By now, Max knew a lot of things about Hazel. She liked Monster Energy and Hot Cheetos, her top-searched porn categories were "miniguy" and "scat," and she farted in her sleep—a lot. He also knew that when she was in the mood to celebrate, that meant one thing and one thing only. Back in the giant, buck-toothed sophomore's clutches, watching her carelessly stomping away from the wreckage of House Proserpina and toward the center of campus, he could only hope that all of his classmates had the common sense to escape while they still could.

"Sorry, guys," giggled Hazel, bringing her foot down on top of several members of the football team—including one who'd spurned her advances the previous semester. "Big girl, comin' through!"

With one hand cradling her assistant and the other circling her clit, the huge, horny giantess was having the time of her life. Not only had her new serum worked like a charm, but she'd also managed to destroy all the records of her research in the process of growing—meaning that it was going to be very, very difficult for anyone else to get her back to normal. Now, the only thing on her mind was finding a spot to settle down for a nice, long celebratory goon sesh—and when she laid her eyes on the school's science building, she knew it was the perfect place to start. 

Thanks to several lavish alumni donations, the Math & Science Center was one of the biggest and most well-appointed buildings at Ventus. Following its latest renovation, the vast reinforced concrete structure had been deemed "100% earthquake-proof" by California's highest civic authorities, and had won several prestigious architecture awards for its innovative ventilation system. This made it a prime destination for students and faculty members during natural disasters and emergencies—and based on the several hundred people who had already crowded inside this afternoon, today was no different.

For Hazel, the MSC had always held a unique significance as the first place she'd ever jacked off at Ventus. Halfway through her very first class of freshman year, unable to contain her desires for a full hour around so many hot young people her age, she'd rushed into the nearest bathroom to rub one out and had ended up spending the rest in the afternoon in there on her phone. Now, she could think of no better spot to commemorate her newfound status as the biggest person on campus—if not the whole world.

Lumbering over to the MSC and smirking at all the people pouring in, she turned around and settled her huge rump down on top, flattening half of the built-in roof deck — and everyone unlucky enough to be on it — in one fell swoop. For those who'd made it into the building, the impact of the pear-shaped giantess's ass rivaled any earthquake—and what happened next was even worse.

BBBBRRRRRAAAAAAAAAAAPPPPPPPP

Because Hazel's butt was settled squarely over the MSC's primary air vents, most of her latest fart was absorbed by the building's ventilation system. While the people inside were counting on this system to protect them from Hazel's various odors, the telltale eggy smell that began wafting down from every duct shortly after the blast gave them plenty of cause for concern—but only a few were smart enough to flee out the back exit before her weapons-grade digestive system unleashed a second round.

BBBBBBBRRRRRRRAAAAAAAAAAAAAPPPPPPPPPPP

Hazel's next fart was even less forgiving—longer, louder and smellier than the last, and even more destructive. Rippling through the already-weakened ductwork of the MSC and pushing all 1000 of the vent system's HEPA filters to the edge of failure, the giant gooner's rancid gas invaded every inch of the building's interior, making it abundantly clear to those within that their safety was thoroughly compromised. Unfortunately, the giant depraved young woman behind it all was only just getting started.

BBBBBBBBBRRRRRRRRRAAAAAAAAAAAAAAAPPPPPPPPPPPPP

With yet another thunderous fart, the bottom-heavy giantess put the MSC's ventilation system out of commission for good. Inside, with nothing to hold back the devastating effects of Hazel's gas, the temperature and humidity both spiked. Trapped in a hotbox of thick, sulfuric air, hundreds of students and faculty members were left coughing and gagging on the floor—and several dozen were already unconscious. 

"Whew!" Hazel snorted, waving a hand in front of her face. "Man, that serum really did a number on my stomach!"

Down in her hand, mostly focused on his own survival at this point, Max forced a laugh. "Y-yeah... L-listen, uh, Hazel... it looks like there's a lot of people down there. Maybe you should get off and go somewhere else?"

"What was that, miniguy?" Hazel scowled—trying to think of why her tiny assistant's words sounded so familiar. "Oh! You're right! I did come over here to get off, didn't I?" 

"Poor choice of words," Max groaned, shaking his head. "I meant-"

"Yeah, yeah, yeah," giggled Hazel, already going to down on her clit again with her free hand. "I know what you meant. Why don't you get back there and help me out?"

Before Max could protest this offer, he found himself being dragged around to the buck-toothed giantess's massive rump. After half an hour back at normal size, blissfully free from the confines of Hazel's perpetually filthy ass, it was all he could do to keep from bursting into tears as she returned him to the crevice that had been his prison since last Saturday—and the only thing to console him was the unsettling embrace of her puckering asshole.

"Mmm," moaned Hazel, securing Max between her cheeks and then bringing her other hand up to her nipple. "That's more like it."

With her assistant back in his usual workspace, the giant gooner got back to doing what she did best. The sheer exhilaration of being so big and powerful was already getting her wetter than any porn ever had—and even in the absence of her usual array of monitors and hentai, she was quickly approaching her biggest climax in recent memory. 

PRRRRTTTTTTTTT

As her whole body shook in anticipation, another absent-minded fart slipped out of her huge, blubbery butt. For Max, it was just as bad as all the others he'd ever endured—but for those still trapped in the MSC, lacking the kind of tolerance the poor freshman had built up over the past week, it was even worse. By now, the majority of the people in the building were out cold, and the few who remained conscious were lost in a mix of panic and prayer—some to various gods, and others to Hazel herself.

Feeling a familiar quiver in Hazel's cheeks, Max knew it was only a matter of time before she came. Based on the worrisome creaks and groans of the structure beneath his giant captor's rump, it seemed like the whole MSC was reaching a similar breaking point. While the building had been built to withstand every known natural disaster, its engineers had clearly failed to consider Hazel Berry—and the closer the big, horny sophomore got to completion, the more she seemed to be testing the structure's limits.

BBBBRRRRRRTTTTTTTTTTTT

Blasting another careless fart into her tiny assistant's face, she couldn't help smiling at the clear devastation her rampage had already wrought. Her path over to the MSC from Proserpina was punctuated with several dozen massive footprints — most dotted with unlucky classmates, bicycles and cars — and she could already make out the faint outline of helicopters and emergency vehicles in the distance. So far, being 200 feet tall was everything she'd been hoping for and more. The only thing that would make this day better would be bringing her current goon sesh to a fittingly titanic conclusion.

Still furiously rubbing her clit with one hand and alternating tweaking her nipples with the other, the bottom-heavy giantess began grinding her hips into the building with newfound intensity, quickly wearing a butt-shaped crater into the top layer of sagging steel and reinforced concrete. Totally lost in the throes of pleasure, she had little regard for the people below her. Right now, as far as she was concerned, collateral damage was just part of the fun. 

PPPBBLBLLBBLBLBLLLBRRRRRRRRRTTTTTTTTTTTT

If the crushing pressure of Hazel's thousand-ton rump was the thing that brought the MSC's roof to the brink of failure, a final absent-minded fart was the straw that broke the camel's back. As the complicated network of over-engineered materials that held the structure together gave way, the 200-foot-tall sophomore was sent tumbling down butt-first into the wreckage of her first campus goon spot—the first casualty of her powerful new form, and an unintentional monument to her newfound godlike power.

"Wow," panted Hazel, scanning the wreckage and giggling. "I really gotta cut back on the Hot Cheetos, huh, miniguy?" 

Beneath her, barely conscious after the barrage of force and stink she'd just unleashed on him, Max shuddered.