->''"But suppose you throw a coin enough times...suppose one day, it lands on its edge."''
-->-- ''LegacyOfKain''

Put simply, a character [[HeadsOrTails flips a coin]], which lands on its edge. This generally happens for one of two reasons:

# The character is using the coin flip to make a decision. When the coin lands on edge, they take it as a signal either to be indecisive or to TakeAThirdOption. This frequently results in the best of both options being employed. HilarityEnsues in a comedy series. ScrewDestiny follows if the character was facing a SadisticChoice. GambitPileup occurs if the other side of the conflict had a XanatosGambit in play to account for both possibilities but not this one. And if the coin was a metafictional SchrodingersGun, the entire plot goes OffTheRails.
# Something is messing with the laws of probability. Weighted coins, supernatural causes, NegativeSpaceWedgie...
----
!!Examples:

[[foldercontrol]]

[[folder:Anime]]
* Done with an omikuji (fortune) to settle a bet in ''TenjhoTenge'' between Maya and [[spoiler:Mitsuomi]]. The call was "above average luck", he won; "below average luck", Maya won. They never agreed what would happen if they drew "average luck". [[spoiler:[[AvertedTrope Also, Maya sniped the fortune before Mitsuomi could open it, so they never settled the bet anyway.]]]]
[[/folder]]

[[folder:Board Games]]
* In the game ''BetrayalAtHouseOnTheHill'', there is an item called the Mystic Coin which, when flipped, has a one-third chance of landing on its edge, causing your character to take physical and mental damage.
[[/folder]]

[[folder:Comic Books]]
* ''ComicBook/{{Asterix}}'' once had a con-man visit the village pretending to be an oracle that predicts the future. When captured and tested by Romans, they did the simple coin-flip test and the oracle declared that it will be neither heads nor tails. The cartoon additionally showed the coin bouncing all over the place to finally land on edge.
* In one of the early ComicBook/TwoFace stories in the ''Franchise/{{Batman}}'' comics, Two-Face tosses his coin to decide whether to reform or not. It lands on its edge, caught in the gap in the floor boards. He declares it's now up to fate to decide and puts the coin away in his vest pocket. He is later saved when a policeman tries to shoot him and the bullet [[PocketProtector deflects off the coin]]. As the bullet struck the scarred side, Two-Face decides this means he was meant to be a criminal. Talk about [[NiceJobBreakingItHero nice job breaking it officer]].
** In the very first Two-Face story, after Two-Face captured Batman and Robin and released them unharmed because the coin said so, he captured Batman again. Two-Face said that heads he would free Batman, tails he would kill, and Batman asked about the edge, and said he should agree to turn himself in and co-operate with all plastic surgery and psychotherapy needed to become normal. Two-Face agrees, and the coin does land on its edge. Afterward, Batman revealed to Robin that he had switched Two-Face's coin for one Batman had built and loaded himself. (Unfortunately, [[JokerImmunity Two-Face was too interesting a villain to have only one story]].)
* In one ''ComicBook/SpirouAndFantasio'' story, mobsters kidnap the eponymous duo to aide in their fight against TheTriad (because they are BornLucky while the gang is cursed with bad luck), and before the boss goes to talk with them, he asks his [[TheDragon right hand man]] to flip his lucky coin, heads for them agreeing to help, tails for agreeing gladly. It lands in a roof gutter.
* In a ''ComicBook/RichieRich'' single-page story, Reggie Van Dough was about to flip his double-headed coin to determine who would pay for a meal he and Richie shared: (paraphrasing) "If the coin lands on edge, I'll pay for both of our meals!" The coin did indeed land on edge. It turned out that Richie put glue all around the coin's edge.
* In one of many attempts to choose between BettyAndVeronica, [[ArchieComics Archie Andrews]] flipped a coin. [[StatusQuoIsGod Naturally]], it landed on its edge.
[[/folder]]

[[folder:Fan Works]]
* [[http://www.annkniggendorf.de/gr/fanfic/whatsthecase.html "What's the Case"]] by Ann-Kathrin Kniggendorf, written for ''[[WesternAnimation/AdventuresOfTheGalaxyRangers Galaxy Rangers]]''. A suspect decides to try an rob a store [[CowboyCop Gooseman]] and several other ''armed'' customer are shopping in. Goose bums a quarter to try and decide how to find the case. "Heads: it's a robbery, tails: a suicide." The coin lodges in the floor.
[[/folder]]

[[folder:Film -- Live Action]]
* The governor in ''MrSmithGoesToWashington'' needs to appoint a senator; he's trying to decide whether to pick the guy the political boss likes or the popular favorite. When the coin lands on edge, he picks the guy his kids like -- who also happens to be the subject of the story that the coin landed on.
* Occurs in ''Film/MouseHunt''. The two brothers flip a coin to decide who gets the bed in the house they inherited. The coin rolls across the floor to a still vertical stop. They slowly turn to look at each other, amazed... cut to them both in bed together.
* In ''ShaolinSoccer'', one of the ex monks states that their chances of winning the soccer tournament are [[MillionToOneChance the same as the coin landing on its side]]. A little later he drops it. Guess where it lands.
** To be fair, it rolled into a crack in the pavement.
* Happens in ''Sholay''.
* In ''Truth Or Consequences, N.M.'', the PsychoForHire played by Kiefer Sutherland, obsessed with the [[Series/TheTwilightZone Twilight Zone]] episode mentioned below, keeps flipping a coin to try to get it to land on its side. During the climax, it finally does[[spoiler: right before he's killed]].
* In surreal French-Spanish comedy ''Charlots Go to Spain'' (AKA ''Crazy Boys in Spain'', AKA ''Les Charlots font l'Espagne'') TheCharlots disagree reading the map and can't figure their yacht's position relative to the minefield. They toss a coin to decide where to turn. In spite of the violently jerking ship the coin firmly stands on edge and they decide to drive the yacht strait into the visible mine.
[[/folder]]

[[folder:Jokes]]
* WorldWarTwo. It has become obvious that NaziGermany is losing. Then Hitler hears a rumor that there is a rabbi who can predict the future. He orders the rabbi get brought to him. Then, this dialogue ensues:
--> Rabbi: You throw a coin. Heads means: The British Empire will win the war. Tails: The Soviet Union will win.
--> Hitler: And what if the coin lands on its edge?
--> Rabbi: Oh, then France will win.
--> Hitler (throwing a fit): That's all that can happen?!?
--> Rabbi: Of course not. It could happen that G-D does a miracle and makes the coin stay in the air. - Then, Czechoslovakia will win.
[[/folder]]

[[folder:Literature]]
* In ''Literature/TheWheelOfTime'', this happens around Rand all the time, because he's ''ta'veren''. At one point, Mat flips a coin to try to decide if he should follow Rand or not; the coin lands on edge, but then after a minute falls down on the side that says he shouldn't. It's implied that Rand tips it over by [[FunctionalMagic channelling]]. Later on, Mat's luck powers can make ''dice'' balance on edge. Which is how he manages to roll two dice and get a sum of one.
* Happens in ''Discworld/TheColourOfMagic'', when Rincewind is demonstrating that there is a high [[BackgroundMagicField magical field]] in the area--flipped coins all land on their edge, aside from a few that turn into other things, and one that falls upwards.
** In a variant, trolls (who aren't too bright, at least at room temperatures) have a gambling game where they bet on whether or not a coin will come down ''at all''. Although given how strong trolls are, this may not be as certain as it sounds.
** Then there's Cohen the Barbarian who did a variant of this when told by the gods to roll a seven on a six sided die. [[spoiler: He throws it up in the air, cuts it in half, and has the six and one land facing up on the table.]]
* Subverted in the Battletech novel ''Grave Covenant'': A battle for possession of a planet is called by a coin toss (long backstory). The defending commander (who is supposed to throw the "battle") calls "Edge" during the toss. It doesn't come up edge, but the defending commander says something along the lines of "can you imagine the glory of my victory if it did?"
* In the ''Literature/CallahansCrosstimeSaloon'' series by Spider Robinson, the character of the Lucky Duck bends the laws of probability around him. However, it's done in such a reliable way that when he tosses a coin and asks narrator Jake Stonebender to call it in the air, Jake knows the correct answer is "On its edge."
** [[spoiler:In that particular incident, the coin stuck in a crack in the rafters. Quoth Jake: "I'm still right." (or ''something'' to that effect).]]
** And who can forget the tower of five coins...each balanced on its edge...on top of each other.
* In the ''ForgottenRealms'' universe, a folk story holds that the goddess of bad luck calls a coin toss by the goddess of good luck to decide the fortune of each newborn, and when the coin lands on its edge the "luckless" child makes their own fate. In another version given in the novel ''Prince of Lies'', Cyric claims that when his turn came up he ''made the coin disappear'' before they could see the results (though this is [[ExactlyWhatItSaysOnTheTin unlikely to have been the case]]).
* Case 1 and 2 are combined in ''The Way of Shadows'' by Brent Weeks. Durzo is being blackmailed into a SadisticChoice, and is flipping a coin about it: Head he wins, tails I lose. Durzo's friend Kylar wants to cheer him up, and uses some magic to make the coin land on edge. Kylar tells Durzo that [[TakeAThirdOption there is always a third option]], but Durzo is not convinced.
[[/folder]]

[[folder:Live Action TV]]
* In an episode of ''Series/MalcolmInTheMiddle'', Malcolm is driving himself nuts trying to decide whether to get rid of a store display that his mother considers racist but the store owner does not, so he tries to be impartial and dispassionate about it by flipping a coin. Sure enough, the coin lands on edge. He then turns to camera looking panicked, but the scene ends before we can see his head exploding.
* ''Series/{{Scrubs}}'': JD and Kim flip a coin to decide on keeping their baby. It lands on its side so it remains undecided for the time being.
* The ''[[Series/TheTwilightZone Twilight Zone]]'' episode "A Penny For Your Thoughts" (starring [[TheOtherDarrin The (Original) Darrin]] Dick York) uses this: a man flips a coin, it lands on edge, and he discovers that he's mysteriously become telepathic. At the end of the episode, he knocks the coin over and the telepathy goes away.
* Jimmy James of ''Series/NewsRadio'' once tried to pick the new news director this way, between Dave and Lisa. The first time, it landed on its edge. The second time, he flips it into the air...and just stares straight up into the air saying "now that's something spooky"
* A variant occurs in ''Series/{{Friends}}'' when Chandler, while Monica is on a lucky streak in a game of craps, declares that if his next dice toss is another hard 8 (two fours) again, he and Monica will get married today in Las Vegas. He throws the dice... and one of them rolls off the table. He finds it wedged between a table leg and a wall, balanced on one corner with two of its faces facing partly up: one of which is the second 4 that they need. Monica tells Chandler that he can decide for himself the result of the dice, and Chandler says that it's a 4.
* In the ''Series/{{Charmed}}'' episode "From Fear to Eternity", Phoebe flips a coin to decide if she should cover for her boss's affair. The coin lands on its edge and Phoebe remarks, "Oh, that helped a lot".
* An episode of ''Series/HannahMontana'' where Miley is trying to decide which friend she sides with over a stupid argument. She then {{lampshade|Hanging}}s this by saying "Oh come on!"
* This result came up in ''Series/ThePeterSerafinowiczShow's'' ''WhoWantsToBeAMillionaire'' knockoff "Heads Or Tails".
* In the "Blitzgiving" episode of ''Series/HowIMetYourMother'', Barney inherits the "Blitz" curse which makes awesome things happen just as he's not there to see it. He leaves the room, and the original Blitz flips a coin and it lands on its edge. It falls over just as Barney comes back.
* In the ''Series/{{Community}}'' season 4 finale, a dice tossed lands in a crack on a table on its edge, opening a portal from the darkest timeline.
[[/folder]]

[[folder:Newspaper Comics]]
* ComicStrip/{{Dilbert}} once tried to debunk Ratbert's claim of psychic powers with [[http://dilbert.com/strips/comic/1998-01-13/ 100 coin flips]].
-->"Call it."\\
"Edge."\\
"...That is just a coincidence."\\
"I call edge for the next 99 too."
** He then called "inexplicable hovering followed by hen noises".
--->'''Dilbert:''' "[[ArbitrarySkepticism THAT IS LUCK]]. LUCK LUCK LUCK LUCK LUCK LUCK LUCK!"
* This happened in the February 12, 1990 ''ComicStrip/{{Garfield}}'' strip.
-->"Heads I stay in bed, Tails, I watch TV."
-->[Coin lands on edge]
-->[Cut to Garfield lying in bed... holding the TV above him]
[[/folder]]

[[folder:Video Games]]
* The coin landing on its edge is a recurring metaphor for fate in the ''VideoGame/LegacyOfKain'' series; it represents Kain's SadisticChoice in the first game to kill himself and thus doom the vampires to extinction, or watch the Pillars of Nosgoth that govern the land's health lower the world into decay as they're unable to be restored while he lives. Given that [[spoiler:the SealedEvilInACan the Pillars are keeping trapped will be released if either the vampires die out or the Pillars are corrupted]], Kain aptly states "either way, the game is rigged". The "edge" is [[spoiler:the hope that Raziel will realize he has free will and use it to break the {{Stable Time Loop}}s of the series and throw the timeline into chaos, and hopefully when the dust settles the two of them will be able to TakeAThirdOption and find a way to get the good bits of both choices. And by the end of the series, they ([[LeftHanging apparently]]) succeed]].
* [[PlayerCharacter CHARNAME]] from ''VideoGame/BaldursGate'' is described as a coin on the edge by a seer.
* In ''VideoGame/PokerNight2'', robot character Claptrap occasionally flips a virtual coin to decide what to do. "YAUGH! How does a virtual coin land on its side?!"
[[/folder]]

[[folder:Web Comics]]
* ''Webcomic/{{Freefall}}'', comic [[http://freefall.purrsia.com/ff1900/fc01803.htm 1803]], has a peculiar variant. Florence flips a coin to decide whether to help [[LovableRogue Sam]] or the police officer who's chasing him. Sam steals the coin before it lands, so she decides to help neither.
[[/folder]]

[[folder:Web Original]]
* In [[http://www.youtube.com/watch?v=r-GFKMJwMtc Let's Play Furious Mario - Episode 1]] by LetsPlay/ProtonJon, he decided to choose which path he would take by flipping a game cartridge. It landed on its corner.
* Something similar happened to LetsPlay/{{Chuggaaconroy}} in [[http://www.youtube.com/watch?v=8Cy3fsWchos this]] episode of ''Pikmin 2'', when deciding which dungeon to enter.
* Explicitly said never to happen to an Wiki/SCPFoundation artifact, [[http://www.scp-wiki.net/scp-1289 SCP-1289.]]
* Wiki/{{Uncyclopedia}} has a [[http://uncyclopedia.wikia.com/wiki/Template:Coin template]] that simulates a coin flip. Digging into [[http://uncyclopedia.wikia.com/index.php?title=Template:Coin&action=edit the code]] reveals a 1/2019 chance of landing on "edge", along with a chance of getting "down the drain".
[[/folder]]

[[folder:Western Animation]]
* One episode of ''WesternAnimation/BatmanTheAnimatedSeries'' has Batman switch Two-Face's coin with one that always lands on edge. The main result is not so much an inability to make a decision as the fact that the coin rolls away, and he [[FreakOut freaks right the hell out]] and has to chase after it.
* In an adaptation of ''WesternAnimation/{{Asterix}} and the Big Fight'' and ''Asterix and the Soothsayer'', said soothsayer is attempting to prove to a centurion that he really isn't a soothsayer. When pressed to guess the result of a coin toss, he panics and says he bets on "neither". Guess what happens?
* ''WesternAnimation/TheSimpsons'': A creepy school inspector (and [[Literature/NoCountryForOldMen Anton Chigurh]] expy) asks Homer to call a coin.
-->'''Inspector:''' Call it - [[BeamMeUpScotty friend-o.]]
-->'''Homer:''' Heads! I mean tails! I mean, on its side! ''(the coin lands on its side)''
-->'''Inspector:''' Well done. [[MundaneMadeAwesome Now, let me validate your parking.]] ''(dramatically punches a ticket, with the same sound as the cattle-gun)''
* Happens in the first episode of WesternAnimation/{{Gawayn}}; the coin gets stuck in a gap in a bridge after being flipped.
[[/folder]]

[[folder:Real Life]]
* Birthday card: "Heads, you get gifts; Tails, you get money." (Inside) "That darn thing landed on its edge."
* Hey, man. It happens. According to [[http://adsabs.harvard.edu/abs/1993PhRvE..48.2547M this article]], it happens about 1 in every 6000 nickel tosses. It works better with nickels than quarters; nickels have a flat edge, while most other coins have rounded and ridged edges. They're also thicker than the other coins.
* The 1987 League Cup semi-final, held over two legs, led to a tie between Arsenal and Tottenham Hotspur. The rules of the competition at the time required a replay, with a coin toss to decide the venue. The coin was tossed up into the air...and wedged itself, edge first, into the White Hart lane mud. (The coin was re-flipped; Spurs won the toss, Arsenal the replay.)
* There is an anecdote that John von Neumann and some of the boys at RAND needed to set up a three way coin flip, when one of them produced a small, specially milled cylinder shaped so that it was equally probable for the 'coin' to come up heads, tails, or edge. Von Neumann studied the cylinder for a few seconds and announced its proportions.
** The same principle is used to make a [[http://www.google.com/patents/about?id=UA8UAAAAEBAJ&dq=6926275 five-sided die]] -- a triangular prism shaped to have a 2/5 chance of landing on one of its two triangular "heads or tails" faces and a 3/5 chance of landing on one of its three rectangular "edge" faces, giving each a 1/5 chance.
** Both are just geeks showing off, however. It's much easier to use a standard 6-sided die and mark it (or agree before hand how to treat it) 1-3 twice, or a 10-sided die and mark it (or just treat it) as 1-5 twice.
** You can use a six-sided die for 1-5, using the rule "reroll if six"
[[/folder]]
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