->''(sounds of fighting outside the chapel)''
->'''The Impressive Clergyman''': [[ElmerFuddSyndrome So tweasure your wuv...]]
->'''Prince Humperdinck''': SkipToTheEnd.
->'''Clergyman''': Have you the wing?
->'''Buttercup''': Here comes my Westley now.
->'' (cut away for a bit to Wesley, Inigo and Feznik battling through Humperdink's guards)''
->''(...)''
->'''Clergyman''': ...and do you,Pwincess Buwwercup...
->'''Humperdinck''': Man and wife! ''Say man and wife!!''
-->-- ''Film/ThePrincessBride''

According to this trope, a wedding becomes official when the bride says "I do", or the priest says "I pronounce you man and wife." Any character wishing to [[SpeakNowOrForeverHoldYourPeace break up this wedding]] must do so before these words are uttered. There is also the implication that once the couple is married, it's permanent, and any [[CleaningUpRomanticLooseEnds romantic loose ends]] must be discarded.

Once upon a time, this was true. Historical works can therefore use it with full force for various historical eras and fantasy worlds based on them. (But make sure that it's one that uses this ceremony.) Even in those days it could often be dissolved, with some difficulty, as long as the marriage was not actually consummated.

But nowadays, the boring truth is that a marriage becomes "legally binding" either when the proper legal authorities (i.e. local government) process the marriage paperwork, or when the marriage certificate is signed by the officiant. The wedding ceremony may have no bearing on the legal status of the marriage, although in certain jurisdictions the parties do have to take certain specific oaths for a marriage to be valid. And marriages can be canceled in most localities. (If you're in an unhappy marriage, consult your local laws for details.)

In a few religious traditions, marriage begins exactly at the moment the couple have both said "I do" or the priest says "I pronounce you man and wife". This however has nothing to do with the legal status of the marriage. It was once true that consummation was necessary for a marriage to be fully legal, and unconsummated marriages could easily be annulled: this is less common in modern times, when annulment is more likely to be tied to the length of the marriage or any allegation of fraud than whether it was consummated.

This should be a DiscreditedTrope, but it's not, probably because it's incredibly useful to writers of romantic stories. A wedding imposes a deadline for the consummation of a relationship. A deadline during the wedding allows the protagonist to make an exciting race against the clock to win back his or her beloved at the last possible second. Furthermore, a wedding ceremony makes it easy to put all the main characters in one place for the story's riveting conclusion.

In short, the WeddingDeadline is something that viewers seem quite [[WillingSuspensionOfDisbelief willing to suspend disbelief]] over.

May come into play in a YouHaveWaitedLongEnough plot.

See SpeakNowOrForeverHoldYourPeace, SkipToTheEnd, and AltarTheSpeed.
----
!!"I do" Examples

* In the ''{{Futurama}}'' episode "A Bicyclops Built For Two", Leela gets to "I d--" before Fry barges in, and shows that Alkazar is a shape-changing green cockroach, who has weddings to four other female freaks scheduled for the same day. It makes alot more sense when Alkazar explains that he rented the tux which shifts to different sizes with him and is presumably expensive.
** Fridge Logic: He wouldn't have needed a tux that changes shape if he hadn't scheduled the weddings for the same day.
*** Counter Fridge Logic: How would he have gotten normal suits in those shapes? Even if he could get ones tailored to those shapes, he would have had to ''buy'' them, not rent, and it might have ended up being even more expensive than renting a shapeshifting one for a single day.
* In ''[[RobinHoodMenInTights Robin Hood: Men In Tights]]'', Marian says "I do..." and then appends "...NOT!" as the titular hero[[spoiler:'s rescue party]] charges into the scene.
* ''WesternAnimation/TeenTitans'': Starfire uses the same, "I do... ''not!''" line during an ArrangedMarriage (and a phony one, at that) after Robin does his ''TheGraduate'' [[TheGraduateHomageShot parody]].
* In ''Film/FlashGordon'', while being married to Emperor Ming Dale Arden also uses the "I do NOT!" line.
* ''Literature/JaneEyre''
* In the Richard Burton/Elizabeth Taylor film version of ''Theatre/TheTamingOfTheShrew'' (and probably in a lot of stage versions as well), Katherine attempts to throw an "I do NOT" but Petruccio [[ShutUpKiss stops her mouth with a kiss]] after she says "I do."
* ''Series/{{Friends}}''. Rachel plans to stop Ross from marrying Emily and literally says that it's "not over until someone says 'I do'." Phoebe, trying to talk her out of it then desperately starts yelling "I do! I do!"
* ''TheSarahJaneAdventures''. In "The Wedding Of Sarah Jane Smith", quite a lot will happen if Sarah Jane says "I do.", [[spoiler:as with those words she would also bend to the Trickster's will.]]
* ''Series/ADifferentWorld'': Dwayne Wayne stops his future wife's wedding to convince her to marry him. It worked.

!!"I now pronounce you man and wife" Examples

* Possibly in ''RobinHood: Prince of Thieves''. The Sheriff forces Marion through the ceremony, even answering the vows for her. The Bishop performing the ritual quickly rattles off the pronouncement (while the Sheriff is trying to force himself on Marion). When he gets to "man and wife", Marion turns to the Bishop and yells, "''How could you?!''"

!!Other Examples

* ''Film/ThePrincessBride'' actually does both: during the ceremony, Humperdinck urges the slow-talking priest to hurry up and get to "man and wife." But after Westley rescues Buttercup, Westley says the marriage isn't official because she didn't say "I do."
** Averted in the book. Humperdink really DOES marry Buttercup. Westley steals her away anyway. (His reasoning goes along the lines of "if you didn't mean it, it doesn't count".)
* In ''Film/{{Spaceballs}}'', the priest, annoyed at the numerous interruptions, says "Okay, [[SkipToTheEnd this time we'll do the short short version]]! Do you?" "Yes!" "Do you?" "Yes!" "Good! You're married, kiss her!"
** And one of those interruptions is Princess Vespa stalling at saying "I do" just long enough for Lone Starr to burst on to the scene and declare, "NO, SHE DOESN'T!" (And then saying that he's a prince and thus able to marry her.)
* ''{{Shrek}}'' seemed to imply that the kiss was what sealed the deal, as the main character barged in after the I do's. In the end, this mattered little, as the groom was devoured by a dragon less than five minutes later. The trope was also lampshaded when Donkey stops Shrek from barging in, claiming that they need to wait until "Speak now or forever hold your peace" for dramatic effect. Shrek humors him until they realize the ceremony has already passed that part, and barges in anyway.
** Fiona was worried about the kiss rather than the ceremony or the legality of the marriage, because her curse would cause her to permanently take the form of her "true love's first kiss"... and she (rightly) believed that Farquuad would refuse to kiss her after she morphed into an ogre at sunset.
** Technically they were married, but Fiona was immediately widowed.
* In ''Three Men And A Little Lady'', two of the protagonists only manage to reveal the truth about Mary's mother's fiancee to her after she said "I Do.". When he points this out, [[spoiler:the priest reveals himself to be the third protagonist in disguise, essentially making the whole wedding (supposedly) null and void.]]
* In TeresaEdgerton's second {{Celydonn}} trilogy, if a marriage is not consummated and the couple are not living together, it can be broken by a year's separation. Since [[TheWisePrince Tryffin]] and Gwenlliant are living apart at the beginning of ''The Grail and the Ring'' while she is receiving magical training, and have had InnocentCohabitation until then, they must get back together by midsummer or they will no longer be married. [[spoiler: They don't, but since they both agree that they still want to be married, they just have another ceremony as soon as possible.]]
* On ''WesternAnimation/AdventureTime'' [[AnIcePerson the Ice King]]'s wedding involves a weird Ice Kingdom ritual where he's lowered down to his bride by a rope, the marriage being official as soon as his beard touches her. In the end he winds up marrying [[spoiler:Jake]] [[AccidentalMarriage by mistake]], which is promptly annulled.
* ''[[Literature/VorkosiganSaga Captain Vorpatril's Alliance]]'' plays it straight in Ivan and Tej's CitizenshipMarriage, with a note that Barrayaran law, being highly [[IGaveMyWord oath-oriented]], has [[JustifiedTrope a couple marry themselves before witnesses and it's automatically official]].
* In one episode of ''Series/LostGirl'', an amnesiac Bo has to be prevented from going through a marriage ceremony with her unprincipled lover, which will bind them together for a hundred years. Fortunately, while her friends aren't in time to stop her saying "I do," the ceremony's not complete until she puts on the ring, and they manage to prevent that.
* In ''KrisLongknife Defender'', the deadline for Kris and Jack is to get married before their superiors can cut them their new orders, which they (Correctly) suspect will place them in the same chain of command - regulations for their Navy prohibit relationships between people in the same chain of command, but not placing couples who are already married into the same chain of command.

!!Aversions, Subversions, and Counterexamples

* In the comic strip ''BloomCounty'', the Opus/Lola Granola StoryArc ended with the two actually getting married. But they agreed to annul it minutes later: the wedding kiss revealed that they had incompatible noses, which knocked Opus out cold and gave him a nightmare about his future with Lola - in the far-off {{Zeerust}} age of 2007 A.D., no less!
* In the movie ''TheWeddingSinger'', the marriage is broken up on the couple's flight to Las Vegas.
** Though it's played fairly straight in the musical of the film, as Julia and Glen's wedding in Las Vegas is ended when Robbie crashes it.
* In ''ScaryGoRound'', the wedding of Erin and Bob Crowley is the key that starts the apocalypse. Shelley comes in too late to stop the marriage, but when she learns that the marriage hasn't been consummated yet, she simply texts her lawyer and has the marriage annulled, banishing the army of demons back into hell.
* Spoofed in ''The Lonely Guy'', where Steve Martin's character makes it to the church just in the nick of time, pours out his heart to the gal of his dreams and begs her not to marry. Turns out he was in the wrong church, and he misses the deadline altogether. D'oh!
** And while the bride was a total stranger, the speech did give her pause to take a long, hard look at the marriage and got her to decide ''against'' it at the last moment.
* Subverted to great effect in the SherlockHolmes story "The Solitary Cyclist," in which the detective and Dr. Watson, accompanied by [[TheAtoner one repentant villain]], barge in on the other, who is forcing marriage on the virtuous heroine who'd refused them both. "[[YouAreTooLate You're too late!]] She's my wife!" "[[PreMortemOneLiner No... she's your widow!]]" ''Bang''. Once they get everybody sorted out, Holmes noted that the whole thing was void anyway, since the clergyman accomplice had been unfrocked; and that, "in any case, a forced marriage is no marriage, but it is a very serious felony, as you will discover before you have finished."
* At Mark's wedding in ''PeepShow'', [[spoiler:Mark explains to Sophie that even if she had said "I Don't", they'd already filled in the paperwork and were therefore technically already married]].
* A storyline in DetectiveConan revolved around an arranged date between the policewoman Sato and the snobbish superintendent Shiratori. Another policewoman, Yumi, tried to get Sato out of it by sending her "help", who Sato correctly guesses to be the shy Takagi, who also loves her. The brash Sato makes a deal with Shiratori that if Takagi doesn't show up before sunset, she will marry him. Unfortunately, Takagi is involved in a robbery case, with three witnesses all giving contradicting details on the culprit. Luckily, the main character gives Takagi some tips that helps him solve the case... but the culprit escapes, forcing him to give chase... a few minutes before sundown. [[spoiler:In the end, he never actually makes it to the restaurant that Sato and Shiratori are at; the main character uses a decoy to trick both of them into thinking that Takagi actually showed up, then lures Sato to where Takagi actually is.]]
* Subverted in Bernard Cornwall's ''Lords of the North'' where Uthred escapes from slavery to find that his fiancee has been married off in his absence, but that the marriage has not yet been consummated. He then forces one of the monks who has custody of her to admit that the marriage requires ceremony ''and'' consummation and she is, therefore, not actually married yet.
* I would also assume that this is how Young Lord Lochinvar justifies stealing his 'fair Ellen' from her wedding reception...
* ''VideoGame/FinalFantasyX'' has a rather curious case. The heroes try and break up the wedding between the heroine and the [[IHaveYouNowMyPretty villain]] before the ceremony goes through. But they get caught and it appears to anyways. This leaves one wondering how official a marriage can be when one of the participants [[spoiler: is already dead. Is it illegit or does it make Yuna an Insta-Widow?]].
* Something similar to the above example occurred in ''WesternAnimation/CorpseBride'', but in this case it was decided that the marriage was void since the wife was already dead (since the vows are binding only "until death do you part.") It was then concluded that, in order to make the marriage binding, the groom had to commit suicide at some point during the ceremony. [[spoiler: She stops him at the last minute from committing suicide so he can marry his true love and passes on.]]
* In the first book of ''ASeriesOfUnfortunateEvents'', Violet manages to invalidate her marriage to Count Olaf (who was blackmailing her by threatening her infant sister) by not signing the marriage certificate correctly [[spoiler: - specifically, by signing it with her left hand, not her right]]. She neglects to inform him of this loophole until after he has had her sister released (one wonders why she didn't simply get Sunny released and then get the marriage annulled on grounds of being forced).
** Pretty much all the adults in these books are either evil, [[AdultsAreUseless spineless wimps, or utterly clueless]], remember? Also, while it's a bad excuse, it was clear the adults were looking for ANY excuse whatsoever to annul it...but the 'forced' part must not have been on the books.
*** Also bear in mind that she is fourteen at the time; while she was capable of working out a linguistic loophole, she probably did not have extensive knowledge of marital laws.
* ''TheGraduate'' has Ben arriving at the church ''just'' as the minister is pronouncing Elaine and her beau as man and wife. But when he [[TheGraduateHomageShot screams her name repeatedly]], she decides to ditch her new hubby and [[RunawayBride take off with Ben instead]].
* Creator/HaroldLloyd's ''Film/GirlShy'' climaxes with an epic Wedding Deadline race that greatly resembles that of ''The Graduate'', 44 years later.
* A piece by ''TheOnion'' parodies this: "[[http://www.theonion.com/articles/im-sure-that-outofcontrol-waterskier-will-avoid-ou,11403/ I'm Sure That Out-Of-Control Water-Skier Will Avoid Our Outdoor Wedding]]".
* ''{{Aveyond}}: The Lost Orb'' has a complicated variation. Edward and [[MultipleEndings his bride]] exchange vows, the priest pronounces them husband and wife... ''then'' Mel runs
* In ''ThePillarsOfTheEarth'' Jack tries to stop the wedding between Aliena and Alfred, but for this, he needs to escape the monastery. He ultimately fails, and while his mother actually goes there and curses the marriage, she doesn't stop it.