History Main / IknowYouKnowIKnow

* Loosely applies in the Franchise/MarvelCinematicUniverse fic "[[https://archiveofourown.org/works/38976993/ Because I Knew You]]"; when Wanda Maximoff comes to New York to investigate the spell that erased all memory of Peter Parker (''Film/SpiderManNoWayHome''), Peter tentatively recognises her as the Scarlet Witch when she introduces herself as his new neighbour, "Lizzie". However, since Peter believes she wouldn't remember him any more than anyone else, he doesn't bring it up, assuming that she's here on some mission for the Avengers, and Wanda doesn't correct his assumption even though she can read enough of his mind to know that he knows who she is, choosing to just offer him emotional support.

* Played with hilariously by Professor Hilbert in ''Film/StrangerThanFiction'', when Harold mentions his narrator said "Little did he know":

* Music/{{Negativland}}'s ''[[https://www.youtube.com/watch?v=5T_rhzKly8s&list=PLIzlr2RR_imLgKYH88_rcQ6U4G5TpZp-0 Time Zones Exchange Project]]'' has a moment early on where erstwhile [[AlphabetNewsNetwork Universal Media Netweb]] star Dickie Diamond (Richard Lyons) succumbs to his paranoid delusions and goes completely [[https://archive.org/details/ote over the edge]], flying off in the traffic herders' Whirlycopter armed with a Media-Shifter and that vilest of all weapons, a ''script''. He tells UMN producer Omer Edge (Don Joyce) he's discovered Netweb executives' [[UsefulNotes/ConspiracyTheories conspiracy]] to get rid of him: "Don't you think I know that you know, that I know what you and Friday are up to?" [[https://youtu.be/5T_rhzKly8s?t=7m38s Hear it here.]]

* A major plot point of a certain ''LightNovel/SpiceAndWolf'' arc. Holo is a semi-deity, one incredibly adept at quick thinking and long term planning both. Her [[SherlockScan sharp senses]] and silver tongue can turn practically any bargain into an incredible deal. So when Lawrence manages to find himself in a make-or-break financial showdown with Amati, (who is ''also'' an incredible merchant), he almost breaks down trying to out-think their combined plans. [[spoiler:Holo was actually helping him the whole time, he was just so distraught over the matter that he missed the hints she was dropping, and completely misinterpreted the few he caught.]]

** In Chapter 32, [[TheRival Gary]] and [[JerkAss Paul]] have a full battle against each other. Gary, knowing that Paul's Torterra, his strongest Pokémon, can use Stealth Rock, prepares in advance with a couple of Pokémon to prevent him from setting it up. However, Paul anticipated that he'd try this, so he countered by switching Torterra out and send out a different Pokémon to crush Gary's. [[spoiler:While the battle isn't shown in full, it's later revealed that Gary lost, ''[[CurbStompBattle badly.]]'']]

* The Russian word ''vranyo'' is often translated as "lying to make oneself look good" but an alternate definition that's commonly used is "I'm lying, you know I'm lying, I know you know I'm lying, and you know I know you know I'm lying, but we'll both pretend it's the truth".

* ''Machinima/RedVsBlue'' has an example in the final episodes of ''Revelation'': as Washington and co. approach a base known to be inhabited by Tex, he stops the jeep some distance away, pointing out that the open area ahead is the perfect spot for a sniper ambush. Doc asks, since Tex received the same training he did, wouldn't she know he'd know that and plan accordingly? Wash: "You're overthinking it." And then the buried landmines go off.

* This is such a central concept in games of Mafia (i.e. ''TabletopGame/Werewolf1997'') played on ''Website/MafiaScum'' that they refer to is using the abbreviation [[https://wiki.mafiascum.net/index.php?title=WIFOM WIFOM (Wine In Front Of Me)]] in reference to the use of the trope in ''Film/ThePrincessBride''.

* This is such a central concept in games of Mafia (i.e. ''TabletopGame/Werewolf1997'') played on ''Website/MafiaScum'' that they refer to is using the abbreviation [[https://wiki.mafiascum.net/index.php?title=WIFOM WIFOM (Wine In Front Of Me)]] in reference to use of the trope in ''Film/ThePrincessBride''.

** In [[Recap/DoctorWhoS32E8LetsKillHitler "Let's Kill Hitler"]], [[XanatosSpeedChess between the Doctor and River]]. [[spoiler:Though it doesn't matter, because she's already poisoned him.]]

* Most of the point of ''Anime/LegendOfGalacticHeroes'' is like this, with Yang Wenli and Reinhard (and various other pairs) making plans, which may include knowing their opponent's plans (and sometimes involve a plan being an opponent seeing though the plan, with an extra layer of fake planning below it).

* Applying this trope to competitive multiplayer games gives you the {{Metagame}}. Initially, competing players of a particular video game will be playing the game more or less as the developers intended, using mechanics and strategies that the developers themselves had foreseen and anticipated (or observed through pre-release playtesting). Over time, players will discover quirks of the game rules, exploits of the game's engine, or unexpected strategies, any combination of which gives them a competitive advantage - but only so long as these quirks, exploits or strategies are not widely known. Eventually, the existing quirks, exploits or strategies become common knowledge and players come up with countermeasures to overcome them, and in turn must find new exploits or strategies which the other players hadn't anticipated. After enough iterations of this pattern, high-level play between experienced players can look ''completely'' different from ordinary play between novices.

* "Throwing It All Away" by Music/{{Genesis}} starts with the lines:

* Loosely applies in the Franchise/MarvelCinematicUniverse fic "[[https://archiveofourown.org/works/38976993/ Because I Knew You]]"; when Wanda Maximoff comes to New York to investigate the spell that erased all memory of Peter Parker (''Film/SpiderManNoWayHome''), Peter tentatively recognises her as the Scarlet Witch when she introduces herself as his new neighbour, "Lizzie". However, since Peter believes she wouldn't remember him any more than anyone else, he doesn't bring it up, assuming that she's here on some mission for the Avengers, and Wanda doesn't correct his assumption in favour of offering him emotional support.

* Loosely applies in the Franchise/MarvelCinematicUniverse fic "[[https://archiveofourown.org/works/38976993/ Because I Knew You]]"; when Wanda Maximoff comes to New York to investigate the spell that erased all memory of Peter Parker (''Film/SpiderManNoWayHome''), Peter tentatively recognises her as the Scarlet Witch when she introduces herself as his new neighbour, "Lizzie", but since he believes she wouldn't remember him any more than anyone else, he doesn't bring it up and Wanda doesn't correct him.

** Another [=WW2=] example, Operation Bertram. In the desert campaign, the British wanted to launch an attack against the Germans in the North while convincing the Germans they were actually attacking from the South. To this end, the British built a large number of fake tanks (disguising tanks as supply vehicles) while also disguising a lot of supply vehicles as tanks. However, the British knew to make the Germans really believe the British's fake attack from the South was, the British had to be caught making a deception plan that was attempting to hide the real attack that was coming from the South. To this end, the British set up a bunch of fake artillery pieces in the South made sure the fake artillery pieces were fake enough to be noticed as fake by the Germans but not so fake that they were obvious. Before the expected German attack on the fake artillery, the British swapped out the fake artillery pieces with real artillery pieces to drive back the attack. As expected, the Germans attacked the seemingly undefended position, were repulsed by artillery, and thought that the fake artillery pieces were really a cover for the real attack coming from the South, and prepared for a Southern attack. However, the British attacked from the North, which the Germans were unprepared for, winning the following battle as the Germans fell for the British double bluff.

* An episode of ''WesternAnimation/SamuraiJack'' had [[TheProtagonist Jack]] and [[BigBad Aku]] agreeing to a final duel with no swords, minions, or special powers. Naturally, [[ILied Aku cheats]], as Jack knew he would and so prepared for by bringing his sword and hiding it. But Aku knew Jack would know that he cheated, and had a minion find the sword. But Jack knew that Aku knew that Jack knew that Aku would cheat, so he planted a decoy sword. But Aku knew that Jack knew that Aku knew that Jack knew that Aku would cheat, so he had his minions look for more swords. But [[OverlyLongGag Jack knew that Aku knew that Jack knew that Aku knew that Jack knew that Aku would cheat]], so he planted fake swords all over the battlefield and had his real sword [[spoiler:buried underground]].

* ''Series/TheATeam'', "[[Recap/TheATeamS3E12HotStyles Hot Styles]]". When Turian gloats to Face that he's already too late to stop him from stealing the fashion designs, Face reveals that he suspected Rina would be frightened enough to inform on him and hence he didn't replace the film. Turian sent the decoy roll with Murdock's designs to his boss and tossed the real roll into the harbor.

*** How exactly did this guy get into Army Special Forces again?
*** I think they drugged him.

* In ''Film/{{Hero}}'', one version of the duel between Nameless and Sky is a BattleInTheCenterOfTheMind where they each mentally pitch their own set of skills against their opponents', each anticipating the other perfectly.