And would you not feel quite the fool of deception
To find the same face on both sides of the coin?
A character flips a coin to make decisions, letting their fate be decided by chance... except that they've secretly provided a two-headed coin just to ensure that "fate" comes out in their favor.
A two-tailed coin is equally valid, but much less common, for whatever reason. Additionally, if a coin is being judged on the side that lands and not the symbol, a two-headed coin is actually more fair, as the weight of different designs actually biases normal coins.
Often a characteristic quirk, usually for villains, anti heroes, or badasses. May indicate a character is Two-Faced or appear as a #1 Dime. Can invoke Dramatic Irony when the audience knows the coin is rigged, but the other characters don't. When the coin isn't two-headed, it may still always land heads up due to the Random Number God or a character being Born Lucky. Subtrope of Fixing the Game. See also False Roulette for another type of game of chance that isn't actually up to luck and Heads, Tails, Edge for other another coin-flipping trope.
- In Digimon Adventure 02, when Hikari is trapped in Full Metal City and Daisuke and Takeru are preparing to reenter to rescue her, Daisuke (who has a crush on Hikari) attempts to pull this on Takeru to decide who will go. He uses a false American quarter with heads on both sides, declaring that heads means Takeru goes home. Takeru swipes the coin while Daisuke is gloating about his "victory" and calls him on it, noting that such false coins are widely sold at a local store and even admitting to having used one himself on his older brother, which apparently worked for long enough to Takeru to have won several things off on Yamato.
- In Queen's Blade, Risty owns a two headed gold coin that she claims is a good luck charm. She gives it to Leina, saying she'll take it back once Leina gains control over her life and becomes truly strong. At one point, seeing the coin helps Leina snap out of mind control.
- On Yu-Gi-Oh!, Yami Yugi uses one to counter the Paradox Brothers' cheating re which path would lead the gang out of the labyrinth dungeon.
- A subversion is part of Two-Face's signature style in the Batman comics: Harvey Dent uses one of these, but then one side gets scratched up, making it back into a fair coin. Its emotional/symbolic significance to Two-Face makes it a #1 Dime as well. (Originally it was Boss Maroni's "lucky coin", and hence was tied to his origin. In later stories it was the coin his abusive father tossed with the assurance that if it came down tails he wouldn't be beaten. Harvey only learnt it was double-headed shortly before being scarred.)
- Subverted in Iznogoud, where one story mentions all the coins are two-headed. Iznogoud forgets it, ridiculing himself.
- In a Jonah Hex comic, a Frenchman uses a two-headed coin to win a coin toss against Jonah: choosing to stay behind and make the Heroic Sacrifice holding off the Indians while Jonah gets the woman they were escorting to safety.
- One villain in a Lucky Luke album used a two-headed coin.
- In a War Picture Library story, two US sergeants in the Philippines have a long-term rivalry. One always wins a toss with his 'lucky' coin, and when there's a chance for one of them to be evacuated after the Japanese invade, his rival insists on calling heads this time, thinking he'll get some of the other's luck. Sure enough he's evacuated, and it's only afterwards he discovers the other sergeant always used a double-headed coin and so allowed him to win.
- In a Spider-Man story, the super-villain Chance had been hired to steal a liver for a dying criminal that was desperately needed by a dying young boy. After Spider-man catches up with him and explains things, Chance puts it down to a coin toss, infuriating Spider-man. After Chance loses, he notes that Spider-man should have more faith and tosses him the coin so Spider-man could see the coin was a double-headed coin, ensuring Spider-man would win the life-saving organ.
- In Batman Forever Two-Face has his double-headed coin with one side scarred, like usual. It's a Double Subversion, though, as instead of always doing what the coin says, he keeps flipping the coin until he gets the outcome he wants.
- He actually seems to toss it every time he has a clear shot at Bruce, keeping it perfectly in-character for Two-Face.
- Used by Jai in Sholay when he and his brother need to make a difficult decision. Needles to say, he always gets his way.
- The Dark Knight: Harvey Dent uses a two-headed coin for Perp Sweating; he says every time he doesn't get a straight answer, he'll flip the coin. Heads, he asks again. Tails, he shoots him dead. He uses the coin several more times times as well, and when he's asked by Rachel why he'd leave something up to chance, he says he doesn't, and shows her the two-headed coin, revealing "he makes his own luck." Becomes a subversion later in the movie, as the fiery explosion that ruined one side of his face also mars one side of the coin, making it the classic clean/marred Two-Face coin.
- In one of the Doc Savage novels, Monk gets a two-tailed coin to swindle Ham because he habitually calls heads during a coin toss.
- In one Doctor Who New Adventures novel, the Doctor pulls a fifty pence piece out of his pocket and tosses it to make a decision. As he puts it back in his pocket he notices the other side also has a picture of the Queen, only she's grinning.
- In the Redwall book The Long Patrol the Rapscallions are an army/fleet of vermin whose leader, the Firstblade, wields a sword with one wavy and one straight edge. At the beginning of every campaign season, the Firstblade flips the sword in air, and whichever edge comes down first determines how they'll go raiding. Straight edge for marching overland, wavy for taking sail in search of plunder. This trope because the Firstblades also pass down a brass clip that fits to the hilt and crossguard unseen and weighs one end, so the Firstblade always chooses while pretending to leave things to fate.
- Doctor Who:
- In "The Pirate Planet", the Doctor settles an argument with a coin toss, revealing afterward that it's a coin from Aldebaran III, where they have two kings so both sides of the coin are heads.
- In "The Greatest Show in the Galaxy", Captain Cook uses a two-headed coin to win a coin toss against Nord and force the barbarian to enter the ring first. He later reveals that he has two-tailed coin as well, so Nord was screwed no matter what he called.
- Judge Stone used this in the pilot for Night Court to decide the punishments for defendants.
- Appears in one episode of Only Fools and Horses; Grandad gave Del Boy a two-headed coin, which he tries to use to win bets with Boycie. Unfortunately, because he tosses, Boycie gets to call, and keeps calling heads. At the end, after Del's beaten Boycie at poker, he offers Boycie double or nothing on the coin, but because Boycie thinks the law of averages means he's bound to lose this time, Del suggests that instead Rodney could call it, as Del's representative. So he spins the coin ... and Rodney calls tails.
- In Disney's Zorro, Uncle Esteban makes frequent use of a two-headed coin; the locals are gullible enough that he's never caught at it, though Diego recognizes the coin for what it is and realizes Esteban's up to something when he intentionally loses a coin flip to him.
- Invoked in the Hustle episode "The Delivery" when Albert's old friend Yusef, having lost big time to the crew at poker, is offered a 5:1 coin toss to win it back and calls heads. Cut to:
Yusef: For seventy years, I call tails!Ash: So why the change?Yusef: Well, I'm surrounded by con-men, I think maybe one of you has a double-headed coin...Mickey: That is very hurtful.
- In another episode, it is revealed that Ash has a collection of double-tailed coins for precisely this reason.
- In The Adventures of Pete & Pete, it's revealed that Little Pete always kept a two-headed penny on him for good luck. When its luck ran out, he attempted to take it out to a railroad track to flatten and recharge it.
- Gilligan's Island: Gilligan at one points finds himself caught in a Duel to the Death with an island native for a marriage challenge. Skipper tries to win Gilligan the first spear toss with this, but Gilligan is unaware of the ruse and picks the wrong side.
- Used by Dante in Devil May Cry 2. He hints that the quirk may come from his father.
- Dante's coin shows up in his cameo in Shin Megami Tensei III: Nocturne, where knowing of it lets you get him in your party for a mere 1 macca.
- Used by Edgar to determine who would rule Figaro in Final Fantasy VI, not so much because he wanted his late father's throne, but because he secretly knew his free-spirited brother Sabin didn't. It is later reprised when Celes borrows the coin (if Edgar is in the party) for a similar flip against the gambler Setzer ("heads, you take us to the Empire's capital city; tails, I agree to marry you.") Setzer is surprised to discover that he fell for a trick coin... but escorts them to the capital anyways, saying he likes Celes' style.
"How low can you stoop? ...I love it!"
- If the player brings both Edgar and Sabin to the Opera House where the above takes place, Sabin looks at Edgar with a look of purest shock.
- The credits reveal that, though the coin is two-headed, the heads are not the same; one side has Edgar's face, the other has Sabin's.
- One of the books you can discover in World of Warcraft's Mists of Pandaria expansion, "The General and the Grummle" (based on the Real Life tale below), uses this trope. In a situation where soldier morale is low, a general flips a coin: heads, they will win the upcoming battle; tails, they will lose. It lands heads, and they win. A grummle accompanying the general wonders about the wisdom of trusting to luck; the general then reveals that the coin was two-headed. "It is my experience that we make our own luck."
- As per tradition, Two-Face has his scarred coin in the Batman: Arkham Series.
- Homestuck: Terezi has a two-headed TROLL CAEGAR which, like that of Harvey Dent, has a scratch on one side. In a way, this is still played straight, as both she and those she gambles with know that, thanks to her uncanny grasp of psychology (and being blind), it doesn't really matter which side lands up.
- In Freefall, Florence needs help deciding whether to go out on a date or do some minor repair work, so she flips a coin. She notes that if she wanted an even chance, she wouldn't be using one of Sam's coins.
- Similar to the film and comics examples above, in Batman: The Animated Series Harvey Dent uses one of these that gets marked on one side when he becomes Two-Face.
- In the DuckTales (2017) episode, "The Missing Links of Moonshire", Glomgold uses one of these to determine who goes first at golf, but ends up calling tails and has a hissy fit over losing the coin toss. Likely out of pity, Scrooge gives the coin toss win to Glomgold anyway.
- One episode of TaleSpin featured a two-headed coin with a twist: Baloo realizes he's been duped when he notices that not only are both sides of the coin heads, but one of them is making a face at him. Baloo actually didn't have much room to complain, as he himself had used a two-tailed coin earlier in the same episode.
- In an Aesop and Son segment of Rocky and Bullwinkle, the son uses a two-headed nickel to win a wagon-full of toys which is not the moral of "Two Heads Are Better Than One". So Aesop tells him a fable of this moral.
- A two-tailed coin variant is used in the Tiny Toon Adventures episode, "Thirteensomething", when Buster and Babs cannot agree on what to watch on television after school, as Buster would rather watch football, while Babs would rather watch the teen soap opera, Thirteensomething. Plucky helps them settle their dispute with a coin toss, with heads being football, and tails being Thirteensomething. Since the coin is a two-tailed coin, Babs gets to watch Thirteensomething, much to Buster's disdain. Plucky tells Buster his coin was double-sided, but he forgot which side was doubled.
- The Biskit Twins attempt to use a double-headed coin to go first in the debate in the Littlest Pet Shop (2012) episode "Inside Job." Blythe, their opponent, anticipates they'd try this trick and calls heads before the twins can, thus guaranteeing she goes first.
- In The Flintstones, Fred employed one whenever making a coin toss with Barney. When Barney claimed he'd take heads one time, Fred had to stop the coin before the toss was complete.
- The New Scooby Doo Movies episode "Ghastly Ghost Town" had Shaggy flipping a coin to decide whether or not to investigate a deserted saloon—heads they don't go in, tails they do. "The fact that it's a two-headed coin is beside the point!"
- There is an apocryphal story of a general in feudal Japan who wanted to launch an attack on the enemy, but his troops were reluctant to do so as they were outnumbered. The general told them, "I place our success in the hands of the gods! If this coin comes down heads, we shall win, and if it comes down tails, we shall lose!". The coin came up heads, and his army managed to win. Afterwards, his second-in-command asked how he knew the coin was going to come up heads, at which point the general showed him the coin, which had heads on both sides.