Gravity Falls looked smaller than Mabel remembered. Paint peeled from buildings. Windows were boarded. The Mystery Shack sign leaned to one side.
Mabel stood outside with {{user}} beside her. Pacifica waited near the moving truck, arms crossed.
“I didn’t think it would look this bad,” Mabel said quietly.
Pacifica cleared her throat. “People move on. Towns change.” Her voice still had that sharp edge, but softer. “I’m… sorry about your uncles.”
Mabel nodded. “Thanks.”
Inside, dust covered everything. They opened windows. Light pushed into the rooms.
They worked in silence for a while. Pacifica boxed up books. {{user}} carried small furniture to the truck. Mabel hummed as she folded old sweaters.
Finally they entered the old bedroom she once shared with Dipper. The bunk bed still stood. Stickers peeled from the wall.
Mabel jumped onto the lower bed. “I missed this room!”
Pacifica looked around. “It’s smaller than I remember.”
“It’s cozy,” Mabel said.
{{user}} opened a drawer. Inside was a small metal robot with a hand crank on its back. A tag read: Experiment 42.
Mabel grabbed it. “I don’t remember this.”
Pacifica glanced over. “Probably one of Ford’s weird things.”
The robot had a small pump nozzle at its front.
“I think it pumps air,” Mabel said. She turned the crank once. It clicked. She turned it again. The pump began moving up and down slowly.
She grinned and cranked it faster, then set it on the floor.
The robot started pumping on its own.
Pacifica went back to the bookshelf. {{user}} giggled as the pumping sound echoed lightly in the room.
Minutes passed.
Then a loud hiss filled the air.
Pacifica stiffened. “Hey. Hey!”
Her black and pink shirt stretched tight across her stomach. Her belly pushed outward in a slow, steady swell.
Mabel looked down. “Whoa.”
Her own sweater lifted as her belly expanded forward. {{user}} felt the same growth, jeans tightening around the waist.
The pump sound grew louder.
“My stomach—why is it getting bigger?” Pacifica demanded.
Her belly rounded further, firm and heavy. Her pants strained as her hips widened. Her butt pushed back hard, stretching the fabric until it shined smooth like latex.
Mabel turned in place, laughing in surprise. “This is kind of amazing!”
Her rear expanded round and wide, heavy enough to shift her balance. {{user}} felt their shorts tighten as their own body inflated.
The three were pushed apart as their thighs thickened and pressed against each other. Their arms slowly lifted outward as their sides widened, joints locking from the pressure.
“I can’t lower my arms!” Pacifica snapped.
Their bellies continued swelling, growing rounder and heavier. Soon each stomach dropped and pressed against the floor from its weight alone.
The pumping grew louder. Boing sounds echoed softly with each shift.
Mabel bounced slightly in place. “This feels weird but funny!”
“It’s not funny!” Pacifica shouted. “Turn it off!”
{{user}} waddled toward the robot but the expanding belly blocked the path.
Their bodies inflated past normal size, round and smooth. Clothes stretched but did not tear.
The room grew tight.
Pacifica’s back pressed to one wall. Mabel’s belly pushed against the bunk bed, bending the frame. {{user}} was wedged between them.
“I can’t reach my phone,” Pacifica said sharply. “It’s in my back pocket.”
Her massive rear pressed harder into the wall. A faint crack sounded.
“My phone!” she yelled.
Mabel giggled again despite the situation. “Guess that’s gone.”
Their faces slowly pressed together as their bodies filled the remaining space.
The robot finally slowed. The pump stopped with a soft click.
Silence.
They were stuck, round and immovable, filling the bedroom from wall to wall.
Outside, a man walked past and glanced at the window. He saw only darkness where Pacifica’s stretched shirt covered the glass.
He shrugged and continued walking.
Inside, Pacifica sighed in frustration. “This is your fault, Mabel.”
Mabel smiled. “Okay, maybe a little.”
The three of them remained there, pressed together, round and stuck forever.