muscle tf The Jockstrap: Old man Muscle Growth

[Bigboi]

Notes: Exam week just ended, which means I can finally continue working on the next chapter of "The Beast’s Curse". In the meantime, here's an old story that I wrote a year ago. Enjoy!

 

The Jockstrap: Old man Muscle Growth

 

“That’s one hot mouth you got there, gramps. Consider this as a small tip for returning my watch back there.”, The man said just as he was slipping his cock out of the old man’s mouth with a pop.

The old janitor stayed kneeling, basking in his afterglow. Tasting and swallowing the leftover cum in his mouth. After the man tucked his dick inside his slacks, he left the changing room. 

Albert Davis is a 59-year-old janitor of a gym inside of a popular gay cruising spot. The place is always booming with customers for its good reputation. Among the other cruising spots in the city, this establishment is wildly exclusive to hot and attractive men. Customers from different social backgrounds tend to cruise here for a hot session with another hot stud. Social classes do not matter either as long as you have a fairly hot bod and some cash.    

As Albert scrubbed and cleaned away the dirt, sweat, and cum stains left behind by the countless bodies that traversed through the massive space, he couldn't help but feel a deep sense of longing for something more. 

In a place filled with diverse types of beautiful men, Albert often found himself admiring the guys whose bodies were more toned and rippling with muscles. His own body, functional at his age, lacked the sheer beauty and power that seemed to radiate from those he admired the most. And yet, despite these feelings of inadequacy, he continued to work in the gymnasium, day after day, his job of cleaning the fairly spacious gym was the only source of temporal happiness in his life. Sometimes, with a slight stroke of good luck, a generous customer would offer their muscular bodies for Albert to worship. On luckier occasions, they would offer Albert a taste of their cocks. Because of these small and short moments of lust in his job, performing his duties just to bask in the glorious bodies he could no longer achieve, was worthwhile.   

One day, as Albert was diligently mopping the floor, when he came across an abandoned jockstrap lying on one of the benches.

“Jesus, whoever forgot their underwear must still be in cloud9…”

He couldn't resist picking it up and examining it closer. The fabric was soft and had a distinct smell. Albert immediately recognized the jockstrap from its brand and sheer size. 

“My goodness, this must be The Mountain's!”, Albert exclaimed.

The only person who wore this was none other than the biggest bodybuilder in the cruising spot. The man himself is a regular customer who only comes by at the last open hour. Albert gave the stud the nickname, “The Mountain”, purely based on his first encounter with him. It was 2 years ago when his old self accidentally tripped from one of the unracked equipment, when the giant of a man caught his fall. Even when Albert was standing up to his 5’11 height, the giant towered over him with his 6’10 muscular, hairy body. Since that first encounter, he wanted to at least feel and explore the man’s musculature.

“Just the size of his thing is just… incredible.”  Intrigued, he decided to put it on. “It wouldn’t hurt to see what I look like in them.” He wanted to be just a bit closer to The Mountain. Even if he can never reach him, he can at least be close to him in some way. 

Albert disrobed himself from his usual janitorial uniform, leaving him naked. As Albert slid the jockstrap up his legs, feeling the smooth material against his skin, he couldn't help but feel a sudden surge of confidence. 

“The fabric feels so good against my skin, it must be hella expensive.”

He caught his reflection in the mirror and began imitating bodybuilding poses, imagining himself as a senior bodybuilder. He tried to mimic the posing routine of The Mountain from the times Albert caught him posing in the gym mirror.

“Yeah… Big strong bodybuilder, massive muscles…”

After a while Albert felt a growing pulsing sensation all over his body.

“Ah fuck, what’s with this strange sensation?”

Looking down at his body, Albert couldn't believe what he was witnessing, right in front of his very own eyes, his body began to change. Before the old janitor could even react, the first changes took place. 

“ARRRRGH! My face feels so hot it hurts!”

His face was the first to undergo a transformation. Although his facial features remained largely the same, they were now accentuated by a sprinkling of white stubble along his jawline and a well-groomed mustache appeared, which lent him a more rugged, masculine air. The remaining strands of hair that once clung to his scalp fell away, revealing a more robust visage adorned with prominent veins running across his forehead.

“Bigger… I’m growing bigger!”

As the seconds ticked by, muscle after muscle emerged on his previously frail frame, enveloping his limbs and torso like a senior version of the Hulk.  His arms grew stronger, his shoulders broadened, his chest expanded, and his back became increasingly defined. 

“HAHAHA! My arms are so fucking huge!”,  Albert flexed his arms as his biceps bulged with prominent veins.

Albert's quads, calves, and ass grew bigger along with his torso and arms. The pair of legs that once belonged to a skinny and frail janitor gained large amounts of mass and power as they throbbed. White hair began covering the growing body of the old man. Albert's unimpressive penis grew into a beast itself as the limp and sleeping monster cock throbbed and pulsated inside the jockstrap. 

“OHHHHHHH Fuuuuuuuuuck… even my cock is getting bigger too.”

The growing beast's cock surged with power as it grew longer and meatier with every motion as its owner began to move his broadened hips. Albert began dry-humping the air as he thrust his hips up and down, savoring every second of his still flaccid and growing monster cock. 

“Dammit, why am I not hard yet? Is it because my growth is still incomplete?”

With every new development, Albert has fully realized that his dream has come true. He stood there, awestruck at the incredible changes unfolding before him, knowing full well that he would never go back to his previous self.

“I’M GROWING INTO A MASSIVE ALPHA BEAST. HECK EVEN MY VOICE GOT DEEPER!”

The jockstrap, now a part of him, enhanced his newfound masculinity, making him feel stronger and more assertive than ever before. His mind raced with thoughts of what he could do with this newfound power. He imagined himself seducing the very athletes who once made him feel inferior, taking them to heights of pleasure they had never experienced before.

“FUCK, I WANNA SEE MY BODY GROW”

With his newfound confidence, he headed toward the large mirror of the gym. Besides from his old body experiencing the ongoing muscle growth which made it a challenge to walk, he noticed something different. As Albert strode into the large mirror, he realized how his usual walk turned into a sexy swagger as he felt his bulging muscles sway with confidence. Once he reached the mirror he was shocked to see the once old and humble janitor turn into a muscle god covered in a light dusting of white hair. Eyeballing his measurements, he deduced that his new massive body must have weighed approximately 500 lbs. He also grew taller by 2 more inches, reaching a height of 7’11. With slight hesitation, he explored the expanse of his chest, feeling the dense muscles and fur, and pinching the erect and hard nipples on both mountains. Feeling his 6-pack abs, he could feel them throbbing and changing as a silhouette of another pair began to slowly emerge. Turning his back to look at the changes at his rear, he marveled at the hairy muscle bubble ass that bulged snuggly against the jockstrap.,    

“MY GOD, IS THIS REALLY ME..? WHAT AM I EVEN SAYING?! THERE IS NO DOUBT THAT THE ABSOLUTE BEAST IS ME!!!”, The massive janitor flexed his body into an intense, most muscular pose. 

His body language had also changed drastically as his posture became more dominant and confident. Unshackled by any lingering doubts or fears, Albert fully embraced these transformations. He allowed himself to completely immerse himself in the process, relishing each new development that took place within him. 

“GRRRRRRRRR…”Albert flexed and tensed every muscle of his growing body with loud and beastly grunts. As he did so, his physical appearance underwent more drastic alterations. The beast's physique continued to transform into something far more imposing and powerful. Every time he would move a single muscle, the sheer force and strength behind it was evident. Veins coursed through his body like an intricate network, their presence indicative of the immense growth taking place beneath his skin. These veins were not just confined to his limbs; they extended all the way up, to his trap muscles. 

“COME ON! GROW FUCKING BIGGER!!!”

As he continued to flex and push his muscles to their limits, the traps expanded exponentially, reaching ever closer to his ears. Broadened shoulders and deltoids continued to change, swelling with incredible bulk and power. With the tensed-up beastly arms and tree trunk legs, they are becoming denser and stronger than before. The hairy and mountainous chest area underwent remarkable changes, displaying the sheer power of the pectoral and abdominal regions. The continued growth was accentuated by the emergence of well-defined six-pack abs on his stomach, which bulged outwards due to the increased mass beneath them. Throughout this entire transformation, Albert reveled in every aspect of it, fully accepting and embracing the beastly nature that was gradually coming to life within him.

Albert, now transformed into an immense muscular creature, began to relax his tensed body as he allowed the process to unfold further. His eyes were fixated upon his own reflection in the mirror, absorbing every detail of his transformation. The changes that had previously been gradual now seemed to occur rapidly, almost instantaneously. His once flaccid and dormant manhood began to stir, awakening from its slumber. 

“HEHE NOW YOU WANT TO JOIN IN THE FUN HUH, BIG GUY?”, The old muscle beast chuckled

It started out small, gradually gaining momentum until it reached a point where it stood tall and proud. The sight of this transformation aroused Albert immensely, causing his libido to reach unprecedented heights. Witnessing his own transformation from a mere mortal to a colossal muscle beast fueled his desires, making him feel more alive than ever before.

Feeling the imminent surge of his pent-up desires, he instinctively reached downward, seeking to please his growing cock within the tight embrace of his jockstrap. His fingers found themselves wrapped around the smooth pouch, as he gripped onto it with lust. The sensation of his confined manhood beneath the fabric seemed to heighten his urgency even further. He could feel his heart pounding in his chest, echoing the rhythm of his rapid breaths. As if driven by an uncontrollable force, he continued to stroke himself through the fabric barrier, attempting to find relief from the overwhelming pressure building up within him. However, despite his efforts, the discomfort only intensified, causing his frustration to mount.

With Albert's meaty and muscular hands, he grabbed the fabric of the underwear and tore it off his body.

“FUCK! I’M CUMMING! RAAAAAAAAAAAAAAAR!”

With an almighty roar, the unleashed beast's massive penis erupted just as he tore off the jockstrap, spewing forth copious amounts of its powerful, steaming semen across the entire expanse of the gymnasium. The thick, viscous fluid cascaded down from every corner, drenching the walls, the ceiling, the large mirror, and even the very being that had released it. The sheer volume of the potent muscle-infused ejaculate was enough to cover everything in sight, leaving no surface untouched by its forceful outpouring. As the waves of the torrent subsided, the once bustling gym now lay submerged underneath a sea of milky white liquid, a testament to the raw power and ferocity of the creature that stood amidst it all.

"So much spunk... I- I can't..."

Albert tried to regain his composure, but the exhaustion immediately made him fall on his back. The old beast janitor rested on the warm floor flooded with his cum. Before his exhaustion takes over him, he hears the front door of the gym open. The large, towering shadow of another muscle beast loomed over the newly transformed janitor.

“What a great show you put on there gramps. I knew I made the right decision to turn you into one of us the moment we met.” The Mountain said while taking in the grown muscles of the man below him.

“Tsk, such a shame that it took one hyper orgasm to knock you out. But don’t worry, I’ll help you get used to it…”

As the beast slept, his hairy balls quickly replenished his cum and his massive cock rose up again with more life than before. Albert unconsciously began beating his massive meat with his hands as he lay there in his own cum.

THE END(?)

(Feel free to continue this story if you like)

[boardman]

Hot

[growthfan96]

Amazing big hulk sized silver daddy

[asianman2410]

Super hot story! Would love a continuation!