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[[quoteright:350:[[WesternAnimation/TheAmazingWorldOfGumball http://static.tvtropes.org/pmwiki/pub/images/gumball_hobbies_2182.png]]]]

->''"Look, I'll tell you a story, all right? I once fell deeply, you know, profoundly in love with tropical fish. Had 60 goddamn fish tanks in my house. I skin dived to find just the right ones. ''Anisotremus virginicus, Holdacanthus ciliaris, Chaetodon capistratus.'' You name it. Then one day I say, 'fuck fish'. I renounce fish. I vow never to set foot in that ocean again. That's how much fuck fish."''
--> --'''John La Rouche,''' ''Film/{{Adaptation}}''

A character trait mostly in sitcoms, but occasionally played straight. A character gets passionately involved in hobbies for short amounts of time, before putting them aside and starting something else. May set up a series that is essentially Hobby of the Week or something similar.

Compare CompressedVice when this is done with character flaws, and WhyDoYouKeepChangingJobs when it's done with ''careers''.

If the character supposedly always was an enthusiast in today's hobby rather than picking up something new, see BackstoryOfTheDay.

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!!Examples:

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[[folder:Anime and Manga]]
* Part of the backstory in ''The Melancholy of LightNovel/HaruhiSuzumiya'' is that Haruhi tried out every club on campus, excelled in every one, and quickly got bored with them.
* ''{{Durarara}}'''s Izaya Orihara is evidentially very flighty when it comes to hobbies.
-->'''Izaya:''' That's why I make it my hobby to stomp on girls' cell phones. HA HA HA HA HA!...Bored now. Stomping on girls' cell phones is no longer my hobby!
* Maon of ''Anime/{{Tamayura}}'' grew up changing dreams all the time.
* In the ''Anime/GirlsUndPanzer'' prequel manga, "Little Army", Hitomi, one of the girls who is part of Miho's tank crew, has a habit of quickly switching her focus between hobbies, and her best friend Chihiro worries that tankery is just another phase. Thankfully, Hitomi manages to prove that she's more committed to tankery.
* The manga version of ''Manga/BattleRoyale'' takes this to an extreme with Kazuo Kiriyama, who, due to a brain injury he suffered in utero, was unable to display any sort of passion. Hence, after mastering a particular hobby, he'd discard any interest in it. For example: he mastered a violin in a short amount of time, then threw the violin away. Likewise with a painting he created.
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[[folder:Comics]]
* In ''ComicStrip/FoxTrot'', the mother, Andy, does this a lot, sometimes becoming [[CompressedVice briefly addicted]] to the video games [[HypocriticalHumor which she criticizes Jason for playing]].
* The ComicBook/DisneyDucksComicUniverse has Fethry Duck, WesternAnimation/DonaldDuck's scatterbrained cousin who was frequently dragging Donald along on his latest interest.
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[[folder:Film]]
* Played straight in ''Film/{{Adaptation}}'', where the plant expert was formerly an aquarium expert. "Done with fish," as he stated. He was a real person in the non-fiction book on which the movie was based. Sort of.
* In the dark marital comedy ''TheRef'', Lloyd rips into his wife for this (among many, many other things).
* Penelope in ''Film/TheBrothersBloom'' collects hobbies as a result of her social isolation. She demonstrates for Bloom her skills in juggling, rapping, skateboarding, card tricks, breakdancing, multiple musical instruments...
* In ''Film/HotShots'', the hero's love interest Ramada is doing something different every time he sees her, from trick horseback riding to lounge singing to ''welding''. She's officially a psychiatrist.
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[[folder:Literature]]
* OlderThanRadio: ''TheWindInTheWillows'' (1908): Mr. Toad is practically the poster boy for this trope.
* ''Losing Joe's Place'': Rootbeer Racinette A secondary character and later indispensable plot coupon from Gordon Kormans book. He has a running gag where he gets a new Hobby everyday and later is turned into a variety act by his desperate for money "Friends".
* Keladry states that one of her brothers is like this in ''Literature/ProtectorOfTheSmall'', jumping from great-seeming idea to great-seeming idea. (She also thinks that one of three girls that ask her advice about becoming knights could also be this type.) There are some who think that Kel forming crushes on three different boys (Nealan, Cleon, and Domitan, though she only dates Cleon and it never goes very far) fits too, but keep in mind that 1. it was over a period of eight years, almost a ''decade'' and 2. she's a teenager.
* Chet Morton of ''Literature/TheHardyBoys''. He has one [[OnceAnEpisode virtually one every book]], which usually ends up being [[ChekhovsGun very important to whatever case the Hardy Boys were investigating]].
** Frank and Joe are hardly any better, in many books the plot is kicked off by one of them suddenly displaying a new hobby or skill they claim to have been into for years but is only now brought up.
* Creator/PGWodehouse:
** In ''Psmith in the City'', Literature/{{Psmith}}'s father turns out to have this trait, possibly as a result of his AttentionDeficitOohShiny
** In the ''Literature/JeevesAndWooster'' novel ''Thank You, Jeeves'', Bertie Wooster claims to be prone to these, the current one being banjolele-playing. The events of the book see him split with Jeeves and move to the country solely to pursue this hobby, [[spoiler:[[StatusQuoIsGod only to give it all up by the end]]]].
--> ''Those who know Bertram Wooster best are aware that he is a man of sudden, strong enthusiasms and that, when in the grip of one of these, he becomes a remorseless machine - tense, absorbed, single-minded.''
* In the ''Literature/GuardiansOfTheFlame'' series, Karl Kullinane was very much like this in his days as a college student, so much so that a prospective love interest wasn't comfortable dating him because she was afraid of becoming his passion of the week, and him not sticking with her.
* In ''Gallows View'', Peter Robinson's first Inspector Banks mystery, we learn that Banks is prone to this sort of behaviour. "That was how the house had come to be so cluttered with the novels of Charles Dickens, wine-making equipment, twenties jazz records, barely used jogging shoes, a collection of birds' eggs, and books on almost every subject under the sun -- from Tudor history to how to fix your own plumbing."
* Mad King Aerys, PosthumousCharacter from ''Literature/ASongOfIceAndFire'', is revealed in ''Literature/TheWorldOfIceAndFire'' to have suffered from a royal variant of this in his youth. He would constantly devise grand and impractical projects such as turning a desert into farmland or conquering the worthless tundra north of the realm populated by savages. He'd always grow bored with the plans and drift off to some new scheme in a few weeks.
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[[folder:Live Action TV]]
* Hal from ''Series/MalcolmInTheMiddle'' took up board games, skating, NASCAR, robot building, painting and various others. [[LampshadeHanging Lampshaded]] in one episode that features this happening with DDR: We learn that he and Lois have an agreement that Hal can indulge in these things as long as it doesn't interfere with his job, as they both know the obsession isn't going to last. It's implied that these hobbies are one of the primary causes of their financial difficulties.
* The ''Franchise/StarTrek'' franchise has various examples:
** ''Series/StarTrekTheOriginalSeries'': Sulu had an interest in botany in one episode (ISTR) and in fencing in another. Also, antique firearms. The novel ''Death Count'' runs with this, claiming he picks up a new hobby on every shore leave. It's WordOfGod -- the original 1960's ''Star Trek Writer's Guide'' describes Sulu as a serial hobbyist, but this personality trait was only really played up in the early episodes of the series. It's even {{Lampshaded}} in "The Naked Time," when Riley mentions that Sulu's passion for botany has switched to fencing. The botany hobby gets briefly mentioned again in the third season episode "The Way To Eden." The fencing also comes up in the [[ContinuityReboot rebooted]] [[Film/StarTrek movie]].
** Sure, Benjamin Sisko of ''Series/StarTrekDeepSpaceNine'' had an interest in Bajoran history from day one, but putting aside a ''month'' to assemble an ancient Bajoran solar sailing ship by hand and actually trying to fly it in space? And then never mention it again?
*** However Sisko rediscovered that when tachyons interact with the sails on a Bajoran Light-Ship, they are capable of accelerating them to Warp-speeds. Since this proved the Bajorans claim that they used Light-Ships to make First Contact with Cardassians, it's likely it was deemed historical significant and placed into a museum.
** One episode of ''Series/StarTrekVoyager'' has Paris getting obsessed with repairing a starship named Alice. It turns out that the ship (who was sentient) telepathically created the obsession so that she can be repaired and taken home. Also his constantly changing interest in various holodeck simulations. And his interest in "classical" American history. And his sudden desire to become a holo-novelist. And his...
*** Paris however is shown as having kept these hobbies in addition to his new ones. As reviewer SFDebris notes, given all of his many skills and hobbies, Paris is incredibly ''overqualified''... and he's the guy Starfleet ''doesn't'' want?!
*** Justified in the case of The Doctor, as he was deliberately trying out different hobbies in his quest for individuality.
* ''TheBradyBunch'': Greg had sudden hobbies of surfing and photography. Justified in the case of surfing, as Barry Williams was an avid surfer in Real Life; it had just never come up during a plot before.
* Chet, from ''TheHardyBoys'' series is prone to this. Shot Put, Ventriloquism, Scrimshaw, Spelunking...
* In each episode of ''ThePretender'', Jarod would engage in fleeting obsessions with an episode-relevant skill and/or some childhood item previously denied him at The Centre, taking the time to learn everything he possibly can about it. This goes along with his talent of being able to become anyone he wants to, meaning he's a very very quick study.
* Tommy Oliver from the ''PowerRangers'' metaseries suffers from this seasonally. He's had brief but intense interest in martial arts (he stays good, but he only did it purely for pleasure in the first season or two), American football, and ''racecar driving''. Most notably, he actually got a job doing that last one immediately following high school graduation, only to show up seven years later as a high school science teacher (with a Ph.D. in Paleontology) who'd retired from being a successful mad scientist who worked with biological experiments. It is unknown how, or if, he ever finds the time to sleep.
* Ellen of ''Series/TheAdventuresOfPeteAndPete'' would show up with different passions and/or different jobs. She was absolutely fixated on each one for the episode it lasted for--marching band, woodshop, and vending machine repair in one episode. Invariably, each one would disappear after it had lost its plot relevance--except for marching band, which in a surprising bit of continuity was mentioned a season before she developed an obsession with it.
* Edina in ''Series/AbsolutelyFabulous'' does this, in cycles of three weeks according to daughter Saffie. Phases include Japanese decor, living through a personal organizer, colonic irrigation, modern art and adopting a Rumanian baby (the last, thankfully, a dream).
* The eponymous Joan from ''JoanOfArcadia'' eventually developed this, as God's instructions lead her to adopt new hobbies every week, which would often be abandoned by the time the mission was over.
* In the ''Series/TheBigBangTheory'' episode where Sheldon loses his job. He claimed that his unemployment finally gave him the time he needed to pursue his interests, but he couldn't stick to one hobby!
* In the ''Series/ThirtyRock'' pilot, Jack Donaghy uses his market research knowledge to correctly guess that every two years Liz Lemon takes up knitting for a week.
* In ''Series/HomeImprovement'', Tim's neighbor Wilson is always involved in some strange new activity just before he gives Tim some advice.
* In ''Series/BreakingBad'', Hank Schraeder starts collecting minerals while recovering from a botched hit, but loses interest once he can walk again.
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[[folder:Tabletop Games]]
* In many ''TabletopGame/DungeonsAndDragons'' settings, the [[OurGnomesAreWeirder Gnomes]] are portrayed as [[MadScientist tinkerers]], and as such will often fall under this trope. In less grim settings (or [[WhileRomeBurns occasionally, grim settings]]), the [[OurElvesAreBetter Elves]] might as well, especially if they are carefree or hedonistic.
* The Orren, [[FunnyAnimal otterfolk]] of the [[WorldTreeRPG World Tree]] setting, have this as one of their [[PlanetOfHats hats]]. They are stereotypically described as having many interests that they flit between and learning new skills easily, the latter of which is represented in the rules with a chance to gain extra skill levels.
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[[folder:Web Comics]]
* Sally of ''Webcomic/DarthsAndDroids'' is a "young enough to make sense" example, as she keeps changing what she wants to be when she grows up.
* Aki of Aki Alliance drops in and out of so many school clubs that the entirety of her class hates her for not sticking with them.
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[[folder:Western Animation]]
* ''WesternAnimation/FamilyGuy'': Peter Griffin, lampshaded in recent seasons where his family finds out they can distract him just by bringing up some obscure hobby. See also: the Petercopter and the Hindenpeter (exactly what they say on the tin)
* Taken to an extreme in ''WesternAnimation/TheSimpsons'': Homer has a new 'life-long dream' every time he brings it up, usually followed by Marge reminding him what his last lifelong dream was (such as getting on ''Series/TheGongShow'' or eating the world's largest hoagie). Also, Homer consoles Bart by saying that if he doesn't want to learn the guitar, he can just put it in the closet with his [[CallBack karate uniform]] and unicycle. Bart is 10, though.
* Randy Marsh in ''WesternAnimation/SouthPark''. As his wife laments in the episode "You're Getting Old": "You do this all the time! First you're obsessed with baseball fights! Then you need to play Warcraft! Then you gotta be a celebrity chef!" Although that episode also reveals that these fleeting obsessions are the result of a mid-life crisis.
* In ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', the Cutie Mark Crusaders do this a lot. They tend to approach pretty much every new activity with endless enthusiasm and put a lot of effort into it, and then abandon it as soon as it becomes evident that it won't get them their cutie marks. Some of the things they've tried include zip-lining, journalism, musical performance, and hairstyling.
* ''WesternAnimation/TheAmazingWorldOfGumball'': Pictured above, in "The Gi" Gumball and Darwin quickly get tired of football, tennis, horseback riding and figure skating. In the case of the last one, only Gumball got tired of it. For each one, we get a cumulative counter of how much money they've wasted starting these things and going nowhere with them.
* In the ''WesternAnimation/AngryBeavers'' episode "Fancy Prance", it's revealed that Dagget has had literally dozens of "life-long dreams". While helping Norbert with ''his'' life-long dream of performing with the Lipizzaner performing horses, Dagget concocts a new one of being "the crusty-but-lovable manager of the guy pursuing his life-long dream".
[[/folder]]

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