"At long last! After weeks of…"

"Child labor."

"Unpaid breaks."

"Stealing refuse from the dump."

"…blood, sweat, and tears, THE MYSTERY BEACH IS OPEN!" Stan triumphantly declared as he cut the ribbon with a pair of rusty scissors. As Wendy was too tired from hammering together benches to turn on the boombox, Stan went over and gave the tired old device a swift kick. It started to play Generic Beach Boogie Track #04. Stan started to hula dance while the rest of the people he forced to help build the beach just laid down for a bit until they regained their energy.

It took two hours of rest and changing clothes, but at long the workers and their friends could enjoy the fruits of their efforts. Stan had played a great game of poker against the mayor and won the deed to the beach on the lake as part of a new money-making scheme. "And I only had to cheat once!" He proudly boasted as he returned his special ace of spades back into the sleeve of his jacket. So he got his nephew and niece and his two employees to build him a beach using what supplies they had on hand. Driftwood, cheap umbrellas, what other building materials Soos had laying out in his shed, and some stuff Mabel found 'laying around with no one looking at them.' And the only thing missing?

A actual beach. So Stan had Mabel draw on some giant poster boards for the background and the man himself randomly dumped out sand all over the place. There, beach!

"Well, at least we don't have to pay the cover charge." Wendy sighed as she laid back onto her towel draped over the rickety and uneven wooden chairs. "…for now."

"Okay." Candy tossed the volleyball up and down on her side of the fishnet that served as the divider between the court made out of lines drawn by a stick. "Grenda, I'm going to need you to be real careful." She pointed at the slightly deflated ball. "This is the only one we have, and it's fragile."

Grenda nodded. "I just tap it." She imitated knocking on a door.

Candy smiled. "Okay, this will work." She lifted the ball up into the air and hit it with appropriate force. After calmly sailing over the net, Grenda merely flicked it back. Candy smiled. Things were working out….until the ball returned back to Grenda who used both hands to hit the ball back, popping it like a balloon. "Oh, Grenda." Candy sighed. Grenda nervously laughed as she tried to fix the ball.

But more serious issues were going on a bit further down the line. Mabel had decided to build a sand castle for a king, King Waddles. But as she started work on the west wing, things went south when in came the east wind carrying Pacifica North…west. Pacifica strode over to Mabel's sandcastle and rocked back and forth, thinking about demolishing the place with a well-placed foot. But having her learnt her lessons from past experiences, Pacifica switched from physical attacks to verbal. "Hey." She sniggered. "It's your future career."

"Professional sand-castle is a rare sport…" Mabel took a moment to think about it. "…but hey, I can earns lots of money from commissions and get all the beach time I want!"

"Yeah, sure." Pacifica sighed. While she remembered attacking Mabel in front of Stan would have dire consequences, verbal attacks had little to absolute no effect on the happy go-lucky girl. But perhaps a comparison was in order. "By the way…have you grown any?" Pacifica asked while making a circling motion towards her chest.

Mabel turned around for a quick second before turning around and saying. "Nah. Kinda good for me, I like my current selection of clothes."

"Not heightwise." Pacifica said in a more neutral tone. "Chestwise."

"Is that some sort of lame fat joke?" Mable replied in a more direct tone.

"Breasts!" Pacifica shouted. The other beachgoers looked at her for a brief moment, making the rich girl blush a bit. "I'm talking about your breasts!"

"I think I was told something about this in school…" Mabel squinted, getting tired of Pacifica's attitude. "Should I go ahead and call Blubs and Durland?"

"Ergh!" Pacifica took a second to calm down and get back to the subject on hand. "Take a look at this, chalkboard!" With a single motion of her body familiar to a shampoo commercial, she swung her body back and forth, letting her apparently ample chest bounce a bit. Mabel took notice at long last, gasping in awe.

"Some will call me a early bloomer." Pacifica started to boast. "But I chalk it up to good genetics." She leaned onto her toes and started to bounce up and down. While her chest wasn't as voluminous as most of cheap animes aimed towards young men, it did move up and down a bit. With at least enough motion to make Mabel gasp once more. "So…" Pacifica giggled in her usual fashion. "…tell me. You still use the toddler's section?" Pacifica than walked off, continuing to showoff her underage body to the uncomfortable adults around her.

"I still got a better body…" Mabel bemoaned to herself as she looked down to her own unequal chest. Waddles came over and licked Mabel's face, allowing her to temporally forget about Pacifica for now.

As one of the Pines twins had a problem, it made sense that the other would have one too. Like with Mabel, Dipper's day started out normally: burying a heavily-sleeping Soos under the sand. But soon his attention of turning Soos into a sandlady got turned away when he saw a actor out of Baywatch come his direction. Nay, that be Wendy in a awesome bikini running by. His mouth hang open and laid there like a giant mousetrap. He nearly choked on a fly that entered the void.

But as he ran up to her little jog, flying dirty insects weren't the only thing he ended choking on. "Ugha…" Which meant 'Hello'. Wendy obviously hadn't been paying attention in Idiot-Speak, and merely turned her head with a kind smile. Dipper then said, "Stimlow." Which could either mean 'You are very attractable to my various senses." Or "I can't find the right words for this predicament." Wendy must have interpreted as the latter, as she gave a very confused look.

"Hiya Wendy!" Came the bugle cry of the attacking unit of Robbie, knocking poor Dipper to the ground and out of sight. What Dipper could see was a sight that would burn his mind and leave behind a noticeable scar…Robbie in a speedo. "I got a few pranks lined up, you wanna liven the place up a bit?"

"Better than exercising I guess." Wendy sighed. "Lead the way!"

Dipper then watched the two run off while crackling like maniacs. He soon got himself out of the hole in the ground and brushed away the sand covering his arms. Normally he would play sad music in his head, something with a soft piano and a caressing violin. But rather, his anthem to his sadness started with a swift electric rock guitar solo and then hit it hard with fierce drum pounding. Anger swelled inside him…

….and then came the slidewhistle as he fell into a pit covered up by a towel. Once more plucking himself out of the ground, he could snickering and a loud two-person clap.

Dipper laid in his new hole home, wondering and pondering onhow he could deal with Robbie and finally win Wendy over to his side. He imagined himself as a older, but still stapling study fellow with the perfect body flexing his mountains of muscles as a gorgeous Wendy hugged his bicep. So he needed to become older and more masculine…and seeing how Gravity Falls operates, there should be a item or two that could fix this little problem…but what and where…

"Man, I hope that's just a bar of soap." Dipper bemoaned as he could feel something cold sticking to his back. As he nervously reached around to grab it, he prepared for the worst. But instead of something living or even organic, it felt metallic…sort like a medal! Hoping that he could impress Wendy with something valuable, he pulled it off his back and examined it. Shiny all right, but Dipper guessed it would probably get him enough to get a few candy bars knowing his luck.

The symbol on it caught his eyes. Crawling out of the pit, he went over to where he stashed his manual on the oddities of the town. Quickly scanning it, he found the symbol and even the medal itself! "Hormonal Improver." Dipper stated the title of the article. "Increases the age of the wielder to a appropriate age…" Dipper closed the manual instantly after that part. Nonverbally he went around the city and found a towel that could use as to support the medal. And with a toss of his head, he slapped on the medal.

He felt a strange pulling sensation from all sides. The first item to be increased was his head and torso. He could feel the muscles in his body straining and building as his arms and legs gained length and size. But despite the pain he went through, he remained standing during the entire transformation. Eventually, after a good minute of painful stretching the whole thing ended…and Dipper felt…taller.

Dipper found the mirror in the changing room and looked upon his new bod. Spanking fresh and muscular. He flexed a few times, and boy did his muscles put on a fireworks show! He looked nice! He looked just like the hunk that Wendy had been fawning over in her latest mag. Tossing his manual aside, he ran like a action star out to go save Wendy from that speedo-wearing freak.

But the book had more to offer about the medal. You see…there's a set of these medals. Dipper thankfully found the one that made older and the twin grants the effect of youth. Worn together, the wearer becomes a immortal being….

…but that's a later chapter.