Before he could even start work on finding a way to ease his growth, he immediately feels a slight strain from down below. A strain that was starting to stretch the spandex he was wearing to it's limit. "What in heavens name is this?", he winces, feeling the pain down below becoming even more prominent. "This...feeling... I can't...I can't control it...!" It wasn't long before his underclothing gets ripped apart at the groin area, revealing his own male extremities in full form. Beast couldn't help but blush at the surprising display, enough to show a little red under the blue fur on his cheeks. He knew this formula would grow everything, but never expected this from his own, well, malehood. "My... Ahem, I guess it is a good thing no one else is around to see this...", he replies calmly, gripping his tool and trying his best to hide it.
Much to his surprise, that wasn't the end of it. He could feel his own manhood swell up right in his meaty palms, until it was at full erection. "Oh...Oh dear... Hng...!" His beastly tool begins throbbing little by little in his hands, sending waves of stunning pleasure throughout Dr. McCoy's frame. The last thing he needed was to feel turned on but the effects of the potion were showing otherwise. His length soon begins to chub with each vibration, swelling futher with each beat as it fills out his gargantuan palms even more. It only became harder to hold in his seed as the strapping figure was about ready to burst. "No...! Don't...! Not in my lab...!" His hands can feel his jutting meat contract and pulsate even more vigorously, enough to feel even the blood rushing through the veins on his lengthening tool as his slit was starting to drip with pre. He could feel his body starting to recline as if it were ready to give in to his own desires.
With added strength, Beast uses his own newfound strength to hold his impending climax down. It seemed imminent as he was starting to spray mere shots of seed out and onto the large screen before him. "Nnno...!! Not on my equipment...!!" He gives it one more go, clenching his fists around his enraging member even harder than he ever could! The feeling was was both excruciating but orgasmic at the same time. Dr. McCoy had never felt such intensive waves of pain and pleasure in all his life! With one last tug, Dr. McCoy could finally feel his hefty load start to ease up and dwindle down his burgeoned length, thus leaving the sinewy beast to pant heavily as he falls to his knees. His intense feelings of gratification may have subsided but he takes no chances in it happening again, and grips his softened bishop in one hand for safe measure.
"Goodness... It's nice I managed to stop that from happening, but...", he stares blankly at his empty, gorilla-sized hand, "...what is this...other feeling I'm getting...?" Before he knew it, his palm was beginning to grow even thicker right before him! "What in heaven's name...!?" Cables of veins start to writhe themselves up McCoy's wrist and up to his forearm, making the bump swell immensely as it tightens his forearm muscles even more. The veins then sprial around his bicep and tricep, adding a surge of mass into the already overgrown tendons. His shoulder soon receives its addition amount of stimulating growth as well. "I-I, I'm growing again...!" Before he could say any more, his neck muscles begin convulsing his throat, gaining even more beef as his grits teeth from the sensation. "My...NECK..!!", he roars, his voice sounding more masculine than before.
His unaffected shoulder muscles blast themselves out to match his other, filling it with much meat and power as the veins became even more embossed. The same effect takes place down his large bicep, his rippling tricep and his hefty forearm. The last was his hand, which begins to make popping noises as fingers begin to extend a bit as his hand swells impressively, and is able to wrap itself more around his leaking length. His hefty pecs bulge themselves out further, his own chin surprisingly able to feel them swell as seconds fly by. His abdominals start to increase with added mass from the top row of muscles down, making the muscles look even more rigid than ever. His monumental thighs and hamstrings begin pushing themselves against each other ever more, that if his coconut-sized balls were caught between them they may have been crushed. His calves were the next to become part of the beastly, muscular giant as they fill out enough that he's practically able to feel them rubbing against each other if he were merely to stand. The last were his thick feet, which filled themselves up like water filling a balloon while keeping the sinewy muscle and cords of veins in view, and grew enough inches to make it easy for McCoy to walk.
Although Beast's muscles were pulsating like crazy, his intense growth seems to have come to a stop, leaving the blue monster heaving while he takes a moment to catch his breath. This sudden amount of added mass may have made him bigger, and stronger, he's still pretty mobile, gaining more height in turn to even his body out so he could move and flex his body just like before. His head is on the smaller side though compared to his entire body. "U-...Unbelievable...", he gawks. He could see he was standing even taller than he originally was, compared to when he stood before in front of his computer. McCoy even took a moment of thought to why he had grown so suddenly. "As...difficult as this may sound, is seems holding my...fluid, in has accelerated my grown even more." He holds an arm in front of his head, seeing the muscle that was his bicep being bigger than his own head. "Incredible... My body...it's enormous!" He immediately gave his muscles a few flexes. Nothing too big, but enough to get a feel of how much he had grown since. Plus his immense physique was enough to put 5 Hulks to shame. He did one where he lifts and flexes his arm, another where he extends one leg outwards while flexing his arm downwards, and even gives his massive body a most muscular pose, watching his muscles ripple and striate as they begin flexing against each other. "My... This is indeed something." He takes a look at the vial he had just drank, which was sitting on a table. "Though, I really don't think this is something that would be accepted by the team."
Before the beast could think of anything else, he suddenly feels an intense sensation running down below. He didn't realize it, but he was beginning to get aroused, watching widely as his flaccid member started to become very erect! Not only that, but it was beginning to quiver and fluctuate as it was earning its own dose of growth. "N-no! Not again!" He cups the head with both his hands, though he could feel his tool lengthening and growing right under his fingers. He watched helplessly as his fingers were beginning to be pushed out even further, revealing more and more flesh as it slowly grew on. He tries his best to keep his burgeoning manhood from painting his entire lab white, but his own sexual pleasure was starting to get the better of him. Clenching and holding his dick tight only felt like wonders instead of pain. His member began throbbing harder than he could ever imagine, in turn making it feel like he was pumping rather than hindering himself. The veins around his elongated meat began snaking to the top in small, timely beats as he could just feel his climax underway. McCoy grits his teeth, trying his hardest to keep his lab clean and stick-free as he begins yelling inside his head. "Come on McCoy! Don't let his get the better of you! Give it one last push!" With that, he manages to do his body the same. He flexes his arms with enough power to rip a metal girder, making his biceps swell and expand to proportions you would only see on a cartoon. He pulls his throbbing meat in and widens his rippling back to wrap his immense arms around his thick shaft, adding his plump pecs to the equation for some added help.
As fortunate as it is, his fate seemed neigh, as he could feel his juice only start to rush towards the surface and fill his massive rager even more! "NGH...! N-no good...!
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