In media of all types, but especially comics and cartoons, the "innocent" whistle is a main staple, often played for humor. [[AliceAndBob Alice]], feeling mischievous, decides to, say, throw a snowball at Bob. Bob is knocked off his feet. He pulls himself up and spins around to see no one around in the area but Alice, who puts her hands behind her back and lifts herself up onto her tiptoes and back down several times while whistling. Sometimes Alice would be also be twiddling her thumbs, point her eyes upward/away, putting her hands in her pockets, or a halo would appear above her head -- or any combination thereof. In comics, usually only a single note symbolizing the whistle is written. The NotSoInnocentWhistle can also happen after suppressing a traumatic moment, or any other instance of hiding something.

Common ways the trope is applied:
* The DeadpanSnarker and/or the TheComicallySerious end up CoveredInGunge or otherwise pranked. They prepare their worst DeathGlare for the PluckyComicRelief only to find him/her whistling.
* A character does something bad (accidentally or otherwise) and walk away whistling.

A DeadHorseTrope, given the large number of GenreSavvy characters [[LampshadeHanging who point out]] that whistling for no apparent reason is a surefire method to give yourself away. [[IThoughtItMeant Not to be confused with]] the {{wolf whistle}}. An OhCrapSmile is an alternative in this kind of situation.

A staple subtrope of ActingUnnatural.
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!!Examples:

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[[folder:Advertising]]
* A commercial for a ''Franchise/{{Pokemon}}'' toy showed a kid doing this after using the product (a Pokéball on a string that can snap closed) to snatch a Pokemon mini figurine from a friend.
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[[folder:Anime and Manga]]
* In ''Manga/DragonBall Z'', Ginyu, trapped in a frog's body, tries to steal the Dragon Balls. When Gohan spots him, he leans up and against the ball and whistles, forgetting that it's not something a frog usually does.
* ''LightNovel/HaiyoreNyarkoSan'' gently poked this trope by having Nyarko attempt it without actually knowing how to whistle, which results in Not-So-Innocent ''Blowing Noises'' instead. The gag was repeated a few episodes later by Cuuko.
* Sometimes used by [[OnePiece Luffy]] who has this and a not-so-innocent ''face'' due to his cannot tell a lie nature.
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[[folder:Comic Books]]
* In ''{{Asterix}}'', Obelix once did it to fool a Roman legionary. That guy wasn't fooled, but told Obelix everything he needed to know. Obelix still didn't get it.
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[[folder:Film - Animated ]]
* In ''WesternAnimation/ChickenRun'', the chickens are caught in the middle of planning their escape. After a {{Beat}} or two of silence, every single chicken starts whistling (in ''unison'') and looking innocent, with their hands behind their backs. They get away with it because Mr. Tweedy [[WeirdnessCensor convinces himself that it's all in his head]]--chickens, after all, do not plot.
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[[folder:Film - Live Action ]]
* ''Film/{{Hancock}}'' has a strange example. Ray's wife whistles as she goes to get eggs out of the fridge [[spoiler:that she tossed through her house wall ''along with the titular superhero'']].
* The action film ''Murder At 1600'' tries to play this trope straight, with a disguised Wesley Snipes trying to infiltrate the White House disguised as a janitor. It fails, and he ends up captured.
* Harry and Marv do this in ''Film/HomeAlone'' when Kevin looks back over his shoulder as they tail him in their van.
* One of the earliest examples is in the movie ''{{Film/M}}'', where the child killer whistles the tune "In the Hall of the Mountain King" right before he tracks down one of his victims. He pauses and breaks it up at odd parts in the song, giving a sense of wrongness. This tic ends up being how the other criminals identify him and eventually hunt him down.
* In Steve Oedekerk's short parody film ''Bat Thumb'', the villain No-Face, asked whether anyone ever had the slightest compassion for him, mentions a certain high school sweetheart of his named Vicky Nail, and his plans to get back together with her. Then he vows "...and I will kill any man who has so much as ''looked'' at her with lust in his heart!" In response, Bat Thumb (who has done a good deal more with her than just look, and also heard her say [[ReallyGetsAround she's done plenty more herself]]) quietly whistles to himself from the DeathTrap.
* In ''Film/KillBill'', an absolutely epic example takes place while Elle, infiltrating a hospital in a nurse outfit, goes to administer a lethal injection to the comatose Bride, [[MundaneMadeAwesome whistling awesomely all the while]]. It's one of the most frightening examples of this to date.
* Peter in ''Film/DoubleTrouble'' does this twice: he starts whistling innocently after he and his brother are unable to chase after the bad guy due to him removing the steering wheel from his brother's car (he was handcuffed to it), and does it again later when he throws away a small, seemingly harmless explosive, and it blows up a car.
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[[folder:Literature]]
* In ''[[NurseryCrime The Fourth Bear]]'', Detective Spratt catches [[FunnyAnimal two bears]] in the middle of a [[ICantBelieveItsNotHeroin porridge deal]], and they try to look innocent. The narration notes that if bears could whistle, they would have.
* In one ''Series/DoctorWho'' Literature/EighthDoctorAdventures novel, someone makes an IncrediblyLamePun about Fitz's name, and it's so bad that everyone just looks upward and whistles.
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[[folder:Live Action TV]]
* ''Series/{{Scrubs}}'' - Ted digs up a law requiring separate changing rooms for men and women, which means Kelso loses his new giant office. When Kelso demands to know who's responsible, Ted starts sort of blowing air through his mouth. Kelso asks what he's doing, to which Ted replies [[LampshadeHanging "I'm whistling so you won't think it was me..."]]
* In ''PoliceSquad'', a thug disguises himself as "press" to bring a large number of weapons into a victim's room and kill him. The guard doesn't notice. Whistling "Whistle While You Work" on the way out probably helped.
* Series/{{Supernatural}}- Benny whistles "In the Hall of the Mountain King" when he fights in Purgatory.
* Series/{{Breaking Bad}} - Jesse is distraught over [[spoiler:a TV news broadcast about the disappearance of Drew Sharp, the boy that Todd killed. Walt tells him that he feels guilt about the incident as well, but after the conversation is over, he starts to whistle lightheartedly, implying that he doesn't feel any remorse over the murder.]]
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[[folder:Mythology]]
* OlderThanFeudalism: The [[GreekMythology Greek god]] Hermes is described as doing exactly this in a myth about his birth. Apollo accuses him of stealing his cattle, and the incorrigible little scamp whistles innocently and gets shifty eyed.
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[[folder:Newspaper Comics]]
* In a ''ComicStrip/{{Garfield}}'' comic:
-->'''Jon:''' Garfield, would you happen to know what happened to the lasagna I fixed for dinner?
-->'''Garfield:''' ''(whistles innocently)''
-->'''Jon:''' I didn't know you could whistle.
-->'''Garfield:''' I'd tapdance too if it would change the subject.
* A run of ''ComicStrip/{{Peanuts}}'' comics had Charlie Brown's baseball team actually win a game, only to have the victory taken away due to a gambling scandal (Rerun van Pelt bet a nickel the team would win). The story ended with Charlie Brown saying the only thing he didn't understand was who had bet ''against'' the team, and Snoopy whistling.
* {{Lio}} gave himself away to his dad after [[http://www.gocomics.com/lio/2012/01/22 creating inclement weather to cancel school]].
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[[folder:Video Games]]
* In ''VideoGame/EpicMickey'', Oswald The Lucky Rabbit will shoot faces at Mickey when his back his turned. Turn around to face him again and he'll start whistling innocently.
* Sometimes, the police will appear in ''VideoGame/UrbanChampion'', which causes the fighters to run back to the sides of the stage, thus restarting the fight. Can be helpful if you were about to lose, but annoying if you just needed that one more punch to send that green-haired punk down the drain.
* In ''VideoGame/PennyArcadeAdventures'' episode 2, the party rigs a monorail to crash into [[ItMakesSenseInContext a giant metal orange]] so they can climb it to fight the final boss. Unfortunately, they realize too late that the bus was full of passengers, leading them to walk away whistling.
* In ''VideoGame/JakAndDaxterThePrecursorLegacy'' Jak laughs at Daxter when the Yellow Sage refers to duo as "a boy and his muskrat". He quickly switches to an innocent whistle when Daxter looks up at him in accusation.
* In ''VideoGame/MetalGearSolid4GunsOfThePatriots'', this is how you track members of LaResistance through Prague. It straddles the line between silly and eerie.
* In ''Super StreetFighter IV'', one of [[TragicHero Cody]]'s winning poses has him looking around, the whistling and walking his way out of the scene. [[Funny/StreetFighterIV It's hilarious.]]
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[[folder:Webcomics]]
* In [[http://www.brawlinthefamily.com/?p=274 this strip]] of ''Webcomic/BrawlInTheFamily'', [[{{Kirby}} King Dedede]] throws snowballs at [[{{Metroid}} Samus.]] [[BullyingADragon It ends about as]] [[ViolationOfCommonSense well for him]] [[HarmlessFreezing as you'd expect.]]
* In ''Webcomic/SluggyFreelance'', this is standard [[http://www.sluggy.com/daily.php?date=040201 vampire hunter procedure]] when they accidentally kill a human being.
* Elliot of ''Webcomic/ElGoonishShive'', as he [[http://www.egscomics.com/?date=2010-09-17 overhears a conversation]] about a topic he knows a lot about and yet dare not reveal what he knows for fear of breaking the {{Masquerade}}.
* In ''Webcomic/TheOrderOfTheStick'' Sabine does this [[http://www.giantitp.com/comics/oots0356.html while escorting the captured Pompey while disguised as a policeman]].
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[[folder: Web Original]]
* Wash pulls this in season 10 of {{Red vs Blue}}.
-->'''Donut:''' ...and I got [[spoiler: shot!]]
-->'''Wash:''' (whistles nonchalantly)
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[[folder:Western Animation]]
* The snowball example is from ''WesternAnimation/SpongebobSquarepants'', where Spongebob does this and it actually fools Patrick (though Patrick isn't too bright anyway).
* The traumatic instance: ''WesternAnimation/TheMarvelousMisadventuresOfFlapjack''. "I'm thirty-eight years old!"
* Parodied in ''WesternAnimation/{{Futurama}}'':
-->''*Leela has murdered the Professor*''
-->'''Leela:''' ''(talking to herself)'' OK, just stay calm and try to act nonchalant.
-->''(Leela whistles innocently)''
-->'''Zoidberg:''' Alright, so you're nonchalant. Quit rubbing our noses in it!
** And almost mentioned by name in another episode:
--->'''Bender:''' Oh no. Not the innocent whistling!
* ''WesternAnimation/WordGirl'' uses this once, when Becky's dad attempts to pay the obviously fake "babysitter." He tosses it some money and, when it remains inanimate, looks guilty, puts his hand in his pockets, and walks away whistling.
* Used in the ''WesternAnimation/DannyPhantom'' episode "Girls' Night Out." A ghost attacks Danny and his sleeping father while they are on a boat. Danny beats the ghost but, in the process, gets water everywhere. His father wakes up soaking wet to discover Danny whistling innocently.
* Used in the story "It's a Bird, It's a Plane... It's an Elephant?" on ''PBandJOtter''. When Flick is making fun of the others for believing in dragons and flying elephants, Scootch imitates him and then Flick gives him a dirty look once he realizes what he's doing. Scootch then gives a not so innocent whistle.
* In the ''WesternAnimation/SouthPark'' episode "Red-Hot Catholic Love", the parents of South Park talk about the recent trend of priests molesting young boys. When Priest Maxi walks by, ''all of them'' whistle innocently, much to his confusion.
* In an episode of ''{{Jimmy Two-Shoes}}'', the ''entire town'' does this after Lucius demands to know who let Beezy borrow their cell phones.
* In a ''WesternAnimation/FairlyOddParents'' episode, Mama Cosma manipulates a game show that will decide whether or not Cosmo will get to stay home with Timmy or not. Ultimately, only one person votes for Cosmo to "go home with his mama":
--> '''Timmy:''' I can't believe after all those tear-jerking heart-wrenching moments you still voted to take Cosmo away!
--> '''Mama Cosma:''' Actually, after seeing how Cosmo tortured Wanda I actually voted to let him stay with you.
--> '''Timmy:''' Then who was the person who voted Cosmo home?
--> '''Wanda:''' ''(whistling)'' ...What? I didn't do it! I'm just practicing my whistling!
** [[spoiler:She didn't. It was Cosmo; he thought the button to vote him home would ''send'' him home to Earth.]]
* In ''WesternAnimation/CloneHigh'', Gandhi, as he leaves the scene from having released the savage genetically engineered monster Geshy into the wild, upon seeing the destruction it causes.
* [[WesternAnimation/TheSimpsons Homer]] also does in the episode "Summer of 4 ft. 2," when he, in an attempt to light a certain illegal firecracker with the stove, accidentally burned off a significant amount of the fuse, before shoving it in the sink (He was going to shove it in the refrigerator, but he stopped when he realized the beer was also in there). As a result of the obvious damage from the explosion, sewage was also coming up and overflowing the sink and onto the floor, to which Homer then walked away from the sewage with his hands behind his back, whistling. Marge is then seen cleaning up the mess in the background while Bart is complaining about Lisa's popularity.
* In the ''WesternAnimation/GoofTroop'' episode "Cabana Fever", PJ does this when Peg sees that he accidentally put Pistol in the trunk with all the luggage. The whistling really neither helps nor hurts his case, since he does it after Pistol tells on him, or rather, "[[ShapedLikeItself someone whose initials are P.J.]]"
* In the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode "Apple Family Reunion", Big Mac steals an apple fritter when thinks no one is looking. When Applejack find out, he whistles nonchalantly, though Applejack obviously knows he did it.
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