[[quoteright:348:[[WebVideo/TheNostalgiaCritic http://static.tvtropes.org/pmwiki/pub/images/BLAM_ferngully.jpg]]]]

->''"This is [[TropeNamer named after]] [[http://www.youtube.com/watch?v=P5iZE6-a9jU the random musical number sung by a big-lipped alligator]] towards the end of the film'' WesternAnimation/AllDogsGoToHeaven. ''A scene that comes [[AssPull right the fuck out of nowhere]]; has little to no bearing whatsoever on the plot; is [[ChewingTheScenery WAY over the top in terms of ridiculousness]], [[MakesJustAsMuchSenseInContext even within the context of the movie]]; and after it happens, [[WhatHappenedToTheMouse no one ever speaks of it again]]."''
-->-- '''WebVideo/TheNostalgiaChick''', explaining the term after [[http://www.youtube.com/watch?v=WJRBPlnBg24 using it to describe the singing goanna scene]] from ''WesternAnimation/FernGully''

A NonSequitur is a bit or line of dialogue that is intentionally out of place, usually designed to elicit a comedic reaction. They have no actual bearing on the plot, although they are staples of characters who are part of their own little world like the {{Cloudcuckoolander}} or TheDitz.

Springboarding from there, we find the Big-Lipped Alligator Moment, or BLAM ([[FunWithAcronyms an appropriate term in itself,]] as they tend to show up with all the subtlety of a shotgun blast). This is a very bizarre scene in an otherwise normal story that veers off into the surreal or strange. Upon exiting that scene, the plot continues on like it never happened.

There are three precise criteria for measuring a Big Lipped Alligator Moment:
# [[AssPull Appears out of Nowhere]] --
** The plot comes to a halt as the scene takes its spot in the running time. There can't be any Foreshadowing and it can't take a logical place in the plot (e.g., coming across a trap while StormingTheCastle is not random, but expected.)
# [[MakesJustAsMuchSenseInContext Strange in Context]] --
** The fictional setting, characters and narrative devices have to be at odds with the scene. In that regard, WorldBuilding moments, strange personalities, and a surreal story structure that can explain its origin are exempt from this trope. For instance, AllJustADream gives a good reason, as using the trope tends to go hand-in-hand with the surreal (although for some genres and franchises, using the scenario of AllJustADream itself may qualify).
# Never Goes Anywhere --
** Most scenes have components that are relevant to future scenes and the overall plot, following TheLawOfConservationOfDetail. Not so for a [=BLAM=], which will be swept under the rug and forgotten as quickly as possible; removing it would not create any {{Plot Hole}}s. Compare WackyWaysideTribe.

Being merely inconsequential or strange is not enough. All three criteria have to be met. If a scene is considered "borderline", it is likely not an example. [=BLAMs=] are often {{Level Breaker}}s as well.

The Trope Namer is ''WesternAnimation/AllDogsGoToHeaven'', and the TropeCodifier is WebVideo/TheNostalgiaChick and WebVideo/TheNostalgiaCritic from their review of ''WesternAnimation/FernGully'' while commenting on another example. In the trope naming scene (in a movie that mostly deals with talking dogs, the afterlife, and mafia undertones, somewhat strange itself) a big-lipped, Cajun-accented, bone-through-the-nose alligator takes a liking to the main character Charlie and forces him to sing a duet "Let's Make Music Together". While the alligator goes on to have a role in the plot later on, Charlie is noticeably very confused over the whole song.

The Nostalgia Critic and The Nostalgia Chick have had to post supplementary videos on this topic, due to confusion on what does and does not count. One is that it is a moment, not a subplot or entire episode (For that we have BizarroEpisode). And they emphasized that it has to go against what is considered normal.

Context and the nature of the situation matters immensely in comparison to the sliding scale of realism used by the story in question. This trope can be objectively observed but because of the dissonance between the audience and the characters (the audience doesn't live in the exact same world, so what is strange to the audience might be commonplace for the characters) this often ends up as a debatable topic. Even the trope namer has been subject to debate.

Adding to the controversy is the fact that, in certain circumstances at least, belief in this trope could be considered an example of the PerfectSolutionFallacy; defined in this case as excessive pedantry about adherence to the {{Law Of Conservation Of Detail}}. Aside from anything else, there are works where irrelevant or obfuscating details are actually important; pare down the details too much in a murder mystery, for instance, and you risk making the plot obvious from the outset. Being excessively paranoid about avoiding this trope or conserving detail, also potentially puts constraints on creativity in general terms, as well.

Compare these other tropes and consider whether an example would better fit there:
* BrickJoke: It comes out of nowhere, seems like it has no relevance at first (or only marginal relevance), disappears for awhile then comes back like a boomerang later on at some random point and becomes relevant, even if only to a very minor plot element. If it does so more than once, it becomes a RunningGag.
* CutawayGag: A throwaway joke that has a {{framing device}} of a character reminiscing of an unrelated past story or an ImagineSpot.
* DisneyAcidSequence: A surreal visual and musical scene that may or may not have plot relevance; because of the occasional lack of relevance there tends to be overlap. Is usually just a chance for animators to [[ShownTheirWork Show Their Work]].
* GiantSpaceFleaFromNowhere: A sudden boss encounter, in video games, that has nothing to do with the plot.
** DiabolusExNihilo: The equivalent of this outside video games.
* GainaxEnding: A similarly bizarre MindScrew ends up being the resolution to the plot!.
* HowUnscientific: A moment that breaks Genre Consistency, but may or may not break consistency of tone.
* NonSequitur: A line of dialogue that doesn't follow the regular or normal conversation.
* NonSequiturThud: A line of dialogue spoken by a character just before they go unconscious (or sometimes [[TalkingInYourSleep when waking up from a dream]]).
* ThatRemindsMeOfASong: When a character suddenly starts singing a song that has no plot relevance.

Also compare WhatHappenedToTheMouse, AbortedArc, MakesJustAsMuchSenseInContext, and FlashMob (a RealLife BLAM). If the BLAM is used to sell products, it may be a ProductPromotionParade.

Often confused with an ArcadianInterlude. Also has nothing to with ''WesternAnimation/KaBlam'' or BoomHeadshot.
!![=BLAMs=] By Medium:
* BLAM/AnimeAndManga
* BLAM/ComicBooks
* BLAM/FanWorks
* BLAM/{{Film}}
* BLAM/InteractiveFiction
* BLAM/{{Literature}}
* BLAM/LiveActionTV
* BLAM/{{Music}}
* BLAM/ProfessionalWrestling
* BLAM/PuppetShows
* BLAM/TabletopGames
* BLAM/{{Theater}}
* BLAM/ThemeParks
* BLAM/VideoGames
* BLAM/{{Webcomics}}
* BLAM/WebOriginal
** BigLippedAlligatorMoment/YouTubePoop
* BLAM/WesternAnimation


* You would think that it's impossible for anything as short as a TV ad to have a BLAM, but [[http://www.youtube.com/watch?v=qhm-22Q0PuM this ad]] for Herman Cain (at the time a candidate for the [[AmericanPoliticalSystem 2012 Republican nomination for President]]) proves us all wrong. It features Cain's Chief of Staff Mark Block talking about what Cain hopes to achieve by running...and then, towards the very end, out of nowhere, [[RandomSmokingScene a shot of him randomly taking a drag off his cigarette]]. Combined with the closing shot of Cain slowly turning to the camera and slooooooowly smiling, the ad [[MemeticMutation quickly went viral]].
* During Creator/{{Nintendo}}'s November 13, 2013 Nintendo Direct, the first shot of Reggie Fils-Aime's office is of his giant stuffed Mii head resting in a chair. The camera then pans over to the real Reggie off to the side as he begins his preview of upcoming games. The Mii head has no connection to the games being shown and is never seen again in the Nintendo Direct.

* In the NorseMythology tale of "The Death of Baldur", there is a part where the Ęsir are gathered at the funeral pyre of the recently-killed Baldur, when a dwarf shows up. The dwarf, named Litr, casually strolls in when Thor notices him and [[BlackComedy punts him into the funeral pyre]]. The tale then resumes as normal and the dwarf is never mentioned again.

[[folder:Real life]]
* These happen ''all'' the time in real life due to its general lack of a coherent plot.
* According to the Chaos Theory, life itself.
* As mentioned above, Flash Mobs.
* [[http://www.youtube.com/watch?v=tWdgAMYjYSs The Max Headroom Incident]]
** This is true for almost any signal intrusion or broadcast piracy incident. While some attempt to convey some sort of message, a good number are [[{{Troll}} intrusions for the sake of intruding]], such as the above-mentioned incident or simply designed to scare people.
** The second one also happened while an episode of Series/DoctorWho was being run. Just picture this: You're watching the show, and then suddenly, a guy wearing a Max Headroom mask just appears on the screen and does all these bizarre and offensive things. Then back to Doctor Who as if nothing happened. And you're left sitting in front of the TV thinking "What the Hell?"
* Dreams. And 99% of the time, not only do you not mention them ever again, but you forget that they even happen.
** [[Webcomic/{{xkcd}} Randall]] has mentioned that in [[http://xkcd.com/203/ several]] [[http://xkcd.com/430/ webcomics]].
* Musical numbers and certain performances in film and live-action TV up until the late sixties. The plot would stop for a performance, then when the performance was over, the plot would go on as though nothing had ever happened. This was done to make it easy to cut a number for certain markets that might find it offensive. For example, black performers might be cut for certain Southern states.
* At a televised golf tournament, Tiger Woods went to tee off, surrounded by hundreds of spectators who were quiet per standard gold procedure. As soon as the thwack of the club was heard and Woods' ball was airborne, someone in the gallery shouted "MASHED POTATOES!" - the TV announcers were bewildered by it.
* In the 2013 National League Championship Series, before the start of Game 6, Cardinals pitcher Joe Kelly and Dodgers utility player Scott Van Slyke got into a 12-minute staring contest. Both men remained standing on the playing field outside their dugouts, not having moved from their positions where they stood at attention for the national anthem. This went on while the grounds crew was busy getting the field ready, and Joe Kelly's teammates were going through final warm ups on the field. The home plate umpire finally had to gesture for them to get back into their dugouts.
* [[Music/JohnLennon "I have something very important to tell you all. ]][[DeadpanSnarker I am Jesus Christ. I'm back again."]] Came up out of the blue while the Beatles were at lunch one day in 1968, and never brought up again.

[[folder: Roleplay]]
* Roleplay/DinoAttackRPG has the scene where [[spoiler: [[{{Jerkass}} Trigger]] dies and ends up in a strange hotel run by a strange character known simply as "the owner" who may or may not be a pervert with blue hair and no pants. He then leads Trigger through a variety of places in the hotel, all occupied by characters who have died in the RPG and construction workers allegedly responsible for the Big Bang, before he realizes that for he temporarily has to share a room with his arch-rival Silencia Venemosa]]. Though part of the initial build-up had been used before (and was intended to be satirized here), this sequence was never mentioned again and is so strange even by the standards of the RPG that its status in canon isn't even 100% clear.
** There was also the part where some people became Toa from Bionicle, and others started using exo-suits. It became known as the "Bionicle meets Exo-Force RPG" and was never spoken of again, except in hushed whispers in dark street corners.

[[folder:TV tropes]]
* The rather bizarre argument that used to be in the TV Tropes section of the TheFourthWallWillNotProtectYou article.
--> Oh, and that image at the top of the page isn't just a picture, Pinkie Pie actually is crawling out of it. I'd run now if I were you.
---> Ha! I scrolled down the page! [[DidntThinkThisThrough Your brilliant plan has failed!]]
---> You fool! [[OffscreenTeleportation You've doomed us all!]]
----> I regret nothing!
---> The joke is on you, as I was not fooled for a moment. [[SpecialEffectsFailure The font in the image doesn't even match the rest of the text in my browser.]]
--> [[ComicallyMissingThePoint Whoever put that picture here has issues.]] [[DidntThinkThisThrough Also, you can just remove the picture.]]
---> [[OffscreenTeleportation Haven't we been over this?]]
--> [[MuggingTheMonster Yummy ]] [[BigEater horsebeef!]]
---> ...You guys are as weird as f*ck.
----> And YOU must be new here.
--> [[WesternAnimation/TheSimpsons Can't sleep, pony will eat me]]. [[MadnessMantra Can't sleep, pony will eat me]]. [[RuleOfThree Can't sleep...]]
---> [[WesternAnimation/MyLittlePonyFriendshipIsMagic Sheesh, you're nearly as big as her. How's she gonna gobble you up?]]
----> Bit by bit, she DID bring a knife.
--> [[TheQuisling I, for one, welcome]] [[WesternAnimation/TheSimpsons our new murderous pony overlord.]]
* Any and every time an editor includes a gag or meme from a show in their entry.
* Averted in the former BigLippedAlligatorMoment Troper Tales article. The fact that the RealLife moments were being posted about meant that they were being mentioned again, thus disqualifying them.
* Troper Tales itself was this back in the day.
[[SelfDemonstratingArticle I am the very model of a modern major general, I've information vegetable, animal and mineral. I know the kings of England and I quote the fights historical from Marathon to Waterloo in order categorical. I'm very well acquainted too with matters mathematical, I understand equations both the simple and quadratical. About binomial theorem, I'm teeming with a lot of news with many cheerful facts about the square of the hypotenuse. I'm very good at integral and differential calculus. I know the scientific names of beings animaculous. In short in matters vegetable, animal and mineral, I am the very model of a modern major general]].