Midnight fill-up

It was nearly midnight and Melanie could not sleep at all. It wasn’t the first time it happened, but now it was starting to really screw with her mind. Her massive, swollen breasts were pushing her libido to completely new heights, barely allowing her to think about anything other than growing them bigger and getting some dick afterwards. Her breasts were already the size of beach balls, but Melanie wasn’t even close to being satisfied with them. She also yearned for a big fat cock to fill her hungry pussy and tight ass and help her relax. She ran her small fingers across her naughty womanhood, playing with it and sticking her fingers in and out, aching for an orgasmic release. Her hand started moving faster as she got deeper into her lust-filled haze. Then Melanie heard the door to her room opening wide and Dr. Kasper and two of his assistants walking in. Her head got buried further in perverted desire as she saw the two giant tanks the two men wearing hazmat-like suits were carrying. She knew what that meant, but she didn’t realize it was already the time. She let go of her wet pussy and went back to caressing her enormous breasts and throbbing nipples, almost like she was preparing them for the procedure. "How are you holding up, Melanie? Ready for the next fill-up?" Dr. Kasper said with a cold expression. “Of course, doctor. You know me, always ready to have my cute boobies pumped bigger!” she said with a childlike grin emanating from her beautiful face. “I decided to make the dosage 6 gallons for today, up from the previous 4. Is that ok with you?" the doctor asked. “Of course, doc! My girls are more than happy to get pumped up to their absolute limit. At least until they get used to the new size and are able to take even more…” Melanie said as she arched her back and bounced her boobs a few times in front of the doctor. In the next minute or so, the two tanks of BRST-5000 were set up by the sides of Melanie’s bed by the assistants and then two large tubes got inserted deep into Melanie's large nipples. The girl moaned ecstatically, biting her lips and moving her small mouth silently for a few seconds before she managed to speak. "Do it, doc! I want this... so fucking bad!! I want you to pump my tits bigger! Make them larger than ever!" she said between deep moans as she tried to engulf her tits with her slender arms.

The doctor nodded to his men and they turned on the pumps attached to the tanks. The serum started getting pumped into Melanie's already huge tits, visibly inflating them as her whole body shook from the unreal pleasure she was experiencing. Her thighs soon got covered in abundant pussy juice, the inevitable outcome of such glorious stimulation. Melanie moaned as her tits got bigger before her very eyes, greedily confiscating more and more of her vision with every passing second. Dr Kasper watched his patient’s breasts go from really huge to absolutely gigantic in a matter of minutes, overseeing the entire process with cold calculated eyes, noting how Melanie's rubber-like flesh expanded very easily, which meant that he had done a good job on the previous procedures. Counting down the minutes until the full absorption of the enhancement formula, the good doctor knelt in front of the overstimulated girl’s crotch and slit nearly his entire hand inside her cunt, leaving only his index finger outside. “Oh fuuuuck!!” Melanie moaned so deep her entire body shook like it was being filled with liquid fire. Huge veins appeared all over her gigantic chest balloons, some of them even the size of her pinkie. They continued to grow bigger and rounder, stretching her skin more and more, fighting to contain the enormous amount of serum that was being pumped into the. The tits-obsessed girl kept moaning ecstatically the whole time, not wanting this amazing feeling to ever end. She was absolutely addicted to the feeling of her boobs growing to ridiculous proportions. She dreamt of making every single woman on Earth feel flat-chested when putting her tits next to Melanie’s gigantic mounds of fake tit-flesh. The doctor started moving his hand in and out of her pussy with slow and steady thrusts, knowing that she would benefit from some additional stimulation until the serum infusion was complete. Melanie's breathing steadied as soon as she started feeling pleasure.  "You’re the best, doc! You’re making my boobies so big and beautiful!! I absolutely love them!!" she said between deep moans as she kept losing more and more of her already limited vision. It appeared that of the serum went directly into her nipples, making them longer and fatter, now looking more than three times their original size. Her areolas expanded too, becoming wider and puffier, struggling to keep up with the rapid growth of the massive breasts they were attached to. Dr. Kasper kept fucking Melanie’s pussy, but now he did so with deeper and more powerful thrusts, the sheer amount of pussy juice making him realize that her entire body was being sexually stimulated by the massive influx of BRST-5000 filling her up.


“Doctor… I think… I’m gonna… OOOHHH FUUUUUUUUCK!! I’M CUMIIIIIIIIIING!!” Melanie said as her pupils dilated and her pussy released a powerful jet of female juice directly into Dr. Kasper’s face, soaking both his glasses and his nearly bald head. This orgasmic release was followed by two more, just as intense as the first one. Even though she really enjoyed how the good doc took care of her hungry pussy, Melanie’s orgasms were mostly the result of getting her tits to such an absurd size they barely resembled parts of a female’s body anymore. The last few moments of her midnight breast fill-up were by far the most intense and most pleasurable and at the end of it all, the doctor was completely covered in her abundant pussy juice. “Oh fuck!! That felt amazing!!” she said as she regained her senses and noticed that the tanks were completely empty. “I’m glad you enjoyed that, Melanie. Now we should start with the resistance test. Judging by the texture and consistency, your breasts should be able to withstand plenty of force.” the doc said as he stood up and examined the girl’s humongous tits. “Oh yes!! You know I love that part! Almost as much as I love getting my boobs pumped full of your special serum!” Melanie giggled like a schoolgirl. “We should start then!” Dr. Kasper said as he snapped his fingers towards his two assistants. All of them started taking their clothes off while Melanie wondered if she was still able to get up now that her boobs were so much bigger and heavier than before. Would she be able to walk normally or would she need some of those expensive spinal-strengthening implants in her back in order to carry her boobs around? Those are the kind of questions you begin asking yourself when you have more than ten gallons of saline-like serum pumped into each one of your boobs. Melanie’s chest was freakishly huge, an absolute record in terms of sheer size and the only thing on her mind was growing them even bigger. Until then, however, her beautiful babies had to take part in Dr. Kasper’s resistance test, also known as a "stress test".

As she turned her eyes away from her majestic boobs for a few seconds, she saw the three men standing naked before her. Strangely enough, Melanie didn’t notice how big and muscled the two assistants were when they wore their bulky yellow suits, but now that she took a better look at them, she was beyond impressed. They were tall and decently handsome, as well as young, probably in their late 20s. They had wide, thick chests that bulged with hard meat and deep ridges, strong arms sporting massive biceps and triceps, as well as massive round shoulders. Their legs were absolutely astonishing, with meaty quads and gorgeous calves that were absolutely packed with firm, hefty slabs of hard muscle. Their backs were wide and incredibly thick as well, while their lower bodies sported mind-numbingly shredded sets of hulking 8-packs that flexed whenever they breathed. Their waists were significantly thinner than their upper bodies, giving them a beautiful “V” shape, while their asses were both hard and round, packed with hard male beef just like the rest of them. They both looked extremely confident about their amazing, hulking builds, and that confidence was easy to read on their faces. To top it all off, these guys had the most ridiculously big dongs Melanie had ever seen. Both of them were about 12 inches in length, with balls the size of ripe oranges, and they were still completely soft. She could only imagine how utterly massive they would get once fully erect. The true mystery was how these superior male specimens ended up working for a strange scientist in some secluded facility instead of putting themselves out there for the whole world to see. It actually didn’t matter to her that much how they got there, only that they were there and were ready to rock her world with their amazing bodies and huge dicks.

Dr Kasper’s body was nothing to write home about and his cock wasn’t anything special either. But he had just the solution for that. She grabbed a small syringe from his lab coat and gently inserted it into the side of his neck. In only a matter of seconds, the good doctor’s cock expanded to the point where he was pretty now much the same size as the two studs, even though it was only temporary. “Wow, doc! You always have an ace up your sleeve!” Melanie said as she bit her upper lip when witnessing the doc’s majestic new dong. He didn’t respond and instead he gestured to the assistants to take up their positions next to Melanie. Their fat dicks got hard almost instantly, the sheer size and form of the girl’s humongous tits activating the primal parts in their manly brains. Melanie watched as one stud got closer to her tiny head, his hard-earned muscles bulging and throbbing graciously as he walked, while his balls dangled between his massive legs like the fat baby-makers any woman could hope to one day have in her life. She pushed her lips against the underside of his cockhead, admiring just how huge his dick was. She kissed and sucked on his crown, making it throb more violently by the second. She then opened her mouth wide and engulfed his cock in her hot, soaking maw. She bulged her left cheek around his monster cock and bobbed her head up and down, slurping noisily, wringing her lips around his throbbing meat. It felt so good he started pushing even further, loosening her jaw so his cock could pass neatly into the tight, rippling sleeve of her gullet. “Oh, fuck…” the big man murmured, his legs shaking as Melanie swallowed his dick inch by inch. She didn’t stop until her lips squished against the hilt of his cock, and her tongue could slither across the surface of his big, veiny balls. She gargled sweetly, never breaking eye contact, letting him know how much she enjoyed sucking him off. She began to pump her back and forth, blowing the monster dick with supreme dedication, devouring his thick shaft and making him cry out in pleasure. He put his hands on her humongous boobs and started caressing them. They felt incredible under his meaty fingers, so soft and yet so firm, so… perfect. That’s when he had an idea. He grabbed her boobs firmly and decided to use them for leverage as he fucked the huge-titted whore’s throat.

Suddenly, Melanie felt a strange warmth surrounding her puffy nipples, and her eyes opened wide. She couldn’t see them, but she knew that it was the doc and the other stud suckling on her fat nipples. She groaned loudly as the stud continued to fuck her throat. Her nipples felt… amazing, maybe ten times better than before. She could feel them hardening even more, and she could also feel the stud on the left working her nipple with his meaty tongue, flicking against the opening like a hungry infant. It was incredibly arousing and so sexually stimulating she could feel her pussy leaking a small river between her legs out of sheer excitement. The stud and the doc kept sucking and probing her nipples until she suddenly felt one tongue pop straight into her massive nipple. Melanie screamed in shock, but also because of the sheer pleasure she was experiencing. That’s when the stud on the left decided to take things further. He pushed deeper and deeper into the girl’s nipple until it was slowly able to start tongue-fucking it. The doc followed his assistant’s lead and started moving his tongue in and out of Melanie’s tit too. It felt so good to have her tits worshipped and penetrated like this. She could only moan and groan in lewd bliss as the two men kept on pleasuring her tits while the other stud kept fucking her slutty throat. After a couple more minutes, Melanie’s eyes narrowed like a predator’s as she felt the muscled stud directly above her head finally cum. He got balls deep inside her gullet, moaning out loudly as a hot rush of thick semen gushed into her belly. “Oh fuck!! Take it all, bitch!” he said as he filled her up, feeding her a nutritious midnight snack as she kept her lips sealed around the base of his cock, not wanting to lose a single drop of precious cum. His legs were shaking after the thunderous release and he kept using the girl’s gigantic boobs in order to keep his balance. He then pushed back his hips and slowly removed his fat cock from her hungry mouth, but the girl kept moving her lips around his still throbbing cockhead, wanting to make sure he absorbed every last drop of cum from it. “So tasty! I love it!” Melanie said with a lewd grin as she watched the muscular stud leave for the opposite end of her body. She watched his muscular legs and wide back ripple with raw power as he walked, her mind completely addicted to the intense masculinity he was putting on display. His ass was so muscular she could swear she could hear his asscheeks clap as he walked, although it was probably her perverted brain making her hear things.

She arched her back and pushed her chest forward as much as she could, trying to drive her thick nipples deeper into the other boys’ mouths. She could feel their rock-hard erections stabbing her humongous tits, with so much blood pumped into them they most certainly weren’t able to think about anything other than the giant fleshy orbs in front of them anymore. On the third end, Melanie could feel the musclebound stud grabbing her small feet with his strong hands and spreading her legs apart while also shamelessly resting his massive cock on her tummy. He licked her toes and kissed her feet first, worshipping her lower body like the Goddess of Fake Tits she now was. Suddenly, Melanie felt the tongue-fucking action stop as the doc and the stud pulled out of her tit-holes without any explanation. The girl groaned in dismay, appalled at how empty and unloved her nipples now felt. I tried to thrust her chest forward to the best of her ability, trying to entice them to continue assaulting her needy nipples with their expert tongues. The doc then brought his hands up and began to caress her right breast with fatherly love, running his fingers around her nipple and teasingly sliding a finger in and out of it. The girl gasped, her green eyes closing with pleasure. It felt so good to be touched like this, to have her finger penetrated gently by one finger…then by two, and eventually by three at the same time. The muscled stud did the same to the other huge breast, getting her tight tit-hole ready for the “real” stress test. Melanie groaned like a cougar as her tits felt absolutely heavenly in the hands of the two men.  Then suddenly, almost at the same time, her fat nipples were forced open by something much bigger than a few fingers, stretching them wide open like they were regular pleasure holes. Melanie screamed, her eyes opening wide as she looked at what was pushing into her poor nipples. The doc and the stud had nearly half the length of their huge dicks pushed into her tits, their expressions blissful at the intense pleasure they got as a result. This was nothing like the previous tests. The doc would usually use small plugs and vibrators to test the resistance of her inflated tits before. But now that they got to such an absurd size, it was only natural to increase the intensity of the test too. “OH FUCK!! YOU DICKS ARE IN MY TITS!! IT HURTS SO MUCH!! MY POOR NIPPLES ARE BEING STRETCHED OUT SO BADLY!!” Melanie screamed as two men moved their hips forward, pushing a few additional nipples into her fake balloons. The pain was beyond intense and in suddenly doubled when both men inserted their large shlongs balls-deep into the girl's massive tits. “FUUUUUCK!!” she screamed as she felt their fat balls slamming against her tit-flesh. They started moving slowly in and out, fucking the greedy girl’s tits like they would do any other hole. ”OH FUCK!! I CAN’T BELIEVE THIS!! YOU’RE FUCKING MY TITS!! AND IT FEELS… AMAZ…” she moaned, but didn’t finish her sentence because of the third man’s dick that got brutally rammed into her pussy. She had never felt so many dicks being pumped in and out of her body like this. Her tits and pussy felt amazing around the stud’s giant cocks. She could feel their hard muscular bodies against hers as they fucked, ramming in and out of her like there was no tomorrow. It was like all three of them had a single shared mind, one pulling out while the other pushed in, making sure that she always had at least one fat cock deep inside one of her holes. The alternating strokes quickly turned the initial pain into deep shameful pleasurable. Her nipples quivered, and her stretched-out cunt leaked pre-cum onto the bed like a waterfall. She tried to take a look at the stud fucking her hungry pussy, but because of the mind-breaking size of her mammaries she could only see his head and meaty traps, his face filled with lust as he pumped in and out of her like a wild beast. She used her small hands to push her fat tits against the two men fucking them, actively trying to pump the cocks deeper into them. Her body was pretty much sandwiched between theirs and the giant mounds of tit-meat. She shivered in pleasure and asked them again and again to fuck her slutty holes harder. That was the whole purpose of the test, after all, to see if her tits would break under intense pressure. Melanie knew that her big girls could take it and that’s why she wanted them to try harder to break them. “All right, boys, enough holding back! Let’s put these tits to the test for real!” Dr. Kasper said to the other men as she slapped Melanie’s tit twice, leaving a red mark on its surface. The boob goddess’s eyes rolled back in pleasure as they began to slam their giant dicks into her with unrelenting force, fucking her harder and harder with every thrust. A few minutes later, she was a quivering mess, drool and pussy juice pooling on the bed as she moaned loudly. She never could have imagined that having her nipples fucked could feel this good. She never wanted it to stop.

An entire hour had passed and the men just kept at it, fucking Melanie’s tits with everything they got. Her nipples felt better than pussies or assholes, so much tighter and smoother and so incredibly welcoming. It was a miracle none of them came for such a long time. On the other hand, their balls had become absolutely bloated with fresh cum as a result of the intense milking the overblown boobs so generously provided. Melanie came dozens of times from both her boobs and pussy, her brain going numb and then snapping back to reality many times over. The three hung men thrust harder than ever now, their bodies now completely covered with sweat as they were so close to a massive release. If only Melanie could those hunky boys’ bodies now, their beautiful muscles so shiny and flexed after a whole hour of pumping their hard rods into her. “FUCK! FUCK FUCK!! MORE!! GIVE ME MORE!!” she cried as the pleasure just kept on building all over her battered tits and cunt. Her toes curled high in the air, and she pushed her hands through her hair as she came hard yet again around the assistant’s hammering cock. But this time, it wasn’t just her that came with the intensity of a bomb being detonated. Clenching her pussy tight as the massive release invaded her fragile bimbo brain, she screamed again, letting the boys know that she was cumming again and was ready to help empty their balls too. With a symphony of deep manly grunts, all of them rammed their massive erections up to the hilt into her tits and pussy and exploded inside her. They blasted the insides of her breasts with their abundant seed, feeling their balls deflate in real-time as they released so much thick jizz it felt like they were filling up a car with gas. Melanie watched as her already monstrous boobs expanded even more, but this time it felt completely different. Apparently, the dense cum the studs provided was mixing up nicely with the serum already sloshing inside and it only fueled her boob growth further. Melanie could do little but moan and slobber as they filled her up so much that now, on top of even freakier tits than she could have imagined, she now had a bloated cum-belly too. She simply lost count of how many times she came during the thunderous flood of cum that entered her body and seemed to have no end. But, just as with everything, it did have an end. When they were finally done, the three men slowly pulled out of her and admired her new size. Once they were completely out, the cum inside immediately began to drip onto the floor. Melanie snapped out of her orgasmic bliss, feeling that her titanic tits were slowly but surely losing some of their precious size. She would never allow that to happen, under any circumstances. She groaned like she was giving birth and a few seconds later managed to close her loose nipples shut by sheer force of will and complete control over her body’s functions. “That was very good, Melanie! You passed the resistance test with flying colors!” the doctor said casually as he adjusted his glasses. Melanie grinned, but she was visibly struggling to keep her nipples shut. It was only a matter of time however until she mastered the true potential of her new fake balloons. “Now then, we’ll come back in the morning with a new test for you. I think you’re ready for larger sizes.” the doc said as he started gesturing towards his assistants and they all started walking towards the door. Melanie could barely wait for the morning to come.