->"So I'm on a diet... Big deal. You know what a "diet" is, don't you? '''It's "''die''" with a "T," that's what it is!'''"
-->'''''ComicStrip/{{Garfield}}''''', [[http://www.garfield.com/comics/vault.html?yr=1978&addr=780830 August 30, 1978]]

A character is sneaking out to the kitchen for a midnight snack. He is careful not to wake up his wife or else he'll get caught. The minute he opens the refrigerator, he suddenly hears footsteps, so he turns around just in time to see his wife standing [[RightBehindMe behind him]] with a stern expression on her face. The wife then promptly puts her husband on a diet for trying to raid the refrigerator at night.

This is a type of episode that shows up in almost every form of media. When a character is caught trying to eat more than he usually does, he will promptly be put on a diet, or the character decides to go on a diet himself.

GrowlingGut trope maybe applied for comedic effect

Becoming a DeadHorseTrope as the obese become Less Acceptable Targets.

[[AC: {{Anime}} and {{Manga}}]]
* There is one in ''Manga/KamenNoMaidGuy''.
* ''Manga/AzumangaDaioh'''s Yomi is seemingly always on a diet. Her [[ADayInTheLimelight Day in the Limelight]] episodes often feature her trying several unsuccessful diets.
* Usagi tried to go on a diet but failed in an early ''Manga/SailorMoon'' episode that involved the villains taking energy from girls who were obsessed with getting thin.
* There is also a ''Anime/YesPrettyCure5'' episode where Coco goes on a diet because he got fat (although you never really see the difference in his human form) from eating too many cream puffs.
* ''Anime/PantyAndStockingWithGarterbelt'' has one in which, thanks to a Ghost, Stocking finds herself gaining weight (something that never happened before, considering [[GagBoobs all the fat she consumes goes to her breasts]]) and starting a [[MemeticMutation DIETO]].
* One episode of ''{{Manga/Gintama}}'' features most of the major female characters having become obese within the same time period and enrolling into a fat camp. They all go back to normal at the end of the episode after eating laxative-laced chips.
* Episode 8 of ''Anime/TamakoMarket'' focuses on [[spoiler:[[TalkingBird Dera]]]] taking a diet, as he has been overly obese to carry out his duties.
* As every episode in ''WebComic/AxisPowersHetalia'' is only five minutes long, that one is more of a diet skit. [[BigEater America]] gets worried about his weight after a casual comment by England. After he spends the skit asking different nations for diet advice, a note says that what America doesn't realise is that the reason for his rising weight isn't actually fat, it's muscle.
* Chapter 64 of ''Manga/MonthlyGirlsNozakiKun'' has Sakura and Mikoshiba trying to lose weight out of fear that they've become fatter. They first attempt to simultaneously exercise their arms whilst doing their manga work, then they have Mayu help them with their work-out routine. It's all for nought when they go to Nozaki's house and see that he's baked a cake for them.
* Chapter 18 of ''Manga/ReadOrDie'' has Michelle gaining weight from eating too much while reading so her sisters force her into an exercise program.
* Yukari Nashimoto of ''Manga/TsurezureChildren'' watches her weight very often in her focus chapters, but the stand out one is Chapter 152. Because she eats too many snacks, she decides to decrease the amount of food she eats during the day. By decrease, we mean starve, and it gets so noticeable that her crush comes over just to give her something to eat.

[[AC: ComicBooks]]
* ''ComicBook/{{Asterix}} and the Chieftain's Shield'' starts out with Vitalstatistix being put on a strict diet and sent to a health spa. We see the results near the end, where he's gone from 'round' to 'stick'. However, on his way home he samples food from the best inns, returning to his original girth.

[[AC: {{Literature}}]]
* The Dursley portion of ''Literature/HarryPotterAndTheGobletOfFire'' involves Dudley being put on a diet[[note]] because Dudley had come home from Smeltings for the summer with a note saying that the school's uniform provider no longer provides pants in the obese Dudley's size [[/note]]. Unfortunately, the Dursleys decided that to accomodate Dudley, everyone ''else'' needed to participate, including Harry (the ''last'' person who actually needed such a thing).
* ''Literature/JellyBelly'' fits the bill for its first half, subverting the trope once Ned gets serious and realizes cutting out junk food isn't as torturous as he thinks it is.
* In the first story of ''If This is Love, I'll Take Spaghetti'', the protagonist struggles with trying to stay on a diet so that she can become thin enough to attract her crush. It turns out that her crush [[JustTheWayYouAre likes her perfectly fine]] even with the extra weight, but she realizes that she still wants to lose weight for her own sake and he agrees to help "[[DistractedByTheSexy distract]]" her from thinking about food all the time.

[[AC: LiveActionTV]]
* ''Series/{{Roseanne}}'':
** One PlayedForDrama series of episodes, where Dan is put on a diet following his heart attack. Dan's cheating on the diet eventually leads to the largest fight he and Roseanne ever had on the show.
** In season two it's played for humor as usual, with Roseanne insisting they both go on a diet after she has trouble fitting into her pants. Dan seems to do fairly well, but Roseanne ends up nearly cracking after watching three food commercials.
* A major plot arc in ''Series/{{Frasier}}'', as Daphne started gaining weight after she got together with Niles. She was put on a diet and eventually sent to some sort of fat camp. This storyline was a clever trick used by the writers to mask the fact that Jane Leeves was actually pregnant.
-->'''Niles:''' She's just lost [[LampshadeHanging 9 pounds, 12 ounces]].
* In one episode of ''Series/ThePartridgeFamily'' Danny is teased for being fat, goes on a diet, and loses like 10 pounds, all without being noticibly slimmer. According to Danny Bonaduce's biography, it was not a pleasant episode to film.
* In an episode of ''Series/EverybodyLovesRaymond'', Marie, a SupremeChef, discovers that she has high cholesterol. She decides to go on a diet and eat healthier--which, by extension, means that everyone else has to as well. Unfortunately, it was the Thanksgiving Special...
* ''Series/GilligansIsland'' had an episode where the Skipper revealed that he'd probably rejoin the Navy if he ever got back to civilization, then found out he was overweight and went on a diet.
* On ''Series/{{MASH}}'':
** In the episode with the M*A*S*H Olympics, Hawkeye and BJ help a soldier who's in danger of being kicked out of the Army for being 20 pounds overweight. At the end of the episode, the soldier thanks them as he made his weight - by 3 ounces.
** In a humorous inversion in the same episode, Klinger begins eating everything in sight after he finds out he can be discharged if he's overweight.
* ''Series/{{Glee}}'' had an episode where Sue made Mercedes go on a diet in order to remain on The Cheerios. Sadly, this so-called "diet" resulted in Mercedes obsessing over her weight and starving herself, prompting Quinn to intervene.
* PlayedWith on ''Series/BabylonFive'': [[DaChief Garibaldi]] is ordered by Dr. Franklin to go on a restricted diet (or rather... a ''[[InsistentTerminology food plan]]'') because of various problems his body is suffering due to the after effects of being shot InTheBack by TheMole in an earlier season. Meanwhile, [[TheCaptain Captain Sheridan]] is ordered to eat what he considers "Rabbit Food" because he has gained ten pounds since his previous exam. [[TheLancer Commander Ivanova]] is ordered to eat more because she is suffering nutrition deficiencies because she doesn't eat enough healthy food; in addition, this is messing with her recovery from her broken foot (from the previous episode). Since all three of them are required to eat something that they hate and one of the others loves, this results in a scene where Garibaldi takes Ivanova's pasta, Sheridan takes Garibaldi's steak, and Ivanova takes Sheridan's salad and they try (Unsuccessfully) to eat them before Dr Franklin arrives in the mess.
* An episode of ''Series/{{That 70s Show}}'' had Red, after his heart attack, trying to sneak around his diet. After he gets busted, he says "This isn't food! This is what food eats!".
* In the ''Series/ThirdRockFromTheSun'' episode "Moby Dick", Dick goes on a diet after he starts overeating to deal with the stress of his break-up from Mary. [[spoiler:Later we find out Mary is also stress eating.]]
* In an early episode of ''Series/FamilyMatters'', Carl went on a strict diet to look good for his high school reunion. His family pulled out all the stops to keep him from cheating, to the point where he snuck ''baby food'' out of desperation.
* Played for drama in ''Series/TheFreshPrinceOfBelAir''. Philip was put on a diet and bribed Will into sneaking him junk food, only to end up having a heart attack.
* ''Series/ILoveLucy'' had Lucy go on a diet to be able to play Sally Sweet in one of Ricky's show numbers.
* ''Series/TheMunsters'' had an episode titled "Lo-Cal Munster" where the family is put on the diet. [[spoiler: The title suggests "low-calorie Muenster cheese."]]
* The Ronnie Barker one-shot "One Man's Meat".
* An episode of ''Series/TheSuiteLifeOfZackAndCody'' has Cody trying to help the hotel's chef lose weight. He manages to do it by telling him not to think of it as a diet, but a lifestyle choice. Additionally, Zack (who had become a glutton for sweets in the episode) is also put on a cold turkey diet, until his mother realizes it's too extreme and agrees to allow a small amount of sweets to curb his temptation. Meanwhile, one of London's socialite friends tells London she's fat and that Maddie is too skinny, so London spends the episode starving herself and working out, while Maddie gorges on food. London becomes exhausted from a lack of food and Maddie becomes too bloated to wear a dress for a model show (despite not appearing any bigger than normal), and the two accept their bodies when the socialite is revealed to be stuffing her bra full of toilet paper.
* There is one episode of ''Series/{{Poirot}}'' called ''Literature/EvilUnderTheSun'', in which Literature/HerculePoirot has to go on a diet at the Sandy Cove Hotel on Miss Lemon's orders after an incident at an Argentinian restaurant has sent him to a hospital where he is declared "medically obese". [[spoiler:It turns out at the end that the incident is not obesity or his health problems but food poisoning--nine cases of it in fact (Poirot's was one of them), so the restaurant had to be shut down until it can work out the food poisoning bit.]]
* Played for drama on ''Series/FullHouse'' as a VerySpecialEpisode, where DJ went on a crash diet so she could look good in a bathing suit. She was cured by a hug at the end of the episode.
* One episode of ''Series/StillStanding'' sees Linda date a younger and extremely physically fit man, which prompts Bill and Judy to try to exercise more. Unfortunately, they're both horribly out of shape, but that doesn't stop them from trying to hide their pain from one another.
* "Love Hungry," an episode of ''Series/TalesFromTheDarkside'', featured an overweight woman who had exhausted every trick in the book trying to lose weight. She applies for a unique new method and is sent a pair of headphones that allow her to hear the screams of food as it's being eaten, which prompts her to run from a restaurant. She then uses the next item in the diet kit, a pair of glasses; these cause her to see food as sentient and able to communicate with her. Her conversations with some fruit and a JELL-O mold are largely PlayedForLaughs...[[MoodWhiplash until the ending]], where, despite growing famished, the woman can't bring herself to eat her "friends" and ''[[MouthStitchedShut sews her own mouth shut]]'', starving to death.
* ''Series/TheAddamsFamily'' has "Fester Goes on a Diet", in which Uncle Fester starts dieting in order to make himself thinner and taller to impress his LoveInterest.

[[AC: NewspaperComics]]
* ''ComicStrip/{{Garfield}}'' has numerous strips where Garfield is put on a diet by Jon, and sometimes by Liz. In the earlier years of the strip, 'Diet Week' was a regular theme, explained by [[WordOfGod Jim Davis]]'s claim that when ''he'' goes on a diet, so does Garfield.
* About 50% of ''ComicStrip/{{Cathy}}'' strips are in some way about Cathy trying - and failing - to lose weight. The rest are usually about her trying to improve her appearance or meet men.

[[AC: {{Professional Wrestling}}]]
* Happened a few times in relation to light heavyweights, where there is a weight limit.
** In a 2000 episode of Sunday Night Heat, Christian wanted to challenge for the WWF Light Heavyweight title, but was a pound overweight. He spends most of the episode exercising to lose the one pound, but is so exhausted that he loses the match.
** During the build-up to ''WrestleMania 19'' in 2003, Matt Hardy was feuding with WWE Cruiserweight Champion, Rey Misterio. Smackdown GM Stephanie [=McMahon=] told Matt that if he could get down to the 220 pound weight limit (Matt weighed 227 at the time), she would make their match at WrestleMania a Cruiserweight title match. Matt then wrestled matches wearing a Sauna Suit under his ring outfit.
* As part of her Hollywood Pudgy storyline, Molly Holly was shown working out in at least one backstage segment in 2002 in an effort to lose weight.

[[AC: {{Puppet Shows}}]]
* In an episode of ''Series/TheMuppetShow'', Miss Piggy decides to go on a diet after overhearing that Kermit is planning to cancel her ballet number the following week, claiming she's getting too fat for the costume. Most of the sketches for the remainder of the episode have to do with either food or exercise.

[[AC: {{Web Original}}]]
* In the ''WebVideo/SuperMarioLogan'' episode, "[[Franchise/{{Shrek}} Shrek's]] Diet", Mario makes Shrek go on a diet after the latter suffers a heart attack from eating too much [[TrademarkFavoriteFood cheesecake]]. Mario gets Chef Pee Pee to make a salad for Shrek, and even signs Shrek up for a gym membership. At the end of the episode, Shrek loses weight from diet and exercise, but [[StatusQuoIsGod instantly gains it back when he starts eating cheesecake again]].
* In ''WebVideo/TheKateringShow'' episode "The Body Issue", Kate [=McLennan=], Kate [=McCartney=] and Beans the cat supposedly attempt the Paleo Diet, the Raw Food Diet and the 5:2 Diet respectively. The Kates are brought to the brink of malnutrition and insanity by their diets, but Beans thrives on the 5:2 Diet, "and her brain cancer is almost gone"!

[[AC: {{Western Animation}}]]
* Tummi Gummi got put on a diet after sneaking a midnight snack in the ''WesternAnimation/AdventuresOfTheGummiBears'' episode "The Oracle".
* At least one episode of ''WesternAnimation/TheFlintstones'' had Fred being shamed into dieting. Another had Fred participating in a game show where he would win a cash prize if he lost a signifigant amount of weight in a month. He had to resort to joining a support group for food addicts (which also sent out agents that snatched food away from their members if they try to cheat) to manage, and is irritable and half-dead by the time the contest is over. He does win, but he forgot to inform the group, so they end up swiping his victory meal.
* The ''WesternAnimation/{{Goofy}}'' short "Tomorrow We Diet" features the titular Goofy attempting one by the narrator.
* ''WesternAnimation/GoofTroop'' had an episode while Peg dares Pete to go a day without eating; naturally, [[{{Pun}} it eats him up inside]].
* One episode of ''WesternAnimation/TinyToonAdventures'' had Hampton try to go on a diet, only to be constantly tempted by a chocolate cake.
--> '''Cake:''' ([[EvilSoundsDeep in a deep voice]]) [[LetsMeetTheMeat Eat meee... Eat meee...]]
* ''WesternAnimation/{{Doug}}'' had two:
** The Nickelodeon version had "Doug Tips the Scales", involving the title character where Doug returns from summer vacation and notices that he's put on weight from his grandmothers cooking, and desperately tries to get rid of it before a beach party (despite not really looking different).
** The Disney version had "Doug's Chubby Buddy", which was a VerySpecialEpisode involving Patti getting anorexia.
* ''WesternAnimation/TheSimpsons'' had several of these for Homer, the most famous one being the first one, "Brush With Greatness", where he got stuck in the Mt. Splashmore water slide and decided to drop about 40 pounds. He doesn't change much visually but does succeed in losing the weight.
** "The Heartbroke Kid has Bart becoming seriously overweight due to getting addicted to junk food from the new school vending machines, to the point that he has a heart attack and has to be dragged off to a FatCamp. Its not until he realizes the impact his weight is having on his family (who had to open a hostel for rude German backpackers to pay for the camp) that he vows to take losing weight seriously.
* Chris Griffin had one of these in ''WesternAnimation/FamilyGuy'', but that plot took a back seat to Peter getting multiple plastic surgeries.
** Peter briefly tried going on a diet so he could meet the weight limit for a roller coaster at Six Flags. However, he soon gives up and resorts to using a corset to make himself look thinner. The results are predictable; the ride cant handle his real weight and ends up crashing, killing several passengers.
* ''TheCritic'' has an episode where Jay and Marty decides to enroll in a high-class FatCamp due to both of them having trouble with people mocking them for their weight. Jay only loses about 2 pounds (which he is elated over, calling it his "college weight", but Marty drops a substantial amount of weight and becomes quite handsome and popular in school. However, he begins to buckle under the pressure of popularity, as well as the stress of playing PeterPan in the school play. By the end, he's gained his original weight back from a massive ice cream binge, and is about to get beaten up for ruining the play, only to immediately slide back into popularity when the building engineer reveals that Marty damaged the school roof and the school has to close for a month of repairs.
* ''WesternAnimation/TheSmurfs'' episode "Gormandizing Greedy" is about putting Greedy on a diet after the Smurfs find out he has a weight problem.
* ''WesternAnimation/MarthaSpeaks'' has "Too Much Martha" where [[TalkingAnimal Martha]] is put on a diet and "Martha's Dirty Habit" which has a subplot of Daniel Lorraine (the dad of the family that owns Martha) giving up between-meal snacks for no real reason other than the fact that Martha was giving something up (digging) and he wanted to give something up too so she wouldn't feel alone.
* ''WesternAnimation/HeyArnold'' had the episode "Weighing Harold", where Harold wants to go on a diet after a few of the characters make fun of him for being fat. He goes on a special cruise ship for kids to lose weight, only to come back even bigger than he was before.
* ''WesternAnimation/BadDog'' had an episode where Vern goes on a diet.
* ''WesternAnimation/RockosModernLife'' had the episode "Frog's Best Friend", where Ed Bighead is put on a diet, while Bev gives her newly adopted stray dog [[BewareOfViciousDog Earl]] better treatment than him.
* ''WesternAnimation/HeathcliffAndTheCatillacCats'' had the episode "Lard Times" where Heathcliff puts himself on a diet. Hector, Wordsworth and Mungo force him into a grueling exercise program in an effort to make him so tired that they can take over his neighborhood. In the same episode, Grandpa is ordered by the doctor to also lose a few pounds.
* ''WesternAnimation/TheSuperMarioBrosSuperShow'' had an episode where Mario and his friends helped an out of shape Greek hero lose weight to fight Koopa.
* Monterey Jack went on a diet on an episode of ''WesternAnimation/ChipNDaleRescueRangers'', the twist being that he did so voluntarily as he was eager to get in shape after his weight caused some problems on a mission, while the other Rangers tagged alongside him for support. It was the other Rangers who had the most trouble keeping with the program. He eventually relents after realizing he's been pushing the others too hard.
* ''WesternAnimation/OggyAndTheCockroaches'' has had two episodes: "Oggy's Diet" and "Dee Dee's Diet". In Oggy's episode, it was so he could catch the cockroaches easier, for Dee Dee, it was so he could ''avoid'' being caught. Dee Dee actually managed to shed the pounds... only to gain them back in the end.
* An episode of ''WesternAnimation/SouthPark'' has Eric Cartman being sent to FatCamp to get his weight under control, and returns a few weeks later substantially slimmed down. It turns out however that this is an impostor that the real Eric sent back to South Park to steal junk food for him to smuggle to the other campers for money. The real Eric hasn't lost a pound, and on top of that is ruining the progress of the other campers with his scam.
* ''WesternAnimation/AmericanDad'' has a PlayedForDrama version where Stan goes on a diet after his family points out that he's put on weight since his prime (as a response to him being a huge jerk to Steve's pudgy girlfriend). Stan ends up developing serious anorexia and is reduced to skin and bones, to the point where he has to be hospitalized.
* ''WesternAnimation/CatDog'': "Dog Ate It" has Cat putting Dog on a diet in preparation for them entering a dance contest.
* The ''WesternAnimation/BikerMiceFromMars'' episode "Pitfall" had main villain Lawrence Limburger forced to go easy on indulging in slime worms because his superior Lord Camembert has ordered him to go on a diet for the next week.
* In ''WesternAnimation/GarfieldAndFriends'', Jon decides to go on a diet after putting on some weight, and ends up falling for a crooked diet program with overpriced, poor quality food served in absurdly small portions.