->'''Leonard:''' You betrayed us for money!\\
'''Sheldon:''' I'm a Rogue Night Elf; don't you people read character descriptions?
-->-- ''Series/TheBigBangTheory''

Characters are the sum of their tropes. Sometimes they even recognize this about themselves. When another character makes a comment about their behavior that fits their character, they will usually respond with something like, "It's what I do."

'''Can be used in several ways:'''
# A comedic "Duh!" moment, which is most often.
# A TearJerker when they perform a HeroicSacrifice.
# A kind way to say, "ThinkNothingOfIt" when receiving praise for heroic actions.
# A villain berating the heroes for [[DidYouActuallyBelieve actually expecting something different]] from them.
# A {{Jerk Justification|s}}.

An implication with using this line is that characters need to be consistent in their behavior, not just doing whatever is needed for the plot. But don't be too surprised if characters behave in a way slightly different from what you expect, as an OutOfCharacterMoment can be the opposite of this.

The underlying implication is that the character doesn't necessarily WANT to do whatever it is they're doing, that it's not a special case just business as usual. It's their nature and they can't help it. Can express a desire for emotional growth, or the lack thereof if "What I Do" is something the character has spent a significant amount of time trying not to do, or angsting over doing it.

Or, in the Type 2 case of a heroic sacrifice, the person being saved is someone who arguably doesn't deserve to be saved. The hero is expressing that it doesn't matter if the victim deserves to be saved; a trademark of someone suffering from ChronicHeroSyndrome. To not be the hero is unthinkable. However, since these heroes are very rarely stabbed in the back immediately after taking the bullet for a nemesis... well, maybe the victim did deserve to be saved. This situation lends itself to many a HeelFaceTurn.

Also see TheFarmerAndTheViper, which is when a villain makes a hero pay the price for not realizing this. Also BecauseImGoodAtIt.


* Rika Shiguma from ''LightNovel/BokuWaTomodachiGaSukunai'' is a very perverted character, and for the most part is not afraid to hide her interests from other characters. She will often also shout {{Unusual Euphemism}}s such as [[http://www.youtube.com/watch?v=zGRxJmVbii4 "Universe!"]] and [[http://www.youtube.com/watch?v=r-beXhtVekY "Excalibur!"]], and tries to introduce other members of the Neighbors club to her interests such as BoysLove, video games, or mecha on mecha porn.
* Maria uses this as a Type 2 in ''Manga/SevenSeeds'' when talking about how she and the other entertainers were brought to Ryugu Shelter to entertain and keep the people calm and content [[spoiler:despite TheEndOfTheWorldAsWeKnowIt happening up on the surface or a terrible, deadly parasite breaking out]] and how they'll continue to do their jobs until the very last moment because it's what they got brought to the shelter for.
* Joey says this as he volunteers to duel in the pre-Battle City Virtual World mini-arc of the ''Anime/YuGiOh'' dub.

[[folder:Comic Books]]
* {{Wolverine}}: "I'm the best there is at what I do. What I do ain't very nice."
** {{Deadpool}}: "Now I'm better at doing whatever it is Wolverine does!"
* Franchise/{{Batman}} (specifically, ''[[ComicBook/BatmanGothamAdventures Gotham Adventures]]'' #60):
--> '''Batman''':Joker, why?
--> '''Joker''': Why? Why? Because this is how it ''is'' isn't it? I do terrible, crazy things and you act all grim and gritty and stop me. And I go back to Arkham and you go back to doing whatever it is you do when I'm not around. Brooding all by yourself in the dark I suppose. That's just how we are. Or how we've grown to be. And it's never going to change.
** Detective Comics #823 has Batman trying to help Poison Ivy, before discovering a recording of people she tortured and killed. When he yells at her for it, she just acts amused that he's angry because he should know who she is by now.

[[folder:Fan Works]]
* As [[Manga/DeathNote Light]] explains to [[spoiler:Ryuuzaki]] in ''FanFic/ThePrinceOfDeath''-he's a {{Shinigami}}, a God of Death-[[CaptainObvious he kills people]].
* In ''[[http://www.fanfiction.net/s/5725656/1/Fate-s-Favourite Fate's Favourite]]'' and it's prequel [[Franchise/HarryPotter Tom Riddle]] regularly refers to himself as "[[TheSociopath a clinical psychopath]]" as a {{Jerk Justification|s}} whenever one of his "friends" (mostly Harry) [[AffablyEvil seems to forget he's not a nice guy.]]
* ''FanFic/InTheService''
--> "You have a habit of trying to throw yourself on swordblades."
--> "They pay us to run ''towards'' danger. We're supposed to be smart about it, but sometimes you don't have a choice. Sometimes you have to throw yourself at the swordblade and hope for the best."
* In [[http://hpmor.com/chapter/10 chapter 10]] of ''Fanfic/HarryPotterAndTheMethodsOfRationality'', the Sorting Hat refuses to answer Harry's questions by saying, "I am the Sorting Hat. I Sort children. That is all I do."
* This trope is used several times in ''Fanfic/TheUltimateEvil'' by [[WesternAnimation/JackieChanAdventures Shendu]] to explain his past villainous actions to be [[AlwaysChaoticEvil a part of his nature as a demon]]. His brother Hsi Wu also uses this trope when he re-encounters Jade after pretending to be her friend.
-->'''Jade''': You lied to me! You used me!
-->'''Hsi Wu''': Hint is in the word ''demon''.
* ''Fanfic/ShadowchasersConspiracy''; the assassin B.B. Hood has murdered the mobster Tranello Dominare, and is now confronting his fellow mobster Cattivo Fanciullo, who was also a target, but had the "good" fortune to arrive late. Naturally, Faunciullo is furious, but she has the jump on him, so he has to keep her occupied:
-->'''Fancuillo:''' Why?
-->'''Bonnie:''' Why what? Why'd I kill him? That's what I do. Keep your hands where I can see them. ''(He complies, and she goes on.)'' You ever go to a hardware store Mr. Fanciullo? Ever see how so many products have the word 'professional' on them?
-->'''Fancuillo:''' [[BigWhat WHAT?]]
-->'''Bonnie:''' Seriously, you've got your 'professional safety goggles', 'professional strength rust remover', 'professional grade car polish'Ö ''(giggles a little)'' I was in one house and garden place the other day, and saw one that ''really'' made me laugh. It was called 'Farmer Phil's Professional Fertilizer'! Professional ''dung'' that's what it was! If you don't want to use amateur-grade manure in your garden, just pick up the some of the professional cow turd. You see, the companies that make this stuff want you to think that professionals use them, and that if you use them, you'll get the same results as professionals. Tends to bring to mind the old story about a guy who tries to fix something by himself to save money, and only makes it worse. If he's lucky. People often end up in the hospital after trying do-it-yourself plumbing jobs. Uh, you listening?
-->'''Fanciullo:''' [[BileFascination Hanging on to every wordÖ]]
-->'''Bonnie:''' Long story short, if you really want professional work, you have to call a professional. And you have to make sure it's the ''right'' professional. You wouldn't go to a butcher to buy flowers any more than you would go to a florist to buy hamburger. And the same goes with killing. You have someone you want gotten rid ofÖ Get a professional."
-->'''Bonnie:''' You're a hired gun? Tell me, do you like your job?"
-->'''Fanciullo:''' Love it. It's like my mom always said, 'Bonnie, if you want to put bread on the table you gotta do the job that fits you best'. And this is what I do best.
-->'''Fanciullo:''' Does your mom know you're doing this?
-->'''Bonnie:''' Are you kidding? ''(Lifts her weapon, indicating she's done talking.)'' Who do you think taught me to do it in the first place?
* ''FanFic/TheDifferentverse'': Marble's explanation for some of Pinkie's behavior is "She's Pinkie Pie. She does that."
* ''[[FanFic/AdoptedDisplaced Wily's Wittle Wub]]'': Variant in that someone ''else'' says "It's what he does". Specifically, in the start of the ''Mega Man 8'' arc:
-->"Dad, Albert builds eight new robot masters to change a light bulb," Mega Man countered dryly. "It's kinda his thing. Unless there's something more, I'm pretty sure we can ignore it."


* In ''Disney/TheLittleMermaid'', Ursula says this almost exactly shortly before launching into "Poor Unfortunate Souls":
-->'''Ursula:''' "My dear, sweet child...That's what I do!"
* In ''Film/VanHelsing'', Igor says this when questioned why he likes torturing things.
* ''Film/CityOfEmber''
-->'''Doon:''' "How do you know that's what you should do?"
-->'''Sul:''' "... It's my job!"
Interestingly, both a comedic and a poignant example of this particular trope; comedic because it's the punchline to a repeated catchphrase ("Not my job!") and poignant [[spoiler:because it's not clear what happens to Sul after he helps Lina, Doon, and Poppy escape]].
* ''Film/MysteryMen''
-->'''Doc Heller:''' It's what the card says.
* ''Film/KingdomOfHeaven'':
-->'''Guy de Lusignan''': [[PretextForWar Give me a war.]]
-->'''Reynald''': That is what I do.
** And later, after [[spoiler:raiding a peaceful caravan and killing Saladin's sister to provoke the war]]:
--->'''Reynald''': I am what I am. Someone has to be.
* The catchphrase of Alfonso de la Pena (played by George Hamilton) in the movie ''Once Upon a Crime''.
* Mal to River in ''Film/{{Serenity}}'':
-->"You understand your part in all this?"
-->"Do you?"
-->"[[OneLinerNameOneLiner It's what I do, darlin'.]] *beat* [[MadeMyselfSad It's what I do."]]
* Kyle Reese in ''Film/TheTerminator'':
-->"You still don't get it, do you? He'll find her! That's what he does! It's '''all''' he does! [[{{Determinator}} You can't stop him! He'll wade through you! He'll reach down her throat and tear her fuckin' heart out!"]]
* Played with, with a TitleDrop, in ''Film/StarTrekFirstContact''.
--> '''Cochran:''' "So you're all astronauts, on some sort of ({{beat}}) Star Trek."
* ''Franchise/PiratesOfTheCaribbean'': Quoth Jack Sparrow in the [[Film/PiratesOfTheCaribbeanTheCurseOfTheBlackPearl first film]].
-->'''Will''': You cheated!
-->'''Jack''': ''Pirate.''
* In the SciFi channel TV movie ''The Fallen Ones'', the BigBad is a fallen angel who wants to destroy mankind with an army of Nephilim giants. The about-to-be-killed mentor gives him a TheReasonYouSuckSpeech, pointing out that such an event is mentioned nowhere in the Bible or in any prophecy, and the BigBad's entire plan is doomed to fail. The BigBad simply replies "I have to try. It's what I do." At the end of the film, in an IronicEcho, the hero says the same thing to the Big Bad after the Big Bad tells the hero that he couldn't possibly stop him.
* In ''Film/HoboWithAShotgun'', Ivan walks around in ice skates to make his kicks deadly. Slick notes, "You're going to ruin your skates." Ivan smiles broadly and replies, "I ruin ''everything''!"
* From ''Film/HotFuzz'', after Nicholas is told he's being involuntarily transferred because he's making everyone look bad:
-->'''Nicholas:''' With respect, ''sir'', you can't just make people disappear.
-->'''Chief Inspector:''' ...Yes I can. I'm the chief inspector.
* In ''A Ghost of a Chance'', the ghost of Sarashina Rokubei is asked why he haunts people. He said heís never given it any thought and tries arguing that heís a ghost, [[DefiedTrope only to be reminded heís human]].
* A genre-defining moment in ''Film/TimeBandits'' when the title characters discover that God has been onto them all along.
-->'''God''' (Ralph Richardson): "Well, I ''am'' the Supreme Being. I'm not entirely dim."
* ''Film/TheDevilsAdvocate'':
-->'''Kevin Lomax''': "Lose? I don't lose! I win! I win! I'm a lawyer! That's my job, that's what I do!"
* ''Film/FieldOfDreams'': For the entire film, Creator/JDSalinger [[{{Expy}} expy]] Terence Mann has tried to justify why [[AchillesInHisTent he doesn't write anymore]]. In the denouement, he relents.
-->'''Ray:''' You're gonna write about it?
-->'''Terence:''' That's what I do.

* Lighter Than Some, a Covenant Engineer in the ''Franchise/{{Halo}}'' novel ''Literature/HaloContactHarvest'', was ridiculously friendly. When pressed by a human-made AI on why it was helping her, it would simply reply "Lighter Than Some," which she figured meant "I help because that is who I am." It helps that Lighter Than Some was also trying to be [[spoiler: TheAtoner because it was the first Covenant to kill a human]].
* In Stephen Donaldson's ''[[Literature/TheMirrorOfHerDreams Mordant's Need]]'', one of the heroes keeps getting into duels with the BigBad's chief swordsman. He pauses to ask the swordsman why he doesn't simply overthrow the BigBad (who is portrayed as an essentially impotent dupe of his supposed underlyings.) The swordsman replies with this trope.
* ''Literature/{{Discworld}}'':
** Evil Lord Harry Dread, from ''Discworld/TheLastHero'', allies himself with his enemies the Silver Horde for one last adventure. [[spoiler:Later on he betrays them, but they don't hold it against him, because it's [[GoodOldWays tradition]]]].
** Dr. Hix, the head of the department of Post-Mortem Communications, in ''Discworld/MakingMoney'' and especially in ''Discworld/UnseenAcademicals''. It's his job to be "evil" because of his department, so whenever he does something underhanded or says something nasty he points this out, often indicating his official skull ring. (Most of the things he actually does are [[PokeThePoodle poodle-poking at worst]].)
** Lord Vetinari is also known to occasionally remind people that he's the Tyrant when they protest that he "can't do that!"
** In ''Discworld/{{Sourcery}}'', Rincewind asks Abrim "''You'' employ the slavers?" and Abrim says "I am the [[EvilVizier vizier]] after all. It is rather expected of me."
* In the fable "The Scorpion and the Frog," the titular scorpion asks the titular frog to carry him across a river. The frog is afraid of being stung, but the scorpion reassures him that if it stung the frog, the frog would sink and the scorpion would drown as well, so that wouldn't be logical. This sounds reasonable to the frog who agrees to take the scorpion. But halfway across the river the scorpion stings the frog anyway, and as they both sink the frog asks why the scorpion did it, and the scorpion replies:
-->"It's neither reason, nor logic. I'm a scorpion; it's my nature."
*** Alternate quote from the scorpion:
--> "I've never NOT stung."
** Averted in the Clan Scorpion {{Splatbook}} for the ''TabletopGame/LegendOfTheFiveRings'' role-playing game, the scorpion's reply to the frog is, "I can swim."
** [[TheFarmerAndTheViper A similar fable]] involves someone bringing a snake inside, or putting it inside his shirt, to warm it up, only to be bitten by the snake. In some variations the snake talks, and replies to the human's surprise with "You knew I was a snake when you brought me in." [[ReptilesAreAbhorrent It doesn't reflect very well on snakes]].
* In ''Literature/CodexAlera'' the Vord Queen explains this as her reason for trying to destroy Alera. It appears to be a genetic imperative for the Vord to destroy all other species. She also offers the same excuse to [[spoiler: [[ChronicBackstabbingDisorder Invidia]] for betraying her, explaining that not betraying her just isn't in her nature, and she's welcome to keep working for her.]]
** Discussed with regard to [[spoiler: Invidia, too, to the effect that she can be counted on to betray her rescuers]].
* In the ''Literature/EnchantedForestChronicles'', Telemain is often asked why he experiments with magic or wants to study the magic of wizards. As a magician, he always insistently gives this as his reason.

[[folder:Live Action TV]]
* From the ''Series/DoctorWho'' special "Voyage of the Damned".
-->'''Rickston Slade:''' Hang on a minute. Who put you in charge, and who the hell are you anyway?\\
'''The Doctor:''' I'm the Doctor. I'm a Time Lord. I'm from the planet Gallifrey in the Constellation of Kasterborous. I'm 903 years old and I'm the man who is gonna save your lives and all 6 billion people on the planet below. You got a problem with that?\\
'''Rickston Slade:''' No.\\
'''The Doctor:''' In that case, allons-y.
** From ''Nightmare of Eden'':
--->'''Romana''': [[AlienNonInterferenceClause I don't think we should interfere]].\\
'''The Doctor''': [[ScrewTheRulesImDoingWhatsRight Of course we should interfere]]! Always do what you're best at, that's what I say.
* From ''Series/{{House}}''
-->'''Dr. Foreman:''' Why are you riding on me?\\
'''House:''' It's what I do. Has it gotten worse lately?\\
'''Dr. Foreman:''' Yeah. Seems to me. \\
'''House:''' Really? Well, that rules out the race thing. You were just as black last week.
** And also:
--->'''Stacy:''' Elevate the words all you want, you were just screwing with him. Low even by your standards.\\
'''House:''' Medical screwing. It's what I do.
* ''Series/StargateSG1'' had this from its resident DeadpanSnarker
-->'''Ba'al:''' You dare mock me?
-->'''O'Neill:''' Baal, It's ''me.'' Of ''course'' I dare mock you.
-->'''Ba'al:''' You have one more day.
-->'''Gilmore:''' Is it really ''wise'' to provoke him?
-->'''O'Neill:''' It's what I do.
** In the ShowWithinAShow ''Wormhole X-Treme'', this is the O'Neill-a-like's signature line, which the actor practices:
--->'''Marlowe''': ''Hey'', it's what I do. ''It's'' what I do. It's what I ''do''.
** In another episode ("The Other Guys"), SG-1 is trying to escape a Goa'uld, and hesitate when they learn that the Stargate is guarded by a lot of Jaffa. The [[HeroWorshipper scientist with them]] points out, "But you're SG-1!" Though the trope name goes unsaid, the looks on the team's faces clearly imply it. And their actions cement it.
** Episode "Revelations": O'Neill agrees to help the Asgard while Hammond and Carter still argue over it with the explanation: "It's what we do, isn't it?"
* ''Series/{{Scrubs}}'' (JD is talking with a terminally ill patient about what death is like, which annoys Dr. Cox. When he leaves the room in a huff, the patient tells JD, "It's fun to annoy him, huh?" JD replies with a touch of deadpan, "It's what I do.")
** Turk has been known to say this in more than one occasion: "Well you know I do what I do what I do what I do."
** One episode featured an online review system for doctors, which was used as a sly dig at fan reactions to the show. With Turk he is shocked at how people dislike his catch phrase.
-->(reading about himself) "He says 'That's what I'm talking about' too much... but sometimes that ''is'' what I'm talking about..."
* ''Series/BoyMeetsWorld'': Upon warning Corey that Topanga is about to become more beautiful after going to a salon, Shawn tells him that she'll dump Corey and hang out with other beautiful people because "It's what we do."
* ''Series/{{Lost}}'': In the season 5 finale, Ben Linus admits that, [[spoiler: when he and Locke were in the cabin and Ben seemed to be having a conversation with Jacob,]] he was faking it. He says, with some regret, "ILied. ... It's what I do."
* ''Series/StarTrekDeepSpaceNine'': Kira and Dax are in a runabout trying to secure another that is out of control, and Dax just shot down Kira's more dangerous idea to attempt beaming onto it in warp.
--> '''Kira''': Have you got a better idea?
--> '''Dax''': I'm a science officer, it's my ''job'' to have a better idea.
** ''Series/StarTrekVoyager'' had this in a story told by Chakotay "Scorpion" relating to how the Borg can not be trusted in an EnemyMine situation because "It's my nature."
*** Later in the same episode, both Chakotay and Janeway are shocked to find out that it was the Borg who started the war against Species 8472. Almost as if they expected something else from the one species known to attack and assimilate everything it encounters without exceptions? Duh!
* ''Series/{{CSI}}'': Ecklie, former less-competent CSI and now head administrator, has always been a thorn in the team's side, but as administrator he gets actual moments of respect, like this one: Catherine had a memory card of evidence photos stolen from her and been grilled earlier by Ecklie for it; the photos appear on the television news.
--> '''Ecklie''': "I'll have our public information officer contact his counterpart at the station. We'll also call Judge Anderson and get a warrant for the memory card, any copies, and the name of their source."
--> '''Catherine''': ''(surprised)'' "Thank you, Conrad."
--> '''Ecklie''': "It's my job."
* From ''[[Series/BuffyTheVampireSlayer Buffy]]'':
--> '''Xander''': I never said you were gonna die! I implied that you were gonna die. It's totally different.
--> '''Buffy''': Yeah, OK. Sure...
--> '''Xander''': Besides, if you die, [[ItMakesSenseInContext I'll just bring you]] [[CleanPrettyReliable back to life]]. That's what I do.
** Also:
-->'''Teen rescued from vampire:''' How d'you do that?
-->'''Buffy:''' ItsWhatIDo.
-->'''Teen:''' But... you're just a girl.
-->'''Buffy:''' That's what I keep saying.
** After the Initiative turns out to be involved in MadScience, a disillusioned Riley Finn feels at a loss over what to do with his life. "Give me an order. It's what I do, isn't it? Follow orders?" So Buffy orders him to stop tormenting himself.
* ''Series/{{Leverage}}''
--> '''Eliot:''' You're not as useless as you look.
--> '''Hardison:''' I don't even know what you ''do''.
-->''A few scenes later, after taking out four guys by himself in the time it takes a bag Hardison dropped to hit the floor, Eliot turns to Hardison, and smiles.''
--> '''Eliot:''' That's what I do.
** Later, in the season finale, we get:
--->'''[[SixthRanger Maggie]]''': You can't just make somebody do what you want them to do.\\
'''Eliot''': Whoa!\\
''[everyone starts chuckling]''\\
'''Hardison''': T-That's what we do. I mean...\\
'''Parker''': ''[pets Maggie's head]'' You're adorable.
** In the season two episode "The Tap Out Job," Eliot drops the line again to make it clear that dishing out beatdowns is only ''part'' of what he does, explaining to Sophie why he's okay with ThrowingTheFight to protect their client:
--->'''Eliot:''' You think I'm upset 'cause I got to let this guy kick my ass? ... I can take the punishment. That's what I do.
* ''Series/{{Andromeda}}''
--> '''Captain Dylan Hunt''': Are you here to give me advice, Rev?
--> '''Rev Bem''': It's what I do.
* ''Series/MacGyver'' doesn't actually say it himself, because he's busy doing what he's doing.
--> '''Laura Fowler''': What's he doing?
--> '''Breeze''': He's tryin' to get us out of here. Just relax, that's what he does.
* From ''Series/PushingDaisies'':
-->'''Chuck:''' You can't just touch somebody's life and be done with it!\\
'''Ned:''' Yes I can. That's how I roll.
* ''Series/HerculesTheLegendaryJourneys'' - "Hercules and the Lost Kingdom":
-->'''Deianeira''': Look at yourself! Don't you have any self respect?
-->'''Waylin''': Hey, what do you want? I'm a professional slave. It's what I do!
* ''Series/{{Eureka}}'':
-->'''Carter''': Oh, wow! Personal force field! Hardly catastrophic, but very impressive. Except for the not being able to turn it off part.
-->'''Allison''': Fargo, what are you doing with that?
-->'''Fargo''': Nothing! I've never seen it before. I found it in my pocket.
-->'''Carter''': But you did turn it on?
-->'''Fargo''': Yeah.
-->'''Allison''': Why?
-->'''Fargo''': Because it's what I do?
* ''Series/{{JAG}}'': When applying to be the guardian of Mattie in 9th season episode ďA Merry Little ChristmasĒ a social service worker comes and inspects Harmís apartment.
-->'''Watley''': Do you have a firearm in the house?
-->'''Rabb''': Yes, sir. But itís under lock and key.
-->'''Watley''': Do you ever have cause to employ it?
-->'''Rabb''': Once or twice in the line of duty.
-->'''Watley''': Arenít you a lawyer, Commander Rabb?
-->'''Rabb''': Iím also a war veteran, a Naval officer and a qualified F-14 pilot.
* Happens many times in ''Series/HouseOfAnubis''
--> ''Amber'': Joy, chill, this is how we roll.
--> ''Jerome'': It's a bonding thing. Some guys go fishing....Clarkes track down priceless gems. It's how we roll.
--> ''Nina'': (About Patricia after she dumped milk on Eddie's head) Yeah...she does that.
* From the 1985 ''Series/TwilightZone'' revival:
--> ''Loser criminal'': I still got two days left! Why are you tormenting me like this?
--> ''Demon'' (with whom he's made a deal): Because, you idiot, I'm a demon! It's what I do: I torment people. That's why they call me "a demon," instead of "the Easter Bunny."
* In ''Series/PersonOfInterest'', during a flashback to just before he left the CIA, Reese's partner Kara Stanton said a line similar to this:
--> ''Kara'': This isnít just some speech. Weíre not... walking in the dark. [[HeWhoFightsMonsters We are the dark. ]]
* In the ''Series/EvenStevens'' [[TheMovie movie]], when Beans wants to use the remote control for one of Louis' pranks, Louis tells him it's not a toy, and that "this is my job - it's what I do".
* ''Series/{{Cheers}}'' did this twice at the end of one episode where Frasier brought his agoraphobia support group to the bar to acclimate them to a social situation. The group strikes up a friendship with Norm, Cliff, and Paul to the point where they mock Frasier together. Eventually, Norm convinces the group to pants Frasier. Oddly, this goes some ways towards curbing their agoraphobia, but Frasier takes the credit.
-->'''Frasier''': For I am a healer. That is what I do.\\
'''Cliff''': And we are pantsers.\\
'''Norm''': That is what ''we'' do!\\
''(Frasier runs out of the bar with Norm, Cliff, and Paul in hot pursuit.)''
* ''Series/BlakesSeven''. Vila, the only member of the crew who [[NotInThisForYourRevolution never makes a pretext of acting out of revolutionary ideals]] has an opportunity to set up on a planet with a beautiful woman far away from Blake's HopelessWar against the Federation.
-->'''Kerril:''' It's a chance to be free. You saw that place, it's beautiful.
-->'''Vila:''' But there's nothing there worth stealing. ''[Kerril sighs]'' No, listen. You know why I neutralize security systems, open safes, and break into vaults? [[MasterOfUnlocking It's because I can and most people can't.]]
-->'''Kerril:''' To satisfy your ego.
-->'''Vila:''' No, not really. It's just that, it's what makes me, me. Kerril, a thief isn't what I am, it's ''who'' I am. You wouldn't like what was left of me.

[[folder:Professional Wrestling]]
* The catchphrase of Prime Time Elix Skipper. "It aint easy being me but this is what I do!" (Jerome "Do It" Pruitt had a similar catchphrase.
* Wrestling/MarkHenry would scream "That's what I do!" after assaulting people during his "Hall Of Pain" gimmick. This is also what he said after shoving away people trying to help him after he seemingly exhausted himself [[KingPinInHisGym pulling two semi trucks and their trailers.]]

[[folder:Video Games]]
* ''Franchise/MassEffect'':
** ''VideoGame/MassEffect2'':
-->'''Batarian Plague Victim''': You helped me...why?
-->'''Commander Shepard''': It's what I do.
** Invoked to an extent if you decide to destroy the Collector Base and are a Paragon. The Illusive Man is furious that Shepard did so, forgetting that he wanted to bring Shepard back from the dead ''[[GoneHorriblyRight exactly]]'' as they were.
---> '''Shepard''' We'll fight and win without it. I won't let fear compromise who I am.
** ''VideoGame/MassEffect3'': When you encounter Mordin [[spoiler: looking over the Genophage-free female Krogan "Eve"]] he explains that he had to be the one involved because "Someone else might have gotten it wrong." In one of the multiple ways that story plays out [[spoiler: Mordin performs a HeroicSacrifice ensuring that the cure gets distributed around Tuchanka. As Shepard talks to him about what's going to happen, Mordin shrugs and says "Had to be me, someone else might have gotten it wrong."]]
* ''VideoGame/KnightsOfTheOldRepublic II'':
-->'''Atton Rand''': I'm a deserter. It's what I do.
* ''VideoGame/TheWorldEndsWithYou'':
-->'''Kariya''': Um, Villain? Screwing with you is my job.
* Early in ''VideoGame/PokemonDiamondAndPearl'', a trainer remarks "We Trainers will accept challenges anywhere! It's what we do."
* ''VideoGame/FireEmblemRadiantDawn'':
-->'''Ike''': In every battle that mattered in my life, I've always been the one left standing, no matter how slim my chances.
* ''VideoGame/TalesOfSymphonia''
-->'''Lloyd''': ...So you really are our enemy. I kept thinking - hoping - you might be good...but you're not.
-->'''Kratos''':...I should think that would be obvious at this point.
* In ''VideoGame/HitmanAbsolution'', Agent 47's opening narration ends with: ''One day, I will think of this as just another job. After all, this is what I do.'' Here the trope works both as a starting point for the plot (his target being the closest to him) and grimly describes how this plot shall unfold; as 47 methodically ''does'' [[spoiler: his main enemies, all of their family members, associates, key employees, security sub-contractors and regular staff, all of their informants and even favorite sports personalities. And, optionally, about half of standing force of the Chicago Police.]]
* In ''VideoGame/KingdomHeartsChainOfMemories'', when Larxene complains about Vexen referring to everything as an experiment, he points out, "I'm a scientist, experiments are what I do."
* Most of the mercs in the ''VideoGame/TeamFortress2'' videos say some version of this as an explanation as to why they have their positions.
* ''VideoGame/BatmanArkhamKnight''. After Batman saves her life, Catwoman drops a big hint that [[RescueSex they should go to a hotel together]], but Batman says there's still work to be done.
-->'''Catwoman:''' Do you ''ever'' take the night off? [[DoubleEntendre Do you ever take the suit off?]]
-->'''Batman:''' Not on nights like this, Selina. It's what I do.
-->'''Catwoman:''' Fine! I guess I'll hit an art gallery or two while the big bad Bat's distracted.
-->'''Batman:''' You're not going to thank me?
-->'''Catwoman:''' Why? [[SarcasmMode It's what you do.]]

[[folder:Web Comics]]
* ''Webcomic/{{Chainsawsuit}}'' parodies this [[http://chainsawsuit.com/2009/04/17/strip-198/ here]] with Hit Character, a character who is nothing ''but'' this trope.
* ''Webcomic/DominicDeegan'', just before Klo Tark sends Dominic off to battle Celesto Morgan at the end of the "Storm of Souls" StoryArc, and conjures up a set of clothes like what he normally wears:
-->'''Dominic''': Heh...you read my mind.
-->'''Klo Tark''': It's what I do.
* In ''Webcomic/{{Sinfest}}'', after Fuschia burned her for being normal, [[http://www.sinfest.net/archive_page.php?comicID=3333 Monique defends normal as her nature, and Fuschia, setting things on fire as her nature.]]
* ''Webcomic/SluggyFreelance'':
** In the "Oceans Unmoving" story arc, Honest Stu always speaks his mind literally, to the point that he points out the irony that Calix and not he has to WalkThePlank when he could also have been blamed. In the next panel, he's standing next to Calix on the plank.
--> '''Calix''': You should learn to talk less.
--> '''Stu''': I gotta be me.
** And also this:
--> '''Gwynn''': Let me be the hero for once!
--> '''Riff''': Sorry ma'am, I'm union. *[[BigFreakingGun shoots]] the huge demon [[BuffySpeak thingy]] [[MoreDakka a lot]]*
* Rusty and Co.'s Madeline the Paladin.
-->"It's what Paladins do." (Save people,[[spoiler: make sacrifices]] etc.)

[[folder:Web Original]]
* Danielbeast in the ''WebVideo/Lonelygirl15'' episode "Lying Bastards": "I'm going to break into Alex's house. It's all I know how to do really, I guess."
* The ''[[WebAnimation/HowItShouldHaveEnded How Superman Should Have Ended]]'' ends with Batman and Superman chatting in a cafe:
--> '''Batman''': I'm Batman.
--> '''Superman''': I know you are.
--> '''Batman''': It's what I do.
--> '''Superman''': I know. You say that '''a lot'''.
--> '''Batman''': I carry things on my belt. 'Cause I'm Batman.
* In ''WebVideo/YuGiOhTheAbridgedSeries'', Kemo has two main traits. The first is saying anything about his hair. (It is very strange, even for anime hair.) The second is using the phrase "Attention, Duelists!" to begin every line of dialogue that he says. This is because he works as a tournament announcer, so it makes sense. But one time, when he was alone with Seto Kaiba and used the CatchPhrase, Kaiba questioned why he said it. Kemo responded by quoting this trope by name.
** In "Concrete Giraffes", a parody of ''WebVideo/MarbleHornets'' and ''Franchise/TheSlenderManMythos'', [[DaChief Police Chief Kurt Russel]] asks why Jack Slenderman ([[InsistentTerminology the Cop Who Does Not Play by the Rules]]) ate all the children he was supposed to be rescuing. He replies with "It's what I dooo!"

[[folder:Western Animation]]
* ''WesternAnimation/JusticeLeague'' had Darkseid betraying the Justice League [[spoiler:and Brainiac in a fake EnemyMine {{plan}}. When Brainiac]] says, "You deceived me." Darkseid replies coolly, [[MagnificentBastard "It's what I do."]]
** In another episode, the AffectionateParody of golden age heroes ''Legends'' had the Justice Guild contemplate that defeating the enemy would in fact, kill them as well. The immediate reply they gave was, "We gave our lives once for this city."
** Doomsday, on his second appearance. When Superman asks him why he wants to kill him, his reply is "[[LaserGuidedTykebomb It's what I am. I don't care 'why'.]]"
* ''WesternAnimation/TransformersAnimated'' had [[spoiler:Omega Supreme]] say this in a HeroicSacrifice.
-->[[spoiler:'''Omega Supreme''': I am programmed to protect, and sacrifice if necessary.]]
* ''WesternAnimation/TheVentureBrothers''
-->'''Venture:''' Oh, that's it, you really know how to push my buttons, don't you?\\
'''Monarch:''' I'm your arch enemy! It's what I do! It's my thing!
* ''WesternAnimation/ThePowerpuffGirls'':
-->'''Blossom:''' We're going to fight crime!\\
'''Buttercup:''' That's what we do!\\
'''Bubbles:''' Duh!
** Buttercup says this when she's dressed as a monster in the rainy day episode of ''Powerpuff Girls'' "I'm a monster and I'm eating Joe! I do that."
* ''WesternAnimation/{{Chowder}}''
-->'''Truffles:''' You did it again, honey. You set the house on fire, again!\\
'''Mung:''' It's what I do, woman. It's what I do.
* [[Disney/{{Aladdin}} The Genie]], after a DudeNotFunny line in one of the ''[[Franchise/DisneyAnimatedCanon Aladdin]]'' sequels:
-->'''Genie:''' (laughing) A joke! (pauses) I do that.
** He also saves a genie hunter's life in one episode of the series, and says that helping people he doesn't like is [[ChronicHeroSyndrome a good-guy thing.]]
* Spoofed in a ''WesternAnimation/RobotChicken'' parody of ''Film/KillBill'' where Jesus takes the place of the Bride. When he takes on the one eyed character of Elle Driver, he jabs her in her bad eye, healing it and returning her sight. She thanks him in surprise, and he smiles and says "It's what I do"... then immediately cuts her in half with his sword.
* ''WesternAnimation/AvatarTheLastAirbender'': When [[ItMakesSenseInContext Sokka's trapped in a hole]], he says, "Okay, Karma person or thing, whoever's in charge of this stuff. If I can just get out of this situation alive, I will give up meat... and sarcasm. Okay? That's all I got. [[LampshadeHanging That's pretty much my whole identity]]. Sokka, the meat and sarcasm guy."
-->"But I'm willing to become Sokka the veggies and straight talk fellow. Deal?"
* Number 5 of the ''WesternAnimation/CodenameKidsNextDoor'': "We're the Kids Next Door. We save kids. That's our job!"
* ''WesternAnimation/DannyPhantom'':
-->'''Clockwork''': That's the problem with you Observants -- all you do is ''[[ExactlyWhatItSaysOnTheTin observe]]''.
* SmugSnake Slade pulls off one in ''WesternAnimation/TeenTitans'' when Robin confronts him over his role in bringing about an apocalypse that's left the world in ruins (don't worry, [[ResetButton it gets better]])...
-->'''Robin:''' But you played a part. And just like everything else you've ever done, it's made people suffer.
-->'''Slade:''' It's what I do best.
** One-off enemy The Source, in explaining an utterly pointless invasion scheme to Beast Boy involving kidnapping cows and blowing up the Earth: "It is our way."
* ''WesternAnimation/AmericanDad'' had this:
-->'''Steve:''' Dad! I can't believe you lied to me!
-->'''Stan:''' Really? Huh. It's kinda my whole bit.
* ''WesternAnimation/JackieChanAdventures'' - "Shanghai Moon"
-->'''[[GravityMaster Tso Lan]]''': You dare interrupt me in my moment of triumph?
-->'''[[TheHero Jackie]]''': It's what I do.
* An episode of ''WesternAnimation/TheBatman'' saw the Dark Knight fall under the sway of Spellbinder, nearly handing over the episode's MacGuffin [[spoiler: and revealing his identity]] in the process. When Bats is snapped out of it and Bats pulls the MacGuffin away, Spellbinder voices his disbelief that the hero had been faking. Quote the Batman, "It's what I do!" It was quite convincing.
* The unaired pilot ''Wacky Races Forever'' had Dick Dastardly and Muttley in their Mean Machine some three yards away from the finish line--they are under orders from another figure to win the race, and Muttley points out the finish line. From Dastardly:
-->No, Muttley, we ''can't'' win fairly. We are villains. Ergo, we ''have'' to cheat!
* Hermes' Bureaucrat Song in ''WesternAnimation/{{Futurama}}'' is practically an anthem for why he does what he does. Why is he an ObstructiveBureaucrat who is "anal retentive and weird", who "treats people like swine and makes 'em stand in line"? It's what he does!


[[folder:Real Life]]
* "''Film/BonnieAndClyde'' -- We [[BankRobbery Rob Banks]]." Spoofed in the Warner Bros. cartoon ''Bunny & Claude''--"We Rob Carrot Patches."
* Miss Manner recounts how she once asked a small person in her charge, "How can you be so childish?" and had to admit the justice of the answer, "I'm a child."
* Los Angeles Lakers point guard Derek Fisher, after hitting yet another game-winning three-pointer: "[[http://www.slamonline.com/online/nba/2012/01/derek-fisher-on-game-winner-this-is-what-i-do/ It's what I do]]."