This is the seventeenth one-shot of a series of one-shots where I will write one Harry Potter weight gain one-shot for every day of the month of October.

The prompt list itself is right here, credit to fffandever on Furaffinity: https/view/58049281/

So here is the seventeenth day's one shot, inspired by the infamous WG comic Craving Control, with the prompt, "Potion".

…

Ginny's Seafood Diet

January 15th, 1995

7:45 AM

Gryffindor Common Room, Hogwarts

This year was utter gobshite if the Weasley Twins were being perfectly honest. The ministry implanted some crony to make Hogwarts utter hell and to shut Harry up. The boy was forced off the quidditch team and all goods and mail were scanned and destroyed if they either broke filches totalitarian rules or told about what was happening in the school. Slytherin was rounded up and made into the Inquisitorial squad, making infractions for every house other than itself to add to the wall of educational decrees.

It was about damn time that they got to pull off a prank.

"Alright so you got the mail?" George asked.

"That's right, the sucker who ordered this allergy potion won't know what'll hit them." Fred said as he pulled out the potion and poured it down the drain.

"Right, I mean it's just hijinx in all. No need to bust a vein over it." George said as he poured another potion in the bottle.

The twins put the potion in the box and shake hands as they hand it to the random post owl they stunned and abducted it from. The owl ruffled its feathers and flew off towards its intended recipient. The twins grinned and waited to see the results of their hijinx at around dinner tonight.

~§§§§§•§§§§§~

January 15th, 1995

6:45 PM

Gryffindor Table, Hogwarts Great Hall

Tonight was Hogwarts' monthly seafood night. Fish and chips, crab, flounder, and various other seaside specialties were served. Nursing a hand soaked with murtlap essence, Harry Potter looked over at Ginny Weasley who was rummaging through her bag.

"Whatcha got there Gin?" Harry asked.

"Allergy potion. I'm allergic to shellfish so this potion will help me ignore that nasty business." Ginny said, remembering how much of a pain it was to get Umbridge to agree to let her get the potion.

Ginny popped open the cork and drank the potion, on the other end of the table the Twins were eating when they noticed the bottle in Ginny's hands.

"Hey Fred, isn't that?" George said before Fred shut his mouth.

"Shut up or we'll end up both dead by mum." Fred yelled in a hushed tone.

Ginny drank the potion and smacked her lips together, feeling confused at the chocolaty flavor.

"Did mum try a new potion recipe?" Ginny asked confused, however, seeing the look in the twins eyes she glared.

"Oh those two rats…" Ginny said as her temper flared up.

Ginny's reddening face began to puff out, her freckled cheeks swelling up with baby fat. Her abdomen started to rapidly bloat in size too, her shirt becoming tighter and tighter as her stomach grew from being flat as a board, to the size of a cantaloupe, and then to the size of a pumpkin. Her shirt burst open with all of her buttons flying off, some hitting people in the eye and others landing in the chowder.

"Ginny?!" Hermione asked aghast as her friend tried to get out of the table.

"Nghh! Twins!…" Ginny said as what was left of her shirt draped down the sides of her body.

It would have been quite the show for the boys seeing her C-Cup breasts contained in a red and gold bra, but everyone was too shocked by the bloating belly. Ginny struggled to get out, but by the time she stopped trying her stomach had grown too large to put back under the table. So she had ro plop it on top of the table with an audible "PLOP!" accompanied by the spilling and clattering of various dishes served that night. Ginny groaned and struggled to concentrate on what was happening as she sat back down, her stomach growing to incomprehensible sizes from a bush, to a small boulder, and then a regular sized boulder.

Harry could only stare in some strange fascination as the pale-freckled orb got bigger and bigger.

"Mate, you gotta get out of the way!" Ron said as he got out to save his own skin.

"Bloody hell…" Harry said, not able to take his eyes off of it.

"Nghh… Fred, George… you're dead!…" Ginny struggled to put out as her stomach filled with more and more adipose.

Once the belly was large enough to fit a rampaging erumpent inside, even some of it pooling into Harry's arms, the hall table creaked under its weight. Everyone in the great hall paused as they looked at the looming orb suddenly smashed through the millennia old oak-tree table. Ginny yelped in shock as her stomach shattered the ancient table and then the bench she was sitting on, falling backward to the floor before the dazed witch was smothered by her own colossal gut. After that, Harry got up and ran through the broken table to aid the unconscious Ginny as her stomach kept growing and growing.

The twins figured they could pin this on Harry, I mean Umbridge was looking for a reason to expel him right?…

~§§§§§•§§§§§~

July 18th, 1995

1:35 PM

Weasley Garden, The Burrow

Everyone knew the battered old home that was the Weasley's Burrow, however, there was a new acudremant. By the end of the home was a colossal blob of tanned fleshy blubber that was the size of a Hungarian horntail dragon. It occasionally bobbed up and down as if it were alive, jiggling from whenever it was hit by a stray gust of wind. At the top of that mound was a witch and a wizard, two recently expelled Hogwarts students: Harry Potter and Ginny Weasley, or more accurately Harry Potter was atop the mound that was the witch Ginny Weasley.

"How am I doing love?" Harry asked as he lathered up his hands in suntan lotion while wearing a pair of muggle Bermuda shorts.

He pressed his hands into Ginny's back, smooth as the day she drank the potion. She was wearing a muggle bikini today since the weather was nice out. Nothing would ever cover her gargantuan gut so every outfit from summer wear to winter wear were automatically crop tops.

"Oh your hands just feel wonderful Harry~… mmm~… Merlin with a stomach like this, your hands are a Godsend for my back." Ginny said as she undid her bikini top to prevent tan lines.

Turns out the potion the twins gave her, intending to be given to a random Hogwarts student, was home brewed so lacked a proper antidote. So Ginny was stuck like this until they could get a potion master to determine the proper counter potion. She couldn't say it was all bad, sure she was floored by never being able to play quidditch again but she also enjoyed being waited on hand and foot by her loving boyfriend and indentured servants-err-brothers. Not to mention some small, admittedly aroused, part of her brain wanted to see how much bigger it could get. The twins, Harry, and Ginny were all expelled by Umbridge since two of them drugged a student, Ginny couldn't attend anymore, and to be honest she just hated Harry. Fortunately Harry was able to get access to his family's fortune so the family would never have to worry about monetary issues ever again.

"Hey George?" A haggered Fred asked as he wiped sweat off his brow.

"Yeah Fred?" Asked George, who grew a beard.

"I blame you for all of this." Fred said angrily.

"It was your idea you bastard!" George said as he tackled Fred to the ground to beat him into a pulp.

Yes, the Weasley twins would never get along well after that…

Not after giving their sister that dreaded blimp belly potion…