Whenever He's in the Mood...

[6 word request: hung bodybuilder's muscles inflate when aroused]

Theron took another swig of the Fireball whiskey on the bureau, followed it up with another toke off the lit joint, then turned around to that evening’s conquest. The bodybuilder he’d followed home from the bar was named Marc. He had everything Theron was in the mood for: big muscles and a big dick, which was enough for Theron to completely ignore his bulldog-face.

Theron strutted sensually from the bureau, shedding his tight t-shirt first, then unbuckling his pants and sliding them down his lean, muscular thighs. Theron licked his lips before gently tweaking one of his nipples. His chest was nowhere near as big as the musclestud’s before him, but he knew by the look on the big guy’s face just how pleasing it was.

Marc took another swig from his beer and licked his lips, rubbing the bulge in his shorts. (Yes, he wore shorts to the bar. Again, Theron wasn’t here to be his style consultant, and the shorts made it easier for Theron to deduce that Marc was, in fact, packing a whopper.

“Damn,” Marc said. “I thought… I thought you’d be like a little muscle otter underneath but… you’re carved outta marble, man!”

Theron smiled, feeling the buzz of his belly full of cinnamon liquor and the THC in his blood. He ran a hand down his ripped abdomen--a product of both amazing genetics and 500 crunches a day. “Like a greek god,” Theron said with a smile. He knew how beautiful he was, with his jet black hair, his crystal blue eyes atop high cheekbones and a dazzling smile. His dimples made strong men weak.

“You like what you see?” Theron asked. Marc nodded emphatically. “Well, I walked halfway to the bed. What are you going to do to get me the rest of the way there?”

Marc ambled out of the bed, standing to his full six foot height, just a few inches taller than Theron. He yanked off his t-shirt with one thick hand and made his massive pecs bounce. Theron smiled, and Marc hit a double biceps pose. “They’re hard, too. I’m hard all over,” Marc said with a dopey grin. He turned around and hit a lat-spread. Theron wanted to roll his eyes, but he resisted.

“C’mon, big guy, this isn’t a bodybuilding competition. I know you have muscles. That’s why I came here. It’s gonna take more than that to make me stay.” Theron licked his lips and winked.

Marc, confused, yanked down his shorts and presented his half-erect, bouncing cock. As Theron had deduced, it was a big piece of meat: at least nine inches, and growing, as big around as Theron’s wrist. Yes, that was exactly what he wanted.

“Man, you’re… more built than I thought you were,” Marc said as Theron approached.

“Nah, I’m just a little guy,” Theron said--not noticing that his body was, in fact, ten pounds heavier. On his small frame, the 10 pounds of muscle added a sizable amount of thickness to his body. His shoulders were more broad, his pecs more pronounced, his legs almost getting in each other’s way. Theron brushed off the strange sensations in his body as drunkenness and approached his conquest.

“No, you’re like… you’re like seriously jacked, man,” Marc said, an eyebrow raised. Before Marc, where a slender, aesthetically flawless beauty had been was now a gorgeous underwear model. Marc reached out to give Theron’s thicker arms a squeeze. “These things just… blew up. I swear… you weren’t that big before!”

Theron brushed off the strange contact and dropped to his knees, swallowing both of Marc’s egg-sized balls. “Wow… you weren’t that big before either!” he said, twisting a tight grip up and down Marc’s rigid, 10 inch cock. A dollop of pre-cum swung from the end of it. Theron slowly rose up and licked up and down the big shaft, causing the bodybuilder’s massive legs to buckle.

“O-oh… oh shit,” Marc said, wobbling unsteadily. He reached out with his big paws and grabbed Theron’s arms. “Holy fuck, dude, you’re fucking seriously swole! How is this happening?”

Theron rose to his feet, completely unaware that he’d gained fifty pounds of pure muscle on his frame in the past few minutes. He looked like an amateur heavyweight bodybuilder--nowhere near as big as Marc was, of course, but certainly a talented up-and-comer who would turn heads at any gym. “What do you weigh, like… 240? 250?”

“I’m 179,” Theron said, leaning forward to lick Marc’s big pecs. “But I’m a dense 179. People always guess lighter.”

“No way are you--a-ahhh… oh, man, geez, RIGHT there…” Marc started to melt under Theron’s tongue bath.

“Now get on that fucking bed,” Theron said, grabbing Marc by his huge arms and tossing him back on the bed. “And get ready to get milked, stud.” Marc cried out as he was tossed around like a much smaller man. Theron was just too buzzed to realize he’d just thrown a 280 pound Hulk with ease. As he climbed onto the bed, it tilted in Theron’s direction, groaning as he inched forward, a few pounds heavier every second he approached.

“Bud, is this like… an allergic reaction or something?” Marc asked as a man nearly as big as he was glowered down at him. Theron reached forward with a sausage-thick finger and pressed it forcefully over Marc’s mouth, silencing him. Then he slid the big finger into the bodybuilder’s mouth. Marc slobbered over the sensual penetration, his dick bouncing a few times, burping up pre-cum. Marc moaned--even as he felt the finger getting thicker in his mouth.

Theron lowered his huge glutes down on Marc’s steel-pipe of a cock. He grabbed the bottle of lube from the nightstand and slathered his melon-sized glutes with it, then sliming the bodybuilder’s bouncing cock with a meaty fist.

“O-OW,” Marc cried out. “Careful, bud, that’s a… aahhh, o-oh… fuck, hell of a fucking grip…” Marc grabbed handfuls of the bedsheets as Theron slid all 10 inches of Marc’s cock between his now enormous glutes. “OH FAAAAAAAAACK!” Marc cried out, throwing his head back as Theron finally lowered down, full of Marc to the hilt.

Theron knew exactly how to squeeze his ass as he bobbed up and down on Marc’s massive cock. As he did so, his body bloomed with even more muscle, now eclipsing even Marc’s enormous frame. While he inflated with muscle, Marc’s cock (a decent 7 inches, useless on a dedicated bottom) stayed the same size, looking even smaller on the now gargantuan man. It slapped against Theron’s thickened abdomen, spattering him with pre-cum as he grunted and moaned. His voice got deeper as he blew up, and when he finally let out a deep, bovine growl, Marc’s ecstasy-sealed eyes snapped open.

“What the FUCK?” Marc gasped as he looked up at the gigantic freak above him. If it weren’t for Theron’s beautiful visage, he would have looked like a complete stranger. But now, that pretty face was surrounded by massive slabs of muscle. As Theron rode Marc’s big dick like a champion, the bodybuilder just squealed and moaned, despite his shock at the size of the man on top of him. Until he came, Marc was unfortunately along for the ride… that is, until he heard the legs of his bed collapse.

“Yeah, big boy, you like how I ride that big dick?” groaned an unfamiliar bass voice.

“Hey… HEY!” Marc yelled as Theron’s now 300 pound body started to crush poor Marc’s legs. Had it not been for the bodybuilder’s overdeveloped quads, his legs would have snapped. But it was only a matter of time as Theron continued to get bigger, his glutes clenching Marc’s nearly pulverized penis with more and more force with every bounce.

“Wait… wait, oh god… oh god, you’re too big! You’re too heavy!” the powerfully built man squealed, his once dopey confident tone replaced by a desperate panic.

Theron, too fucked up to clearly perceive anything beyond the incredible cock fucking him, just leaned forward. He intended to kiss the huge stud beneath him, but instead, his gigantic pecs pressed over Marc’s face, muffling his cries. Theron just moaned at the vibrations beneath his pecs, loving the hot breath and the feeling of Marc struggling. God, this was the best fuck of his life!

Theron finally roared, nearly pulverizing Marc’s dick as he shot his load all over his ludicrously thick midsection. Marc screamed--he came, too, but his ecstasy was mixed with fear that his dick would get ripped off.

As Theron rose from the bed, his hypermuscular ass refused to release. Marc rose with Theron, squealing to be released. Theron was confused at first, until he finally unclenched. Marc’s dick slid out with a loud POP sound.

“What… what the fuck… are you, you freak?” Marc said, crawling away from Theron in fear.

Theron rose to his feet, confused at his wide stance. He looked down at legs so wide that his feet were nearly six feet apart. He lifted arms as big as Marc’s legs. His gigantic pecs completely obscured his view of the floor. He tried to look at himself in the mirror him but his back and shoulders were so thick with powerful muscles that he couldn’t turn without rotating his whole body.

When Theron finally did look in the mirror, he was horrified by the grotesque mass of muscles in the mirror. He could still feel Marc’s load dripping from his ass, could see it dribbling down the freakish legs of the beast in the mirror. He recognized his face, but the rest of him looked like an insane photoshop.

“What… how…” Theron said, undeniably aroused by the feeling of POWER throbbing through his titanic frame… and the fact that the huge man who had brought him home now looked positively puny in comparison. And as his arousal rose, his body continued to get bigger.

“Get the fuck out of here!” Marc screamed again.

THeron was confused. There was no way he could fit into his scattered clothes now. He took a step that made the whole room shake. Another, and the bottle of whiskey on the bureau tumbled to the floor. Just moving made the building rumble like an earthquake!

The floor beneath Theron’s feet started to crack. He took a step and the floor caved in slightly. He could see that he was still blowing bigger and bigger in the mirror, become nearly immobilized by so much muscle crammed onto a frame that only expanded out, not up. Another step and Theron felt the floor give way.

“Get the fuck OUT!” Marc shouted. Theron had no idea what to do. He turned toward the nearby window and hurled himself toward it, crashing through like a wrecking ball and hurtling toward the ground. He landed on a car--pulverizing it without suffering a scratch himself.

There were people out on this street! The fact that he was now a mountain of muscle attracted nearly as much attention as the fact that he was completely naked did. He could barely move, only a hastened waddle, as he struggled to get out of sight. There were people around with cameras, snapping photos. He had to get away!

Down the street, when he was sure he was alone (a difficult thing to check when you can’t turn your neck!) he ducked into an alley wide enough to accommodate his huge body. At the end, he crouched.

“How is this… how is this possible?” he asked in a voice that seemed unrecognizably deep and gravelly. Amidst the garbage strewn across the alley was a broken mirror. He gazed into the largest piece of it and examined his monstrous body.

“Am I… am I getting smaller?” he asked as he watched his bulk starting to evaporate. A light cut through the haze in his brain. His dick was entirely flaccid, and now his body seemed to be responding in kind. “I got hard… got turned on… and got big,” he theorized. Meanwhile, nearly destroying Marc’s apartment was somewhat like a cold shower. He breathed a sigh of relief as he saw his body regain more human (albeit still massive) dimensions.

“Fuck, I need clothes,” he said as he shrank down to the size of a superhero. He looked around the alley, only finding an old set of curtains in the dumpster. “This will have to do,” he said, draping it around his body and tying it at the waist. He was still about fifty pounds heavier than his usual svelte form, but the fact that he was no longer an enormous freak of nature helped him relax.

“Just got to get… home…” he said. The alley cut through to another street. He hustled down it, tripping over the curtains dragging between his legs. Just before he got to the street, a back door flew open. Theron stood, shocked, as a well-built man (bigger than Theron was at that moment, although Theron had no idea how long that would last), poked his head out.

“Shit, I thought I heard someone out here,” the built man in a skin-tight BOUNCER t-shirt said. He tapped the headset in his ear. “Boss, I found another one of the dancers. Out here getting high or something. You want me to bring him in?”

“Dancer?” Theron said, his weed-addled brain unable to think of a response fast enough.

“Come with me, stud,” the bouncer said, grabbing Theron by the arm. “Time to earn all that money we’re paying for you.” He dragged Theron inside.

Theron glanced around in a panic as he was dragged through the back of what seemed to be some sort of nightclub. He dodged passing barbacks and other scantily clad, muscular men as the bouncer finally dragged him onto a dancefloor.

“There you go, prettyboy,” the bouncer said, pushing Theron toward a box. “Your costume sucks, but the fact that your dick’s gonna flop around will be a major bonus. Get up there! Dance!”

Theron, bewildered by the turn of events, reluctantly climbed atop the box and started dancing. It was a gay bar, and Theron could see several other well-built men dancing on gogo boxes as house music threatened to deafen him. A crowd of men gathered around him, cheering him on.

Theron couldn’t object to the attention. It seemed to soothe his confusion, so he gyrated his hips and flexed his newfound muscles as the men hungrily reached up and fondled his big legs, hooting and hollering as his dick flopped around.

And as Theron became aroused, he began to swell.

The crowd noticed, as well. One of the admirers reached out and pumped Theron’s cock, causing his hips to buck… and his body to blow up like a balloon.

It wasn’t long until they enclave of thirsty men had blown Theron up to well over 300 pounds again. The box creaked before finally giving way under his weight. Theron collapsed onto his ass, massive limbs flailing as much as they could.

The horny men crowded the inflating muscleman, rubbing his stretching flesh, tweaking his nipples, licking the cascading sweat off his back. Theron had never been so aroused in his life… and soon he blew up past the four hundred pound mark.

Sadly for Theron, his height never increased, his head, hands and feet never enlarging as he continued to grow larger and larger. It wasn’t long before Theron found himself an immobile pile of turgid sweaty flesh, glistening in the neon lights, as the men started to climb onto his blimped out muscle bud, fucking the rigids between each hyperdeveloped muscle and causing Theron to swell up even more.