->'''Kat''': Now say something witty to the Enigmarons and finish the mission!\\
'''Antimony''': Do I have to?
->-- ''GunnerkriggCourt''

->''"'''Enough is enough!''' I have '''had''' it with these motherfuckin' snakes on this motherfuckin' plane!"''
->'''[[SamuelLJackson Neville Flynn]]''' , ''SnakesOnAPlane''

Any line of dialogue which demonstrates remarkable wit and composure for someone in that particular situation. Whereas a normal person would freak out upon finding (for example) a pack of dogs mauling a dead lawyer, the main character gives a wry smirk and says, "Well, I always said the legal profession was going to the dogs," thereby proving that they're Just That Cool.

Differs from a CatchPhrase in that repetition is a key component of the CatchPhrase. The OneLiner is typically used once and never again.
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!!Tropes

* BondOneLiner, just after killing someone.
* FacingTheBulletsOneLiner, just before a BolivianArmyEnding.
* GrissomOneLiner, used to segue into a commercial break.
* IncomingHam, when a character enters the scene.
* OneLinerEcho, when it is reinforced by immediate repetition by others (non-immediate repetition by the same character elevates it to a CatchPhrase).
* [=~One Liner, Name... One Liner~=], when it is addressed to a character and then repeated by the ''original'' speaker.
* PreAssKickingOneLiner, just before a fight.
* PreMortemOneLiner, delivered just before the killing blow; in other words, used to ''end'' fights.
* SchiffOneLiner, used to end an episode in a rather dark way.
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<<|{{Dialogue}}|>>
<<|NarrativeTropes|>>