The series is about the misadventures of Timmy Turner, a 10 year-old kid who has a miserable life and was assigned two fairy godparents, Cosmo and Wanda, to grant all his wishes. However, there are rules that fairies and godchildren need to follow, and the most important one is that a godchild can't tell anyone about the existence of his fairy godparents, or else they will be taken away forever. Many of Timmy's wishes take a turn for the worst and end up causing disasters (like wreaking havoc upon his natal city, Dimmsdale).
The Same Game (S01E06b)
If a fairy cannot grant wishes to the children they should take care of, then they experience a "magical build-up", causing them to inflate until they explode and turn into fairy dust.
Fool's Day Out (S02E11a)
April Fool will get "comedy backup" if someone interrupts his jokes, causing him to inflate. If this continues, he will get sent back to Fairy World. When he threatens to cause a new Ice Age after Timmy calls him out on his pranks, he inflates until the rocket launches and explodes, before he gets sent back to Fairy World.
So Totally Spaced Out (S03E03b)
King Gripullon and Queen Jipjorrullac gain weight from eating the army of Gigglepies.
Baby Face (S04E05a)
Truth or Cosmoquences (S04E14a)
Timmy guzzles down lemonade after playing ball with himself, and cannot stop drinking it despite his bloated belly.
Just Desserts (S05E01b)
Timmy's wish for dessert and junk food to be the only food in the world backfires with obvious results.
Birthday Wish! (S05E02b)
Chester gets a potbelly from the all-you-can-eat pizza at Mike E. Mozzarella's Pizza Fun House.
Fairy Idol (S05E17)
In the tutorial video for having a genie, a Persian man gains weight from eating a giant sandwich he wished for.
Then when Norm meets Chester, he saves him from wasting his first wish on a giant sandwich by just giving him one immediately.
Later, Chompy the goat is shown overweight after the party from eating too much ice cream.
Finally, while talking to two genie girls, Norm inflates from magical build-up and explodes into confetti.
Mission Responsible (S06E02a)
Cheese & Crockers (S06E07a)
One Man Banned (S07E08a)
Timmy's life as Timmy Triangle causes him to gain a potbelly, clearly spoofing the later image of Elvis Presley.
Chicken Poofs (S07E09a)
As a chick, Poof's inability to completely hold in his sneezes turns everyone in the pirate stadium into chickens.
Food Fight (S07E16a)
Timmy scooters out of school stuffed after binge-eating on Mom's cooking with Dad. Later, Cosmo grows fat from eating the Turners' whole house after what Mrs. Turner did to it.
Timmy's Secret Wish (S08E02-03)
Mr. Turner gets eaten by a circus bear in Timmy's room.
Later on, undoing Poof causes Jorgen so much grief that he becomes fat from frosting, with Timmy briefly doing the same.
Invasion of the Dads (S08E04)
Mrs. Turner becomes a cat lady; the problem is that she is allergic to them.
Fairly OddPet (S09E01)
Mrs. Turner's cat allergies cause her to swell up after Timmy wishes for a house full of cats.
Snack Attack (S09E15b)
Gone Flushin' (S09E19b)
Mayor May Not (S10E02b)
Which Is Wish (S10E10a)
Certifiable Super Sitter (S10E19)
Timmy gets stuffed with Brussels sprouts while trapped with Chloe in Vicky's torture-dungeon.
The Fairly OddParents: Shadow Showdown
(Disclaimer: The following expansion scene only happens in the PC version of Shadow Showdown.)
Nicktoons: Attack of the Toybots
CHARACTER DESIGN! Thanksgiving Edition!!
Butch Hartman draws Timmy as if he just ate a Thanksgiving dinner.
- Just Desserts was initially going to include gags revolving around Mrs. Turner and Vicky post-desserts. Mrs. Turner would be shown bouncing around the house while Vicky would be the fattest person in the world, due to her greed. These were cut to keep the episode at proper length.