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**DISCLAIMER** This fictional story includes taboo themes (incest). So if you're not into incest, then this story ain't for you. Chapter 1 Burt Hoffman is an old farmer in the state of Texas. He is a skinny 80 yr. old man, weighs 120 lbs., with a height of 5'10, sporting a thin mustache and white balding hair. During farm work, he was always wearing the same old baggy red plaid shirt, jeans, dark blue bib-and-brace overalls, brown boots, and a handmade wheat hat. He has been working on his family's farm since he was 12 years old. After his parent's passing, he continued to work on the farm as his only means of livelihood. Burt and his grandson, Gary Hoffman, have been very close since Gary was 10 years old. Gary enlisted in the army after his 20th birthday and left the rural town. Burt and Gary never missed a chance to exchange letters with each other during their time apart. Gary would eventually return to town after 15 years, only to deliver the news to his grandfather that he was retired. He would stay with his other relatives in New York for a while to plan his next endeavor in life. Burt was happy for Gary with his retirement and new life. Gary would visit back to the farm quite often to help Grandpa Burt with the farm. A year later, Gary told Burt during his last visit that he would take permanent residence back to the farm to help his grandpa. Burt wanted to reconnect with his beloved grandfather after years of no physical contact. Grandpa Burt was delighted with this news, wanting to spend the rest of his days with his beloved grandson. - A month later... in the fields of the farm- Grandpa Burt was excited as he worked on his farm duties. Tomorrow is the day his grandson will stay with him on the farm. But he was also nervous because of the strange feelings that he developed from all the times that he spent with Burt after his return. It was a surprise that Gary never pursued any romantic relationship or showed any interest in anyone. He asked his grandson every time they met if he ever had anyone he was interested in. And Gary would always tell him that no one would want a useless muscle head. However, Burt thought differently, especially when he and Gary would work. Gary often works shirtless because says that doing any farm work with clothes feels way too constricting. At 38, Gary had developed a 230 lbs. bodybuilder body due to his time in the army. Well-defined chest, abs, shoulders, and arms, and with a light dusting of salt and pepper hair on his torso make up his virile body. And his face... he was like modern-day Zeus. Gary's face looked rough with his piercing blue eyes, his angular jaw, and his white well-groomed beard and full head of hair. But despite his tough look, he was caring and gentle, especially around his Grandpa Burt. It was then Burt realized that he had developed taboo love with his grandson. But he knows that his feelings are wrong, disrespectful, and most of all disgusting. Due to his old age, he did not want to ruin his relationship with his grandson after all these years apart. Still, needs to find a way to suppress and change his feelings for Gary before he ever regrets it. Burt was plowing his fields when he stumbled upon something unusual. "What the fuck is this thing. It's glowing too..." Burt said while getting closer to a massive crater. Something was shining in the middle of the crater. It looked like a meteorite that had fallen from outer space, crashing onto his land. Without thinking twice, he went closer and picked it up. Suddenly a sharp pain spread across his body, like lightning struck him. He woke up after being knocked out. Burt forgot what had just happened due to the sudden shock. Then, he noticed that a rock began to disintegrate into nothing. He was confused for a second, but quickly dismissed it and went back to work. If only he knew that the following events will change his life forever. -8:00 PM / Farmhouse- After finishing his dinner, he decided to sleep early to prepare for tomorrow. He brushed his teeth and went straight to bed. As soon as he entered his bedroom, ready to flop down on the mattress, he felt a sudden surge of energy coursing through his body. His skin began to tingle, and his muscles started to tighten. Beads of sweat began to cover his body. Grabbing his chest, "Shit, what's happening to me?!" He stumbled backward and fell with his back on the bedroom door. Grandpa Burt's body began to throb slowly as his body produced more sweat, and gritted his teeth in pain. And after a few seconds, his body began to pulsate even faster. Suddenly, he felt his chest push further away from his body every time it throbbed. It also started happening to his stomach, arms, legs, neck, and back. Grandpa Burt's pair of boots started to feel increasingly snug around his feet. The sensation was initially subtle, barely noticeable, yet gradually intensified as he felt his frame continued to change. It wasn't just his feet that were experiencing a transformation; his legs too were undergoing an extraordinary transformation. With each passing moment, his thighs, calves, and ass seemed to swell, causing his jeans and overalls to stretch taut against his newfound bulk. A surge of power coursed through him, traveling through his torso as his abdominal muscles began to bulge, pushing their way outward from within his body. His back, meanwhile, displayed similar signs of change, displaying increased strength and definition in his lats and trap muscles. Blood rushed towards his pectorals, which expanded further still, straining the buttons on his plaid shirt to the point where they eventually flew off into different corners of the room. As the transformation progressed, Burt noticed that not only did his arms expand with mass, but so did his hands, growing larger and more rugged. Simultaneously, his neck thickened while his trap muscles continued to develop. The combined growth of his back, lats, traps, neck, and pecs caused his plaid shirt and the top of his overalls to burst, and torn pieces of fabric went flying in all directions. The growth was reaching its peak when Grandpa Burt's face underwent a dramatic alteration. His features changed, becoming more pronounced and masculine, as the heat emanating from his body became palpable. With slow and steady movements, Grandpa Burt tried to stand up. But he quickly fell to his knees as he felt the last part of the change takes place. While on his knees, Grandpa Burt groaned and grimaced with each passing second as he felt his aching penis grow larger and harder against his clothes. He moaned and groaned as his growing cock continued to swell. Finally, the growth came to an end as his overalls and jeans exploded from his monstrous tree trunk legs, leaving behind a once skinny old man, into a colossal figure of pure masculinity. Grandpa Burt had transformed into a towering giant of a man, with thick, curly white hair covering every inch of his body. He finally had enough strength to stand up from his knees. His chest was massive, with ripped abs and pecs that seemed to stretch on for miles. The white briefs remained attached to him, though they stuck to him so tight and threatened to burst at a single flex of his ass muscles and cock. "Holy shit, what the fuck happened to me?", he said while panting. "Wait, was that my voice just now? Oh fuck my voice got deeper!", he exclaimed as he got startled by his now deeper voice. "Oh fuck, it's so tight.", his mind suddenly focused on his growing cock. He could feel his cock growing harder and longer with each passing second, straining against his jeans and overalls. "Shit, look at these arms. I'm huge!" As he flexed his biceps, he couldn't help but marvel at how much stronger he had become. A wet spot began to form on his jeans as his balls had transformed into a cum factory. The memories of his old self were still fresh in his mind, and he struggled to come to terms with this drastic transformation. That is until his curiosity overtook his concerns. "Only one way to find out how big I've gotten." Feeling a sudden urge to see himself in the mirror, he turned towards the bathroom and caught a glimpse of his reflection. What he saw left him utterly speechless. Grandpa Burt's transformation was astonishing. The frail figure that once stood before him had vanished, replaced by an imposing mountain of raw masculine power. Gone were the days when his bones seemed to poke through his skin; instead, they were hidden beneath a solid layer of muscle. What once weighed just 120 pounds had swelled to a staggering 450 pounds, turning Grandpa Burt into a veritable colossus. Despite this drastic change in physique, there were some aspects of his appearance that remained untouched. His wrinkled face still remained, although it had taken on a more rugged, masculine air. Thick, caveman-like brows framed his eyes, while his once-bald pate had sprouted a covering of short white hair. A sparse stubble adorned his face, adding a touch of virility to his mustache. As he explored these new sensations, running his hands across his chest, he couldn't help but marvel at the dense layers of hair and bulging muscles beneath his fingertips. Grandpa Burt now fully savored the results of his muscular transformation. As the beast looked down upon himself, he marveled at the sculpted body that emerged before him. His once-flabby midsection had been replaced by an impressively toned six-pack, each individual ridge standing out prominently against his newly acquired muscle mass. The growth wasn't limited to just his abdominal region; his massive chest also displayed a remarkable development. The previously unremarkable nipples were now noticeably visible beneath the layers of his chest hair as they stood hard and erect. His arms, which had initially seemed weak and feeble, had evolved into a pair of formidable monster-like arms. Grandpa Burt could hardly contain his excitement as he admired his newfound strength. His entire body was covered in a fine layer of snowy white fur, adding an extra touch of elegance to his appearance. Bulging veins crisscrossed his neck, chest, abdomen, and arms, further accentuating his newly developed physique. With pride swelling within him, he flexed his arms into a double bicep pose, reveling in the sheer power emanating from his enhanced physique. "Hell yeah, I'm a fucking muscle beast!" Having lifted both his muscled arms, his powerful musk from his hairy sweaty pits and body filled the bathroom. This sudden muscle growth was too much for him to contain as he felt the erect caged beast straining against the remainder of his clothes. "Let's see what kind of monster my cock has become…" Grandpa Burt said with lust in his manly voice. Now with lust surging in his mind and body, he used both of his beast-like hands to tear away his straining white briefs in one swift motion. His now 12-inch beer can thick erection sprang free from its cage, bobbing and throbbing eagerly in front of him as it constantly leaked precum. The hairy bush surrounding his cock had also grown, connecting to the white happy trail on his muscled torso. "Oh my god, is this veiny monster really mine?" With Grandpa Burt's muscle cock being freed from the confines of his white undies, the manly musk coming from his pits and cock was so intoxicating that it sent his libido to maximum levels. "Hmmm I thought I would smell disgusting..." He then brought his face on his left hairy pit and inhaled his natural musk. "but I smell so fucking good!", he roared With his left hand, Burt cupped and massaged his big and hairy balls, which are hot to the touch. And wrapped his meaty right hand around his monster cock, stroking it slowly, feeling the thick veins mapped around his newly grown manhood, and savoring every moment of this new experience. All the while admiring his new masculine face and beastly body. "Oooohhh, this ultra-masculine body is so hot and sexy. And I look so handsome too..." Grandpa Burt slowly dragged his left hand from his balls to the rest of his muscled body. With his meaty hand, he traced the massive expanse of his being. The ridges and blocks of his hard cobblestone abs, his bulging mountains of pecs, his globe-shape delts, and his monster-sized neck. He massaged his jaw, feeling his stubble and mustache which greatly turned him on. Returning to his chest, he alternately pinched and massaged his erect nipples. He began to beat his cock with more caress, wanting to explore every part of his massive shaft. His hand landed on his bush as he stroked downward, feeling every throbbing vein on his pole with every stroke, and massaging the tip and piss slit of the bulging head of his cock. From his cock leaking a steady amount of precum, his monster manhood now leaked like a broken faucet as it kept spraying large amounts of precum. He spat his spit on his cock, adding another layer of lube from his precum. His precum and spit covered his meaty cock, which made him increase his pace even more. Burt grunted and muttered to himself, "Hmmmm yes. Big fucki'n muscle cock... musky beast body." The new muscle beast body and monster cock that Grandpa Burt now possessed greatly turned him on as his muscle worship went on. He was now the biggest in town, and the thought that perhaps he could get bigger crossed his mind. Yes... He will be even bigger. The biggest in the world! And bigger than Gary! ... Gary. Suddenly, Grandpa Burt's memories of his beloved grandson flashed before his eyes. And Burt's mind lingered on all the times Gary worked shirtless with his hot and sexy body exposed. Gary's hairy muscled body... "Oh my beautiful boy..." *stroking his cock faster* His handsome face... "I love you so much" *twisting his left nipple* And in his mind, Gary smiled and whispered something that would finish Grandpa Burt's self-loving session. "I love you too daddy." His words echoed through the real world And with that reality-snapping response, Grandpa Burt flexed every muscle of his body and roared like a beast so loud that it shook the walls and the mirror. "GRRRRRRRRRRRRRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHH !" And his now purple-muscle beast of a cock erupted like a volcano, spewing gallons of thick, hot, and heavy cum all over the bathroom. Cum splattered on the walls, the mirror, the floor, the ceiling, and Burt's tense muscle body. "FUCK YEAH MOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORRREEE" He continued to pound his meat with his right hand, while his left arm was flexing with every fiber of muscle along with the rest of Grandpa Burt's body. After cumming for about 3 minutes, his cock stopped emptying his massive balls and began to slowly deflate. Grandpa Burt staggered backward on the cum covered wall and sat down to rest. He had a smile on his face, still reminiscing the memories of Gary in his mind. Lifting his huge right hand to his face, curiosity and his remaining lust still enveloped his mind as he licked his muscle beast cum on his paw. "Hmmmmm~ sooooo goooood." He then decided to clean up all the cum in the bathroom before it dries up. His new height enabled him to clean the ceiling of the bathroom with ease. Discarding his shredded clothes in the trash, Burt proceeded to clean himself in the shower with cold water to cool down his body. After 15 minutes, he exited from the shower and dried himself up. Watching himself dry his body made him horny again as he moaned with renewed lust. Grandpa Burt raised and flexed his left arm, bringing his engorged bicep to his face. He then licked and sucked on his flexed bicep while groping the rest of his beastly form with his right hand. And after 5 minutes of muscle worship, he decided to lay down and rest on his now small bed. Lying down in bed with his glorious muscled body exposed, Grandpa Burt now pieced together that the changes were caused by the meteorite he found. Whatever power inside the meteorite must have transferred to his body immediately after making contact. But even though he felt more powerful than ever before, there was still a nagging sense of unease deep inside him. Deep inside, he still felt locked in a cage of shame despite his growing confidence. Grandpa Burt couldn't help but marvel at the sheer size of his immense frame. He couldn't help but wonder about what the future held for him as he pondered on the mattress. Would he continue to grow? Would he become even stronger? And what would Gary think of him now? Deep inside, he still felt locked in a cage of shame despite his growing confidence. All these boasting about his newly muscled body to himself could not free him from the shame of falling in love with his beloved grandson. These thoughts swirled in Grandpa Burt's mind until he drifted off to sleep. To be continued... Note: First attempt at a story, lemme know what you think. thanks for reading