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Chapter 18

Cal felt his mouth drop open. Watching the hulking lower half of Damian waddle away, he heard some buzzing, and to his left the shuttered door rose up. Waddling over, they all watched as more and more of Damian’s figure was revealed. Seeing the floodlights illuminate his feet, Cal felt his dick rumble at the sight of the two massive nuts that were laid out on the floor. They were each the size of an armchair and weren’t even filling out his sack to the brim. Eyeing Damian’s enormous sack, Cal watched the ground under them closely. After a couple seconds, he could see his nuts swell another inch or two. Feeling his own nuts stir at the idea of draining those cum factories, a shiver ran down his spine. Tearing his eyes away to look at Ethan, he could tell he was thinking the same thing.

As the door rose higher, they all could see the thickening path of fur that enshrouded the base of Damian’s cock. The base was thicker than an oak tree, pipe-sized veins criss-crossing out of his furry crotch. To each side, Damian’s quads exploded out like two mountain ranges of hair-covered brawn. At this point, seeing Damian’s figure overshadow them all, it felt like he really could move mountains. Glimpsing his hairy ab-gut, Cal could barely see the outlines of Damian’s obliques behind the shadow of his pulsing cock.

Following his treasure trail, the overhang of his enormous pecs heaved up and down. Cal could see Damian’s bigger-than-doorknob nipples being pushed down by that enormous chest. Even through the thick hair, he could see the deep striations that criss crossed those pecs. As his pecs rose, the three of them looked side to side to admire his enormous biceps. Even unflexed, they were each the size of huge watermelons, a thick branching vein running down the front of each one. Seeing the incredible width of his arms slope up to meet his globe-like shoulders, they then followed the rise of his mountainous traps until they met with his bull-like neck.

Looking up past the rise of his pecs, they could see Damian’s hypermasculinized face grinning down at them. Taking his right hand, Damian began massaging his massive cockhead. It rose up and out to be level with his chin. Taking his hand away, Damian flexed his swollen cock. The humongous cock swelled longer and thicker, before relaxing back down. Only when it seemed to relax, it was now almost level with his nose.

“Holy Fuck”, Jack whispered under his breath. Cal and Ethan murmured in agreement as Damian took a step back from the doorway. It felt like they were kids trick or treating at the house of a giant.

They all shuffled through the large doorway, Jack needing a moment to squeeze his broad shoulders through the door frame. Stepping inside, it was fairly dark, but the smell hit Cal’s nose immediately. It was a symphony of musk, sweat, and cum. With a series of loud clangs, the light fixtures hanging above clicked on across the room. Adjusting his eyes to the bright lights, Cal looked around. It looked enormous from the inside, easily the size of two football fields. The center of the room was a sprawling maze of free weights and giant weight sets. Looking over at the far corner, Cal could make out the edge of what looked like a small but empty swimming pool. In another corner, Cal could make out what looked like a kitchenette. It was just a sink and some cabinets, but the one open cabinet was fully stocked with protein bars and shakes.

Feeling the ground shake a little, the three of them turned around to see Damian’s enormous figure walking by them. Seeing Damian have trouble waddling around with his enormous nuts, Jack felt his own enormous nuts churn in his sack. Bringing his hands down, he palmed his balls, distinctly feeling the skin stretch a little as they both swelled heavier.

“So this is it!” Damian boomed, his voice echoing down the walls.

Looking around, Cal nodded and smiled.

Turning to look at Ethan, Cal said, “Now it’s time to grow.”

...

Damian led them all down past the free weights to the wall next to the empty swimming pool. Looking down into it, he glimpsed the remains of his last load. Stepping aside, Damian revealed an industrial scale to the small behemoths that followed him. A large display was connected up to the wall to show the weight. Smiling as Ethan automatically climbed up, Damian checked the display.

468 lbs

As Ethan was about to step off, someone behind them sternly said, “WAIT”. Looking around, Cal’s eyes lit up to see Big Jim’s imposing, but still smaller figure. Big Jim maintained eye contact with Ethan on the scale. Looking over, Cal was just as confused as Ethan looked to be. Seeing the display flicker, Cal watched as the number started to increase slowly. The single digits rose higher, until the double digits started rising, and then the triple digits started rising.

Amazed to see it displayed alongside his weight, Cal watched as Ethan’s figure began to swell and bulk up. The tight tank top and shorts he was wearing immediately tore apart as his naked form swelled higher and larger. From Ethan’s presumably 7 foot height, Cal watched as his head rose higher and higher. Inching up closer to Damian, Ethan’s muscles began ballooning up. His arms widened and swelled to the same size they were before Big Jim shrunk them back. His chest followed suit, swelling to the size of two big king sized pillows stacked on top of each other.

His ridged abdominals only flexed tighter as he continued to grow. His 8-pack swelled from the size of bricks to the size of cinder blocks. By the looks of them, they could probably shatter cinder blocks in half now. His cock and nuts swelled rapidly, his dick rising higher and higher as his nuts continued drooping in his stretched out sack. His quads ballooned up, swelling and pushing each other further and further apart. Soon his feet were at opposite ends of the scale. His calves and feet continued swelling and growing until he looked as tall as he was before they left.

Looking up at Ethan, Cal couldn’t believe that he too, was that big, probably bigger. Stretching his giant limbs, Cal couldn’t wait to have himself regrown. Watching Ethan’s nuts and cock continue swelling and growing a bit longer, gently bobbing and swaying. The scale display finished flickering around 778 lbs. Watching Ethan check the number, Cal watched as Ethan’s cock swelled and pumped a deeper shade of red. Seeing his nuts begin swelling rapidly, Ethan immediately gripped his enormous cock and began bringing it towards his mouth.

He was beaten to it as Jack grabbed it and pulled it down to his mouth. Cal watched as Jack’s cheeks swelled as his mouth somehow accommodated the huge anaconda. Ethan fell into the rhythm right away, flexing his legs and forcing his cock deeper into Jack. It didn’t take long, considering how Ethan kept turning his head around to look at the display. Roaring throughout the room, Ethan’s cock exploded his neverending load of cum down Jack’s throat. Ethan had closed his eyes in bliss, but Cal watched as the display seemed to rise higher for a moment. Seeing Ethan’s nuts swell a little bit bigger to the size of pumpkins, Cal watched as they started to rise up and shrink as more and more of his load erupted.

Seeing the display continue to drop, by the end Ethan had shot almost 40 lbs of cum into Jack. As his cock popped out of Jack’s mouth, Cal could already see his nuts begin swelling again as his load refilled. He had already regained 20 lbs of cum before he walked off the scale. Standing next to Damian, Ethan was shorter by about half a foot, but was still well overshadowed by his figure. Cal then watched as Jack stepped onto the scale, his enormous muscle gut overhanging like a beach ball given the amount of cum he just swallowed. The display jumped around before landing at 546 lbs. Cal could only guess where 40 of those lbs currently were. Jack checked the number and immediately reached for his cock. Grabbing the huge 1 ½ foot shaft, Jack already began beating off before he started growing.

Cal watched as Jack’s bulk began growing a lot faster than Ethan’s. Jack’s shoulders broadened more and more as his pecs and biceps began swelling even bigger than Ethan’s. His thickening traps and neck forced Jack to have to look over his giant pecs before seeing anything beneath him. His muscle gut somehow swelled even bigger, his turtle shell abs growing and poking out more and more. His gut continued to swell out until it was nearly as overhanging as his pecs. His growing arms and hands were matched by his cock swelling bigger and thicker, much much thicker.

Cal watched as Jack’s thickening cock swelled even longer than Ethan’s, probably by at least a foot. Only it swelled much thicker, growing even thicker than Damian’s oak-tree-like cock. Jack began double fisting his cock more and more as his head rose higher against the wall. His nuts began swelling faster and faster. They swole from the size of basketballs to the size of pumpkins, but now they were nearly as big as beach balls. If it wasn’t for his rising height, his nuts would probably lie on the ground by now.

His dick managed to continue growing thicker and longer until it matched Damian’s in length but was nearly ½ again as thick. Waddling around the scale, Jack felt his nuts finally stop growing as they hit the scale’s surface. Turning around, Jack read the number.

985 lbs

“Holy fuck,” Jack began to say.

“Shit that’s almost bigger than me,” Damian chuckled.

Sensing what was about to come and wanting to gain from it, Cal stepped up to Jack’s hulking body as he watched his thick cockhead swell and flex. Grabbing it, Cal brought his lips to it and stretched wide. Surprising himself, he felt his mouth enclose around the giant cockhead. Bringing further of it into his mouth and down his throat, Cal sucked deeply and began to turn his mouth. In barely a second he felt Jack’s cockhead explode down his throat. Guzzling down shot after shot of it, Cal felt his chiseled midsection swell rapidly with Jack’s load.

Unable to hold down the slippery cockhead, Cal felt Jack’s cock get ripped out of his mouth as Jack roared and began firing his load at everyone. The thick ropes of cum splashed on Damian’s chest, mixing into his thick chest hair. A few strands even fell onto Ethan’s cum-slick cock, sliding down his shaft before falling onto the floor. Jack finished firing his load and stepped off the scale. Cal gazed up to see that Jack actually grew closer to Damian than Ethan had, nearly coming up to his eyeline. Looking at Big Jim’s figure, he was motionless during Jack’s orgasm but was now motioning for Cal to go up there.

Bringing his naked feet onto the warm metal, Cal checked the rising display.

563 lbs

Turning back around, Cal breathed in deeply as he felt his stretched out limbs tingle and flex. He instinctively began widening his stance as his legs immediately began bulking thicker and longer. Looking up at Jack playing with his still rock-hard cock, Cal’s eyeline began to rise higher, now meeting the top of Jack’s furry chest. Looking from side to side, the straps from Big Jim’s temporary tank top were burrowing further into the valley of his traps. Bouncing his pecs s gently as he could, Cal could still feel the fabric stretch a little. Looking at Jack’s chin now, Cal squeezed pecs forward as hard pecs he could.

The straps snapped off like rubber bands as his own hairy chest was totally exposed. Cal looked down to see Jack’s cock swell even bigger at the sight of his growing chest. Cal licked his lips, still tasting Jack’s nectar. Shuffling his shoulders, Cal brought his hands to his abdomen, feeling his gut start to retract as his growing body quickly used up Jack’s protein-rich cum. Flexing his biceps, Cal watched as they quickly bulged another couple of inches larger, his forearms following suit as they swelled even thicker.

Looking across, Cal was now slightly above Jack and Ethan’s eyeline, but with the scale he was about even. His stomach gurgled loudly, followed swiftly by the sound of Cal’s pouch snapping. He had no clue how it held on for so long, as his nuts quickly fell down and continued swelling. Feeling them around his legs, they felt plumper than watermelons. Cal reached down and began stroking his inflating cock. He had softened back down before, but it had still managed to grow much thicker and longer. It felt as long and thick as when it was hard before.

Stroking it with both hands, his biceps were smashed against the side of his pecs, the growing muscles causing his hands to be pulled further apart. Inhaling deeply through his nostrils, Cal felt his cock stiffen up quickly. Rising from being draped over his swelling nuts, Cal’s cock swelled outwards, quickly entering his view as his enormous cockhead began spurting out globs of precum. The weight of his enormous cock kept tugging it down and out, but flexing it, Cal forced it higher. Grabbing the base of his cock, Cal swung it up and smacked it against his enormous chest. His cockhead spurted a thick splash of precum onto his face. Licking it up, Cal smirked at the sight of his god-like cock.

It felt like his cock was vibrating and buzzing with potential. He needed to fuck somebody soon with this monster, to feel its new size and nerve endings be squeezed and sucked like never before. His nuts began smacking lower and lower as they began swelling like crazy. Cal’s heart was racing, his blood was pumping loudly in his ears as he looked around at his spectators watching him grow, watching his body ascend. Looking down more at Ethan and Jack, Cal looked over at Damian, meeting him eye to eye. Getting off the scale without checking the number, Cal strut over to Damian, his enormous cock smacking from each side of his chest, swinging growing globs of precum everywhere.

Getting closer to him, Cal could feel his feet rise a little higher, his shoulders broadened more and more, his chest was forcing his engorged arms up higher. Pushing the top 2 feet of his cock out of his view, Cal looked down at Damian. Damian’s cock was spurting out precum rapidly, but his cock, revered just minutes ago by Cal, only reached the top of Damian’s pecs. Cal had to look up at his cock now, his glistening cockhead flaring and streaming out a river of precum. Grabbing his cock, Cal rubbed the silk-like skin for a moment.

Looking back at Damian, “get on the scale first.”

Damian stepped onto the scale, his enormous beach-ball sized nuts resting on the surface.

1,048 lbs

“AW FUCK!”

Cal and Damian looked over to see Ethan and Jack both jacking off their cocks again. Jack had just cum again, thrusting his cock up and up as he blew his titanic load. Ethan was still holding on but was drooling at the mouth.

As Damian stepped down, Cal got onto the scale. Feeling his nuts resting firmly on the surface, he once again moved his cock out of his view as he checked the number.

1,276 lbs

“HOLY SHIT!!”

The digital reader was splattered with a thick shot of cum. Turning around, Cal watched as rope after rope of Ethan’s load splattered against him and the wall. Jack’s cock was still pumping vigorously into the air, causing cum to rain down on him and Ethan.

Staying on the scale, Cal angled his cock down as Damian instinctively turned around. Finding the tight crevice between his globular cheeks, Cal began to batter his ram of a cock into Damian. Spurting out streams of precum, he thrusted again and again, forcing his cockhead into him. Sliding more and more of his pulsing shaft in, Cal’s body began shaking violently. Feeling his hips forcibly fucking his cock into Damian more and more, Cal closed his eyes as he felt his cock be swallowed up more and more. Looking down past his pecs, Cal saw Damian’s mountain range of a back tense up as his hips bucked again, forcing another foot deep into him.

Feeling more ropes of cum cover him and Damian as Jack approached them, Cal’s nuts tightened into the most intense case of blue balls he’s ever felt. Wincing from the pain, Cal flexed his cock and felt his nuts release a flood of cum. Feeling wave after wave rush down his cock and into Damian, Cal roared, hearing his thunderous, echoing voice resounding in his ears. As his cock unleashed more and more cum from his beach ball-like nuts, Cal felt something poke his lower back. Feeling a thick rope of hot cum paint his back, Cal’s cheeks spread as Jack’s cock was thrusted into him.

Roaring himself hoarse, Cal’s nuts went into overdrive, firing out gallon after gallon of cum as Jack pierced him deeper and deeper. Tightening his asshole and flexing his cock, Cal felt his body shudder as he felt every muscle in his body tighten. Panting, he checked the dial, seeing the number was rising higher and higher.

1,396 lbs…

1,456 lbs….

1,588 lbs…

His pecs were forced outwards as his chest immediately began swelling larger and larger, surpassing the size of couch cushions. Looking down, his eyeline was rising higher against the wall, but looking down at Damian, he looked about the same. Seeing his cock sliding in and out of Damian’s glutes, Cal watched as Damian’s muscular backside swelled, tightening his grip on his cock, followed by his cock swelling and forcing Damian’s ass apart. His own swelling ass felt like it was being forced apart more and more as Cal felt Jack’s cock swelling thicker and heavier. It felt like he had a log up his ass, and it was growing bigger and bigger.

Hearing Ethan’s moaning behind him, Cal could only guess what it was like for him to be fucking Jack’s massive ass.

1,765 lbs…

1,846 lbs…

1,958 lbs…

Cal felt his breathing slow as his traps began to eclipse his head. Looking down past his pecs, more and more of his massive chest was filling his vision. Needing to slide out, Cal began backing up his monstrous legs. Feeling his nuts dragging on the floor, Cal slid further and further onto Jack’s thickening cock. Getting further down, Cal finally felt his cockhead pop out of Damian’s ass, feeling Jack’s warm breath on his back. Stepping off the scale, Cal watched the number stall for a moment before falling back down.

2,094 lbs

Walking forward off of Jack’s cock, Cal’s cock swinging wildly from side to side, still firing globs of cum. Turning to view the aftermath of their growth, Cal was shocked. They were all massive. Thinking, they were already massive, but now they were massive. The exercise equipment only came up to their crotches. The wall and up to the ceiling in front of Damian was painted with cum from his redwood-like dick. Ethan was stepping from behind Jack, his own body swollen but cut with deeper lines that were like black holes of light. Cal couldn’t imagine how deep the ridges between Ethan’s abs went.

And standing in front of him was Jack. A massive, heaving bull of a man, he was nearly as tall as Cal, but was much thicker. Jack stared at the scale, still panting. He stepped onto the scale, the numbers rising rapidly.

2,489 lbs

Jack was thicker than he was tall, his enormous pecs resting on his massive gut. Beneath that rose up his redwood-thick dick, which looked even thicker than Damian’s now. And beneath those, his enormous nuts, each the size of probably a small car. It was hard to tell. Cal’s entire perception was off. They felt like they were inside a normal room, but it was an industrial warehouse. They were truly giants.

...

“Now what?” Ethan chimed in, mindlessly stroking his still-throbbing cock.

They all looked at each other for a moment, Cal felt a little crestfallen. They were giants, but secluded. They worshiped each other, but it wasn’t enough. And if they did break through the wall to go outside, it was a near certainty that the Army was going to move in on them. Cal looked down, seeing the enormous height drop to the floor, taking in his gargantuan size. He must be close to 20 feet tall now. The other guys weren’t too far off from that either.

“Now it’s time to choose.”

They all looked down at Big Jim’s figure, now rising up just below their cocks.

“Choose?” Damian thundered.

“I’m sensing that you guys think you went a little too far on this one. Is that right?”

They all took a moment to glance at each other, before nodding.

“Well if you wanna shrink back down to a more manageable size, preferably one where you can still go out in public, you need to donate your size to someone else.”

Cal could see Ethan and Damian get nervous for a moment, Jack looked down at his massive cock for a moment before looking up.

Looking back down at Big Jim, Cal felt an idea cross his mind. “How do we donate?”

Big Jim smiled, “well for a little fun, how bout when you cum, you think about who you wanna donate your size to and the more you cum, the more you donate.”

Cal gestured his arms, “I’ll start.”

Cal closed his eyes, and grinned.

Stroking his cock, Cal felt his nuts already churning. Thrusting twice, his cock erupted towards the wall. Instantly, Cal’s body began to shrink down. The other guys were looking around at each other for a moment, checking to see who was getting it.

Hearing a deep chuckle emanating from lower down, they all looked down to see Big Jim rising up higher and higher. Cal opened his eyes, still thrusting his cock as his nuts continued to shoot. Looking down at his body, he could see his pecs and biceps shrinking back down. Looking over, Big Jim was rising fast, and something strange was happening.

Cal stared dumbfounded as Big Jim’s bluish glow began to fade out some, then more, and more. His skin became more and more opaque, his face wasn’t so pale. He continued to grow and grow until it was no longer deniable, Big Jim was living again. His cock erupted a thick glob of precum almost to cement this. Cal looked up at the guys staring in bewilderment.

Cal continued to shoot more and more of his load until he was just around the same size as when they arrived. Finding a measuring tape on the counter, he did a quick evaluation.

7’2 height, 587 lbs, 24” cock

His nuts were swinging around his knees, roughly the size of basketballs now. Flexing and stretching, Cal felt just as huge, and much more flexible. Looking back up, he grinned at the view. He could barely see their faces now, but he could clearly see their excitement. Ethan and Damian were eagerly beating off their cocks now, Jack was trying to engulf his cockhead in his mouth, with little success due to his pecs. But best of all, Cal stared up at Big Jim. His massive schlong was swinging up and down. He looked even bigger now than when Cal reached his max. Gripping his cock, Big Jim let out a big guffaw, clearly elated at being able to feel his cock again.

Just then, Ethan erupted his load, followed closely by Damian. Both of them must have wished for Big Jim as well as he continued to grow, twice as fast. Cal watched, trying not to cum, as Big Jim surpassed 40 feet, towering over Jack now. Damian began slowing down as he approached Cal’s size, matching him roughly. Taking the measuring tape, Damian began to measure himself.

7’2 height, 562 lbs, 22” cock

Damian then proceeded to jerk off more, cumming and shrinking down further.

6’6 height, 410 lbs, 16” cock

“That’s more manageable.”

Cal looked down on him bemused.

“What?!” Damian exasperated, grinning. “I gotta be able to sit at a desk if I wanna go back to college.”

Cal chuckled. “I don’t know what I wanna do, but I definitely wanna be big still. Just big enough though.”

“I agree with that,” Ethan said as he shrank back down near Cal’s size. “I can’t wait to get back into public, tower over everybody.”

Big Jim had to be closing in on 50 feet now, his thick mane of hair was beginning to brush against the ceiling.

“Hey guys!” Big Jim boomed, “This is fucking incredible!! I never thought it would feel so fucking good to be this GIANT. Big Jim began flexing his biceps, watching as the car-sized muscles bulged up by several feet. His cock continued to bulge and swell, growing longer and longer, arching over to the wall. Big Jim’s nuts were closing in on the floor, swaying from side to side as he adjusted his step.

“Man you guys look fucking small down there, you sure you’re done shrinking? Because this is permanent once you guys leave!”

Cal, Damian, and Ethan looked at each other and smiled.

Cal shouted up, “yea we’re sure! We’re going to be giants among people, we’ll let you be a giant among giants!”

Big Jim guffawed, “you better believe it!”

Turning to his right, Big Jim looked down at Jack, who was standing pretty still, his cock leaking copious amounts of precum onto the floor.

“What about you Jack? You wanna stay here and be a giant with me?!”

Jack looked up at Big Jim’s hulking figure, especially his throbbing train-sized cock.

“I wanna be a giant,” Jack growled. He grabbed Big Jim’s cock and brought it down to his lips, sucking the thick precum. Big Jim began bucking his hips. Mere seconds later and Big Jim erupted like Vesuvius, almost launching Jack back from his torrent of cum. Immediately, Jack latched his lips and sucked down furiously. His muscle gut began to distend from Big Jim’s load. Rising taller foot by foot, Jack soon had to bring Big Jim’s cock up to him as he continued to grow. His muscle gut growing bigger and bigger with Big Jim’s load, Jack began to swell bigger and bigger.

Passing 40 feet, Jack’s enormous cock began rising up between them, quickly matching Big Jim’s size. Popping off of Big Jim’s cock, Jack moaned as he continued to grow and swell, his heavy muscle gut still full of cum. Reaching 50 feet, Jack was already much thicker than Big Jim, his cock growing longer and thicker as Jack belched loudly. His enormous nuts were swelling larger than houses as he continued to swell. His head hit the ceiling loudly. He belched again as his cock swelled rapidly hitting the opposite wall. Ethan, Cal, and Damian looked at each other worriedly. Turning around, they all ran to the other side of the warehouse. Running outside, they all glanced back as both Jack and Big Jim crashed into the ceiling, causing the roof to cave in.

The pitch blackness of the night took over as the lights went out.

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Epilogue

16 years later

Cal woke up in his reinforced bed, his morning wood still as tenacious as back in high school. Turning over, he looked at his wife’s sleeping form. Amy was still as beautiful as the day he asked her to marry him. A couple weeks after they all returned to their lives, grieving Jack and Big Jim, Amy returned home. Approaching Cal as he mowed the lawn, she confessed that she was pregnant. The next month they were married.

Cal couldn’t believe how happy it made him to be a dad. And not just any other dad, he was super dad. He took it in stride, since day 1 of James’s birth (Cal told Amy what happened and they decided to name their child after Big Jim). He brought little Jim to playdates, enjoyed being hit on by the other mom’s, but most of all enjoyed seeing little Jim having fun with the other kids. He took after his dad quickly, going into sports from the get go. Peewee soccer and football, while not so peewee himself, little Jim was a natural.

And now, Cal woke up, thrilled for Jim’s first day of school. Every year he felt just as thrilled, although now Jim was getting a little annoyed with his father’s overeagerness on his behalf.

Jim was already up, drinking his second protein shake of the morning. Coming back in from a brisk morning run, he quickly untied his size 16 sneakers. He was really starting to hit a growth spurt right now. With a dad who’s over 7 feet tall, he couldn’t wait to really start growing. 16 years old and he was already 6’9, just 5 inches shorter than his dad. Maybe he’ll be even taller than him. Shrugging off his 5xl sweatshirt, Jim took a moment to look at his rippling muscles. He had worked very hard over the past 3 years to work on his physique, and it was really paying off.

As his friends keep reminding him, he has the genes for it, but Jim keeps telling them it’s all about dedication and patience. But naturally being over 450 lbs of pure muscle tends to make it easier. Wearing just his tank top, Jim climbed upstairs and went into the attic where his meager weight lifting set was. Immediately attacking the weights, Jim felt the rush of blood start pumping through his ears. Grinning at how it was getting easier and easier, Jim quickened his pace.

Rip

“Shit,” Jim groaned. His tank had ripped right across his pecs. Tearing off the sweat soaked tank, Jim was just in a pair of running shorts. Scratching his chest, feeling the coarse hairs matted with sweat, Jim grunted as he picked his weights back up. Pumping himself back up, he began doing bench presses, curls, and squats. Reloading up the bar with more weight, he prepared for another couple sets of squats. Squatting down, Jim felt his shorts tear right across his glutes. Working diligently through the rest of the set, Jim dropped the bar back onto the rack.

Tearing off his shorts, he was left clad in his custom boxers. Apparently huge junk ran in the family, so his dad had been ordering him custom underwear for a while now. Palming his 14” soft cock, Jim felt his nuts swell painfully.

“What the fuck? I jerked off twice this morning, and you guys seem bigger than ever!” Holding up his cantaloupe sized nuts, Jim sighed. Going back downstairs, his cock was already stiffening in his briefs. Snaking down his right leg, his cock began swelling bigger. Going into his room, instinctively ducking under the doorframe, Jim sat down on his bed. Sliding his briefs off, his cock swung up, flicking a glob of precum onto him. Grabbing his measuring tape, Jim was curious.

“Holy shit! 21.5 inches! How the fuck did I grow another half inch overnight?!” Remembering seeing his dad’s cock fully hard, he feels like he’s getting pretty close to matching his gargantuan size.

Scratching his thick beard, Jim laid down and jacked off his engorged cock. Sliding out his legs, Jim massaged his swollen balls.

“This is getting ridiculous. I’m gonna have nothing to wear to school today.”

Remembering seeing some boxes upstairs in the attic, Jim got up and went back into the attic, his cock slapping his thighs loudly. Going through a couple boxes of junk, he found two that said ‘clothes’ on them. Opening up the boxes, Jim found a pile of huge oversized tank tops, muscle tees, shorts, boxer briefs, and jockstraps reeking of his dad's musk.

“These must be dad’s, no one else could fill these things out. Well maybe Uncle Ethan.” Jim remembered first seeing Uncle Ethan, surprised that someone else was as big as his dad, especially downstairs. Pulling through a couple, Jim held them up to his cock. Barely covering half of his, albeit hard, cock, Jim tossed them back down.

Going through the other box, Jim found a number of jerseys and pants. Pulling out a jersey, it was kind of retro. Smelling it, it reeked of cum. Checking the size, it was a 5xl.

“What a lucky find!”

Sliding it on, it was kind of tight over his chest and the sleeves were skin tight on his biceps. Pulling out a pair of sweatpants, he managed to stretch them up and around his massive quads. His junk was ridiculously stretching and filling out the crotch, just how he loved seeing it. Checking himself in the mirror, he loved how the jersey contoured perfectly to show his muscles.

“Perfect fit.” Spinning around, Jim was taken aback by a large figure standing by the weight set.

“Who are you?” Jim asked, ready to take on anyone, even someone bigger than him.

Chuckling, the figure said, “I’m Big Jim.

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  • 2 weeks later...

Just finished rereading this masterpiece. This is one of my absolutely favorite muscle growth stories on this and this story definitely warrants a sequel! Jim is already such a huge stud and it would be so hot to see him outgrow Cal and Uncle Ethan. 

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A sequel you say…

if Jim has that same hunger for growth as his predecessors, then Big Jim would have no choice but to help him grow and grow….. Maybe Big Jim has also been keeping busy with others just as hungry… 😏

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2 hours ago, Genetonic said:

A sequel you say…

if Jim has that same hunger for growth as his predecessors, then Big Jim would have no choice but to help him grow and grow….. Maybe Big Jim has also been keeping busy with others just as hungry… 😏

Sounds pretty on brand for Big JimTwo (or more) rival studs competing with one another to see who can be the biggest and the baddest😄

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