. My wings looked very hawk-like before, good at acrobatics and such. The closest to a bird they are now is an albatross. I just remembered a vital fact about albatrosses."

Big mac gulped loud enough to be heard over the rushing wind, "Y-yes?"

Thunder said, "They always crash land. Well, let's test this out?"

With that he pulled into a descent, Big Mac screeching like a filly in a room of spiders. Thunder tried to pull up like normal, but the force almost ripped his wings off so he had to close them. He braced his legs and as the hit the ground he just skidded for about forty feet, his feet drawing a thick trench in the dirt road. Ponies ran out of the way of the wrecking ball that was Thunderlane and one particular merchant had to leap out of the way, choosing between his life or his cabbages.

Upon coming to a stop Big Mac was still screaming at the top of his lungs. He then stopped, looked at his surroundings, patted himself down for injury, and said, "Put. Me. Down."

Thunder, on the other hand, could not stop laughing.

"HAHHhuHAAAAA...You should have seen the look on your face, you big baby!"

"WE ALMOST DIED THUNDER!!!"

Thunder set Big Mac down and shrugged, "Almost being the operative word."

Big Mac grunted, "Bird brains and your obsession with defying gravity, safety, and common sense."

Thunder pushed his belly into Big Mac and said, "Want to say that again, tiny?"

Big Mac suddenly felt very, very small, his confused boner unable to tell if he should be aroused again or maintain a flaccid terror.

Thunder burst out laughing again, "HUAAHAHAHOOOO, come on man, I'm not going to rough you up like Caramel. You've been a great friend, lets get some grub."

Big Mac was relieved for a second before realizing he was actually disappointed. Thunder wrapped an arm around him and they walked in through the wider double doors of the buffet. A bored cashier looked up from his book and leapt back.

"ACK, The rumors were true!"

He then ran behind a kitchen door and yelled some things before coming back to his seat and saying through a strained smile, sweating,

"Oh, um, what can I do for you...Gentlecolts...this evening?"

Big Mac said, "Dinner, lots of it."

He dropped a similar sized bag of bits as the previous night.

Thunder inquired, "How come a farmer can afford to spend money like this?"

Big Mac smirked and said, "Monopoly on a common good is nice."

As they walked into the buffet proper they saw new trays of food were already being put out by staff as if it was a dinner rush at only 3:00 in the afternoon. Thunder couldn't help but grin. His reputation proceeded him it seemed. Taking place at a big bench that groaned and bent at his weight, he put his hands on his belly and said,

"Well, I'm waiting?"

Instead of complaining Big Mac just ran to the food like his life depended on it. Funny, he was trying to get a rise out of him by being bossy. Maybe he still feels guilty for last night? He came back with several trays of food and Thunder just gorged as heartily as he had before; the key difference being that he could enjoy it this time. Juicy burgers and thick steaks and the most creamy mashed potatoes he had ever eaten. It seems his good's were not the only parts of him that were more sensitive. Everything tasted better than it had any right to being a small town buffet. Managing a semblance of manners he merely got juice and crumbs around his lips instead of drenching himself. Big Mac didn't even stop to get himself food, just ferrying Thunder's meal to him diligently and without word, a goofy smile on his face. Thunder wondered if he looked that goofy when he first grew...why would big mac be having that reaction to feeding him? Eh, unimportant. This brisket however was an immediate priority.

Already the staff have had to start refilling some of the food bins, but Thunder's gut just swelled and stretched to accommodate his meal, already sticking a foot out farther in all directions that it had before. Still somewhat bouncy, it nonetheless turned just a little pink at his navel. Big Mac seemed intent on repeating last night's venture because he just kept on bringing more food with a skip in his step and a smile on his face. If only Thunder's range of vision could extend past his pecs; Big Mac's dick had finally decided on "Happiest day of it's life". Other customers were slightly disgusted by the display of gluttony and the outline of Big Mac's schlong, but otherwise went about their meal without complaint. Thunder was starting to breathe heavily, his chest rising and falling like the equatorial tide. Still, any food brought in front of him he happily consumed, the flavors almost orgasmic in themselves.

Big Mac had started poking Thunder's belly each trip from the bins to check how full he was...amongst other reasons. Two hours into their meal Thunder's belly had stretched out another foot in all directions. Now measuring almost seven feet across, his belabored breathing had caused him to start sweating again. BIg Mac came back with another tray of food then stopped in his tracks, smile turning to a frown.

"Goddammit I overdid it."

He started to walk away with the tray but Thunder reached out and burped loudly, apparently not wanting Big Mac to take the food away.

Big mac said, "You sure buddy? You look like you could pop."

Thunder wordlessly smiled and nodded, still wheezing slightly. He pointed towards his mouth.

Big Mac almost came right there but held off and walked over and hand fed the tray of barbecue chicken wings to his hulking friend. Once they were done the bench beneathe Thunder creaked loudly before it crashed. The resulting boom knocked tables over and caused others to lose balance. Laying there like a beached whale, he just smiled widely; at peace with himself and the world.

Big Mac helped him up and together they started the long trek back home. Big Mac helped him keep his belly steady as he belched and burped with every step, groaning happily and the waddled back. All in all it took most of the day with several rests to get him back to his house. Then another fifteen minutes to squeeze him through his front door. That would have to get fixed. Thunder just laid down on the ground, not even thinking of using the stairs to get to his bed.

He said, "Thanks buddy...huff...best...UURRRAAP...Day...wheeze...ever..."

Big Mac smiled and started to leave before Thunder continued,

"See...huff...you at...pool...tomorrow?"

Author's Note

Ew, a romance chapter.

I'm kidding. I hope you guys are ok with no sexy stuffs this time around. This set up is important though. I am loving the positive response I am getting and love your comments! Share your thoughts with me, I love hearing from you!