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10[[quoteright:279:[[Magazine/{{Mad}} https://static.tvtropes.org/pmwiki/pub/images/heliumspeech.png]]]]
11[[caption-width-right:283:[[InstantSoprano You could do worse.]]]]
12%%
13->''"A mouse in the wainscotting! Well squeaked, mouse!"''
14-->-- '''The Doctor''', ''Series/DoctorWho'', "[[Recap/DoctorWhoS14E5TheRobotsOfDeath The Robots of Death]]"
15
16Because helium is lighter than air, when you inhale it and try to talk, the sound waves travel faster through the lower-density gas, resulting in reedy, [[WesternAnimation/DaffyDuck duck-like]] voices that can be used to great comic effect. This can be tried in real life, although it should be noted that helium displaces oxygen in your lungs, so breathing it too long can be harmful.
17
18Gasses that are heavier than air, such as sulfur hexafluoride and xenon, have the opposite effect, resulting in a temporarily evil- or gruff-sounding voice, but this rarely appears in fiction probably because the gas is less widely known. They're also a lot more dangerous; for obvious reasons, it's easier for a heavier-than-air gas to build up in your lungs than a lighter-than-air gas. Unless you're standing on your head.
19
20Because it is easy, plausible in many settings, and can be very funny, helium voice often shows up in fiction.
21
22It should be noted that contrary to popular belief, helium actually changes the ''timbre'' (as in the quality) of one's voice, not the pitch. Regardless, those who favor the easy and cheap way of getting things done or just didn't do the research still go for artificially pitch-shifting the characters' voice in spite of this tidbit.
23
24InstantSoprano is a more-painful way to induce higher-than-normal vocal pitches in fiction. Often a deliberate invocation of VoiceChangeSurprise.
25
26----
27!!Examples:
28
29[[foldercontrol]]
30
31!!! Instances when helium is actually involved
32
33[[folder:Advertising]]
34* Used in a State Farm ad in which a helium truck is involved in an accident. Two grown men have fun saying "fender bender" in [[Film/TheWizardOfOz munchkin]] voices.
35* A 2003 ad for Toys R Us has Geoffrey the Giraffe making an announcement from a hot-air balloon, and he gets this because his head is too close to the helium.
36* [[https://www.youtube.com/watch?v=0Qh8vuXsk5c Used in this his Twix commercial.]]
37* In Fed Ex's Super Bowl XXXIV ad, [[Film/TheWizardOfOz The Lollypop Guild's]] voices suddenly drop during their song. A Fed Ex truck then lands, with the person inside delivering them balloons, which they huff the helium from and resume their song as normal. [[https://www.youtube.com/watch?v=B1et5TV90UE&t=516s This ad actually became controversial because the National Inhilation Prevention Council thought that it was promoting drugs, despite FedEx getting the thumbs up from the Food and Drug Administration. Still, the ad was pulled.]]
38[[/folder]]
39
40[[folder:Anime & Manga]]
41* The ''Anime/CowboyBebop'' episode "[[Recap/CowboyBebopSession8WaltzForVenus Waltz for Venus]]" features an expedition to the titular planet, whose atmosphere consists largely of helium when the series takes place. Naturally, it has the expected effect on the characters' voices.
42* Fat Buu talks like this in the English dub of ''Anime/DragonBallZ'', when in the Japanese he sounds more like a jovial old man.
43* In one episode of ''Anime/{{Grenadier}}'', Rushuna has to fight underwater, and nearly drowns until Mikan throws her a compressed air canister. After the fight is over and she surfaces, Rushuna has a very squeaky voice - the canister was full of helium that Mikan used with her balloons.
44* The ''Anime/PokemonTheOriginalSeries'' episode "[[Recap/PokemonS1E54TheCaseOfTheK9Caper The Case of the K-9 Caper!]]" involves Team Rocket using the rather smart plan to disrupt the voices of an Officer Jenny and the other Trainers using helium so that their Pokémon wouldn't recognize their commands. Then they use voice changers to imitate the Trainers' usual voices. It fails because Pikachu immediately recognizes his true trainer, Ash, regardless of his voice. Officer Jenny's Growlithe are fooled for a while, but eventually catch on.
45* In episode three of ''Anime/WandabaStyle'', TheProfessor's latest experiment involves [[GirlGroup the girls of MixJuice]] and [[RobotGirl Satellite Girl]] Kiku#8 taking a blimp filled with experimental helium into the stratosphere. On the way up, they end up losing most of their air supply, and Kiku replaces it with "extra" air. Unbeknownst to any of them, the air was actually some of the helium, which they find out when [[ItMakesSenseInContext they're giving a concert]].
46[[/folder]]
47
48[[folder:Comedy]]
49* An old short bit on ''The Dr. Demento Show'' ran like this:
50-->'''Man:''' Well, first it was, y'know, just a social thing....\
51'''Interviewer:''' Right, mmm-hmm....\
52'''Man:''' ... then I found myself hangin' around supermarket openings, and kids' birthday parties, y'know, anywhere there was balloons.\
53'''Announcer:''' This man has a problem.\
54'''Man:''' And now it's every couple of hours. ''[sound of balloon deflating, breathing in; in helium voice]'' Here, y'wanna hit?\
55'''Announcer:''' This man is hooked on helium. Today, one in every two hundred million Americans is a habitual helium head. It may begin with a single heart-shaped balloon, but just a few birthday parties later -- this could be you:\
56'''Man:''' I think, uh, I realized I was in trouble on Thanksgiving Day.\
57'''Interviewer:''' What happened then?\
58'''Man:''' I was at the Macy's Day Parade, and, uh, I must've blacked out or something, I don't know... next thing I know, I was a hundred feet in the air, and.... ''[sound of balloon deflating, breathing in; in helium voice]'' ...I was sucking Snoopy's tail.\
59'''Announcer:''' Helium. Please... just say, [[{{Pun}} "No, tanks."]] ''[sound of balloon deflating, breathing in; in helium voice]'' A message from the National Helium Foundation.
60* In the Creator/RobinWilliams stand-up routine ''Weapons of Self Destruction'', he states that this is the reason why we need to invent cars that run on helium. Because there would be nothing funnier than two angry guys getting out of the car after a wreck and having them going "I'm gonna kick your ass... Crap, I think one of us has a gas leak."
61[[/folder]]
62
63[[folder:Comic Books]]
64* During Mark Waid's ''ComicBook/FantasticFour'' run, a shrink-rayed Ben is combing the Baxter Building's air ducts for an alien bug. Reed, talking to him via intercom, keeps cracking up over his "little helium voice" and asks him to say "It's clobberin' time."
65* In ''ComicBook/SpiderBoy'', supervillain Professor Emilio Helio has to breathe helium, which gives him a high-pitched and squeaky voice. He reacts [[BerserkButton violently when people find it funny.]]
66[[/folder]]
67
68[[folder:Comic Strips]]
69* On ''ComicStrip/TheFarSide'', some big dogs take turns inhaling helium balloons and barking like small dogs.
70* In one ''ComicStrip/FoxTrot'' strip, Jason imagines himself floating to the ceiling after inhaling helium, only to express his disappointment (in [[PaintingTheMedium curly letters]]) that it only makes his voice funny.
71* There's a ''Magazine/{{MAD}}'' gag where two men come across a vending machine labeled "A hit of helium - $1.00." The first man takes a hit and then speaks in a squeaky voice (represented by a lot of whitespace in his speech balloon). The second man, having only a quarter, puts his money in a machine labeled "Helium substitute," and a boot comes out to [[GroinAttack kick him in the 'nads]], having [[InstantSoprano a similar effect on his voice]].
72[[/folder]]
73
74[[folder:Fan Works]]
75* [[http://mrmenoc.wikia.com/wiki/Little_Miss_Light_(MrMenCentral) Little Miss Light]], a ''Literature/MrMen'' fan character. Bonus points for her being shaped like a balloon.
76* ''Fanfic/RocketshipVoyager''. An oxygen-helium atmosphere is used on board ''Voyager'' to reduce the risk of fire. When Tom Paris boards a space station using an oxygen-nitrogen atmosphere, he thinks it should make chatting up dames easier since he won't sound like [[WesternAnimation/DaffyDuck Daffy Duck]].
77[[/folder]]
78
79[[folder:Films — Animation]]
80* During the party in ''WesternAnimation/TheAngryBirdsMovie'', Judge Peckinpah inhaled helium from a balloon (while [[InflatingBodyGag floating]]) and says a funny joke.
81* In ''WesternAnimation/IceAgeDawnOfTheDinosaurs'', "deadly gas" turns out to be helium which, as mentioned before, can become deadly after extended periods. The characters' discovery leads to an Franchise/AlvinAndTheChipmunks impersonation and HilarityEnsues. Until Buck points out the dinosaur skeletons that died laughing.
82* ''WesternAnimation/{{Migration}}'': Mack after accidentally breathing in the helium inside a balloon.
83* ''WesternAnimation/MuneGuardianOfTheMoon'': When the protagonists are about to dive in the waters of the Big Blue Hole, Mune picks up some glowing fungus that he describes as rich in oxygen, and that will allow them to breathe underwater. However, as a prank the first batch he shows to Sohone are actually rich in helium, and when the big guy promptly eats one, his voice gets all squeaky.
84* In ''WesternAnimation/PussInBoots2011'', when Puss, Kitty Softpaws, and Humpty Dumpty make it to the clouds after riding the beanstalk, they talk in high-pitched voices because of the thin air.
85* This was used to get the voices of the ''Franchise/ToyStory'' little green aliens, rather than artificially speeding up the voices.
86[[/folder]]
87
88[[folder:Films — Live-Action]]
89* [[InvertedTrope Turned on its head]] in the first ''Film/AlvinAndTheChipmunks'' movie: there's a scene where Alvin inhales helium, but since his voice is already high-pitched, it becomes low-pitched instead. A definitive ArtisticLicenseChemistry moment, even if it ''is'' funny.
90* ''Film/BroadwayDannyRose'': Creator/WoodyAllen with a helium voice. Heh heh.
91* Robin Williams has this in ''Film/ClubParadise'' when he went diving and found out that he bought helium tanks instead of oxygen.
92* In ''Film/{{Flubber}}'', Philip Brainard's flubber experiment causes a helium gas tank to leak open and you know what happens after that.
93* In ''Film/HotShotsPartDeux'', the President of the United States, played by Lloyd Bridges, questions while diving why he brought helium instead of air -- with the voice shift at an appropriate point of the InnerMonologue.
94* The Martians in ''Film/MarsAttacks'' get the same effect from huffing a nuclear explosion. It even makes sense if it was a fusion bomb, since they work by fusing hydrogen to, well, helium.
95* ''Film/MaxKeeblesBigMove'' had Robe trying to pass the time waiting for Max to arrive for his going away party by blowing up balloons to get the desired effect. As soon as he does get it, he shouts "Yee-haw!" in a very high-pitched voice, and sounds this way for the remainder of the scene.
96* ''Film/MyBestFriendsWedding'' has a romantic scene that's [[UnrequitedLove not really so romantic]], and in the background a romantic song that's itself not really so romantic either, since it's being sung by a bunch of teenagers offscreen who just inhaled helium.
97* ''Film/PoliceAcademy4CitizensOnPatrol'' has characters switching helium and oxygen bottles to play a trick on Captain Harris.
98* ''Film/{{Sneakers}}'': Carl does this during a party at the team's HQ, much to the amusement of the other hackers.
99* One of the (''very'') few moments in ''Film/ASerbianFilm'' which contains comedy rather than rape or gore; a home video depicting Petar's sixth birthday, with his father Milos and mother Marija celebrating, and at one point Milos blows into a balloon when Marija squeezes it, the reverse rush of air somehow making Milos' voice sound high-pitched.
100* ''Film/WhoFramedRogerRabbit'': The villain does this at the end to unnerve Eddie.
101--->'''Judge Doom:''' Rememeber me, Eddie?! When I killed your brother, I talked... ''[[PunctuatedForEmphasis JUST...]] [[ExaggeratedTrope LIKE... THIIIIIIIS]]''
102* ''Film/WorldWithoutSun'': The special air mix that the two guys in the underwater "deep cabin" breathe at 30 meters deep includes helium. So they get the high-pitched voice, as one researcher humorously demonstrates.
103[[/folder]]
104
105[[folder:Literature]]
106* ''Literature/TheEyeOfArgon'' is often read aloud this way.
107* In Creator/JamesPBlaylock's ''Homunculus'', the oxygenator device spews out blasts of helium and chlorophyll whenever it's activated. Willis Pule mistakes it for another MacGuffin and steals it, only to be hit in the face by one of these blasts when he tries to open it, freaking out when he hears his own altered voice.
108* In ''Judgement at Proteus'', the fifth ''Literature/QuadrailSeries'' book, Frank Compton uses this to [[spoiler:disrupt the Shonkla-raa's ability to control the Modhri through a special hummed tone]]. This may have been inspired by the ''Series/DoctorWho'' example below.
109* In one ''Literature/{{Remnants}}'' book, the cast finds themselves inside the body of a colossal LivingGasbag. The gases the creature runs off turn out to be helium and nitrous oxide, meaning that they not only develop helium voices but also think it's hysterically funny. They have to get out of the creature before they suffocate, but only the most humorless among them are able to take it seriously.
110* ''Franchise/StarWarsLegends'': In ''Literature/FateOfTheJedi: Outcast'', Luke Skywalker's teenage son Ben removes his oxygen mask on a planet with a lot of helium in the atmosphere (Plo Koon's homeworld in fact). He then goes on to sing a song to the annoyance of his father. A very sad song. [[SoundtrackDissonance Until you imagine it in a helium voice.]]
111-->''Where fields once grew, a road runs through, and buildings hide the sun,\
112Where grass of green could once be seen, are only gray and brown.\
113My childhood home, while I did roam, became a place of sadness.\
114Now I return, my heart does yearn for times of light and gladness.''
115* The title character of ''Literature/StepsisterFromPlanetWeird'' is from a shapeshifting alien race that lives off helium. When her Earthling stepsister walks in on her sucking the helium from a party balloon as a snack, the alien tries to explain herself and is surprised that her human form suddenly has a high, squeaky voice.
116[[/folder]]
117
118[[folder:Live-Action TV]]
119* One death in ''Series/OneThousandWaysToDie'' (#226, to be exact) involved a teenage couple breaking into a large helium-filled basketball due to this trope. By the time they realized they couldn't breathe, they were in no state to find the seam again. Presumably based on this [[http://darwinawards.com/darwin/darwin2006-05.html 2006 Darwin Awards story.]]
120* In an episode of ''Series/TheAdventuresOfBriscoCountyJr'' Brisco and several of his companions board a blimp created by Professor Wickwire. The blimp uses helium, and the trope is invoked.
121* ''Series/TheBigBangTheory'':
122** In the episode "The Vengeance Formulation", when Sheldon appears on the National Public Radio talk show Science Friday, his enemy, Barry Kripke, fills his office with helium.
123** An inversion happens in the episode "The Launch Acceleration", where Leonard shows Penny how the sulfur hexafluoride he uses in his experiments causes deep voices.
124** The already squeaky-voiced Bernadette claims that her brothers once forced her to inhale helium, when she tried to call for help only the dog could hear her.
125* On ''Series/{{Cheers}}'', Norm and Cliff sing "Lollipop" this way at Rebecca's bridal shower until Frasier stops them. They then join in his rendition of "Isn't It Romantic" after inhaling helium again, whereupon Frasier pops one of their balloons in a rage.
126* ''Series/{{CSI}}'': In "The Finger", a kidnapper inhales helium capsules to disguise their voice when making ransom demands.
127* ''Series/TheDayToday'' uses the trope to [[https://www.youtube.com/watch?v=w6UhXivPyw4 particularly hilarious effect]] in a report on Sinn Fein. In a case of ArtImitatesLife, ''The Day Today'' mastermind Creator/ChrisMorris, as a junior in radio, released helium into Creator/TheBBC's air vents just as the news was about to be broadcast.
128* ''Series/DoctorWho'' uses this for a non-comedic purpose in "[[Recap/DoctorWhoS14E5TheRobotsOfDeath The Robots of Death]]". After the villain controlling the robots orders them to kill the humans (except himself), the Doctor gets Leela to open a cylinder of helium so that robots won't recognize the villain's voice and kill him. The Doctor is unaffected by the helium, due to his BizarreAlienBiology.
129* On her talk show, Ellen [=DeGeneres=] decided to put deep-voiced ''Series/AmericanIdol'' winner Scotty [=McCreery=] to the test. The [[https://www.youtube.com/watch?v=SY0we-OJS0c results]], or lack thereof, were amusing.
130* The ''Series/{{Eureka}}'' episode "What Goes Around Comes Around" has a particle accelerator that's cooled by liquid helium. Naturally the cooling line breaks and everyone becomes squeaky for about half a scene until they can shut the line off.
131-->'''Carter:''' Why are we talking like Chip N' Dale?
132* In ''Series/{{Farscape}}'', Rygel will, if nervous or angry, [[BizarreAlienBiology fart helium]]. Anyone in close proximity to him will start speaking in a high-pitched voice.
133* ''Series/{{Frasier}}'': While acting in a radio play Niles has to improvise a voice on the spot for "Pepo the Dwarf". After realising that crouching below the microphone won't work on radio Frasier grabs a balloon (which are popped to simulate gunshots) and hands it to Niles so he can inhale the helium for a high-pitched voice.
134* One episode of ''Series/{{Friends}}'' has Chandler inhaling helium and singing "I Will Survive".
135* On ''Genius'', Dave Gorman and guest Neil Innes couldn't resist giving this a try when someone suggested Helium-filled bubble wrap.
136* The Spanish GameShow ''Series/ElGranJuegoDeLaOca'' (The Great Game of the Goose) had this as one of the challenges. The contestant was blindfolded and had to [[https://www.youtube.com/watch?v=O8ppdkkIAyA guess the voices]] of the show's hosts and characters after they sucked helium from a machine.
137* [[https://www.youtube.com/watch?v=qhYaYuc0WJE The Helium Chorale]]. Scottish comedy duo Hale and Pace slaughter Händel's "Hallelujah" chorus. Cue instant loss of dignity.
138* An episode of ''Series/HannahMontana'' had Miley and Jackson throw a makeshift party for Robbie Ray and invite a few people, one of whom is the guy who blows up the balloons.
139* One episode of the sixth season of ''Series/HellsKitchen'' had Sabrina, Tek and Amanda messing around with helium while blowing up balloons for a dinner party, even going so far as to imitate Ramsay.
140* {{Zigzagged}} on ''Series/ImpracticalJokers'' when Murr has to deliver a speech while going back and forth breathing helium and sulfur hexafluoride, making his voice go higher and lower.
141* On the February 23, 1987 episode of ''Series/{{Jeopardy}}'', an Audio Daily Double in the category of "Chemistry" saw host Creator/AlexTrebek inhale helium before delivering the clue "Type of gas I just inhaled that makes me talk like this."
142* ''Series/{{Kaamelott}}'': After messing around in Merlin's laboratory, Perceval and Karadoc manage to make a potion that makes them sound like this. It also makes them invulnerable, but apparently they kept talking throughout an entire battle, because Lancelot snaps and tries to kill them.
143* In ''Series/MyNameIsEarl'':
144-->'''Randy:''' ''[inhales balloon air; in helium speech]'' [[Film/TheWizardOfOz We represent the lollipop guild, the lollipop guild, the lollipop]]--\
145'''Darnell:''' Randy, those aren't helium balloons.\
146''Randy:''' ''[normal voice]'' Aw, too bad.
147* ''Series/MythBusters'' not only does this during experiments where helium is involved, but they've also used sulphur hexafluoride, a gas six times denser than air, to get the opposite effect, with a DontTryThisAtHome warning from Adam right before he starts inhaling the stuff ("[[AC:And my voice gets really low, although somehow I'm still funny. It's scientific!]] [[EvilLaugh HAHAHAHAHA!]]") Watch it [[https://www.youtube.com/watch?v=d-XbjFn3aqE here]].
148* Once on ''Series/ThePriceIsRight'', announcer Rich Fields inhaled helium before reading the prize copy as part of a Showcase skit. He then did it again for his signoff.
149* One episode of the Canadian sketch show ''Series/TheRedGreenShow'' opens with Red demonstrating how to cheat on a physical exam using helium to reduce your weight by inflating a swimming pool floaty with the helium and putting it in your pants. Needless to say, the plan backfires when the floaty explodes as soon as Red closes the door to his van. "OhTheHumanity" he exclaims in a helium voice.
150* ''{{Series/Scorpion}}'': In "Dam Breakthrough", the team needs helium balloons. Toby inhales from a tank and starts singing "Grandma Got Run Over by a Reindeer". Cabe, looking incredibly serious, also inhales some and continues singing. Happy breathes some in and finishes the verse, culminating in a rare slight giggle from her.
151* In a [[https://www.youtube.com/watch?v=9SwQtVsRXsc scene]] from ''Series/{{Scrubs}}'', J.D. talks about a nervous patient who accidentally inhaled air from a helium tank.
152* In one episode of ''Series/SpecialUnit2'' they found the Pied Piper of Hamlin (or at least one of his species) acting as a kid's show host and using his music to make the viewers commit crimes. The agency determined that they needed to alter his instrument so it dropped half an octave to break his control, then discovered that the instrument was fake and that the music was his own voice, so Nick shot a few nearby balloons while he was playing.
153* ''Series/TopGear'' once tested how well the roofs of old convertibles had held up by putting the presenter in their vehicle with an open tank of helium. [[https://www.youtube.com/watch?v=-zcBMVkVT4I James and Jeremy's]] roofs were in good condition and held in the helium, resulting in them getting squeaky voices. Richard's [[TheAllegedCar heavily-modded]] convertible allowed the helium to leak and didn't change his voice at all, much to his disappointment.
154* There was also an episode of ''Series/WheelOfFortune'' where, on a set decorated with balloons, neither Pat Sajak nor Vanna White could resist.
155* Parodied in ''Series/WillAndGrace'', where Jack and Karen attempt this trope. Jack successfully pulls it off, but Karen's voice doesn't change, due to it already being high-pitched.
156[[/folder]]
157
158[[folder:Music]]
159* Music/{{Ween}}'s ''Push Th' Little Daisies'' is popularly but erroneously believed to invoke this trope. Also overlaps with LyricalDissonance.
160[[/folder]]
161
162[[folder:Video Games]]
163* In ''VideoGame/ConkersBadFurDay'', if you use the first ContextSensitiveButton for a second time after Conker's hangover is healed, he'll pull out a helium canister, which Birdy will snatch and huff (as if he was drinking a beer, actually):
164-->Really nice helium, heheheh.
165* In ''VideoGame/Crysis2'', [[GeneralRipper Commander Lockhart's]] [[LargeHam hammy]] exhortations to his men to kill you can be made even more comical via an [[EasterEgg easter egg]] that you can trigger to release helium into his room.
166* ''VideoGame/GothamKnights2022''. Harley Quinn does this while talking to the player character, before using the balloons to float the book out of her cell. May be a MythologyGag on the high-pitched voice of her animated character.
167* In ''[[VideoGame/GuiltyGear Guilty Gear Xrd]]'', one of the items Faust can throw at random is a bottle of helium that serves no purpose other than giving the one who touches it a comically high pitched voice for a lengthy period of time.
168* In ''VideoGame/KingdomHeartsIII'', an optional conversation in the Toy Box can be triggered by striking the valve of a helium tank or popping balloons, which causes everyone's voice to become high-pitched. They all have some fun talking in their new helium-induced voices...except Donald, who isn't affected at all.
169* ''VideoGame/{{Madagascar}}'': Marty can obtain this during King of New York by popping at least 6 balloons.
170* Guybrush in ''VideoGame/MonkeyIsland2LeChucksRevenge'', shown through giving his dialogue lines a tiny font (the remake of the game has voice acting, so you get to hear it). Also used in ''VideoGame/TheCurseOfMonkeyIsland'', which had voice acting as well.
171* Rayman uses this practically in the opening of ''Rayman VideoGame/RavingRabbids 2''. You'll see.
172* ''[[VideoGame/SamAndMaxFreelancePolice Sam & Max Save the World]]'': In "Situation: Comedy", Bosco's "chemical-based voice modulator" turns out to be an inhaler with a helium balloon and a crazy straw attached, but it lets Sam sing high notes. [[DreadfulMusician Not perfectly]], but well enough to [[GlassShatteringSound break glass]] and impress one of the judges on ''Embarrassing Idol''.
173-->'''Sam:''' (''in a squeaky voice'') Holy chipmunk arias warbling out of a souped-up 78-speed turntable, it works!
174* In ''VideoGame/TheSimpsonsGame'' one of Homer's powers is inflating himself in which he'll say random dialogue in helium speech. "I'm slightly lighter than air".
175* The Science Vessel in ''VideoGame/StarCraft'' has this as one of their StopPokingMe sounds:
176-->I think we may have ''(shift)'' gas leak.
177* In ''VideoGame/DeepRockGalactic'', the Ritch Atmosphere modifier causes all dwarves to speak faster and at a much higher pitch.
178[[/folder]]
179
180[[folder:Visual Novels]]
181* Used in the prologue of ''VisualNovel/Ever17''. Before visitors can enter the underwater theme park of [=LeMU=], they must go through a compression chamber and adjust to the change in air pressure via helium. Earphones are given to each visitor to make everyone's voices sound normal, but when Takeshi removes them and talks to an already high-pitched Coco...
182[[/folder]]
183
184[[folder:Web Animation]]
185* ''WebAnimation/DSBTInsaniT'': This is emulated with Balloon's voice.
186* Daniel Floyd of ''WebAnimation/ExtraCredits'' constantly narrates his videos with a voice that sounds like it's been computer-shifted into this.
187* ''WebAnimation/HappyTreeFriends'': Cuddles pulls this in "[[Recap/HTFFromAToZoo A to Zoo]]" with a helium tank for inflating balloons. Of course, it's ''Happy Tree Friends'', so eventually he manages to [[EyeScream impale and inflate his eyeball with it]], which later traumatizes Flaky.
188* ''WebAnimation/HomestarRunner'':
189** Played with a bit in the appropriately named WebAnimation/StrongBadEmail "[[Recap/StrongBadEmailE38Helium helium]]". Strong Bad inhales some helium, and sings a little song about being in "the High-Voice Crew". The Cheat tries it and suffers an InflatingBodyGag, but when Strong Mad tries to do this it has no effect on him:
190--->'''Strong Mad:''' ''[usual guttural half-shout]'' THIS IS MY FUNNY VOICE! ''[speaks louder for emphasis]'' ''THIS IS MY FUNNY '''VOICE!!!!'''''
191** However, the later [=SBEmail=] "[[Recap/StrongBadEmailE152ISP isp]]" shows that [[MakesJustAsMuchSenseInContext sucking up BANDWIDTH has this effect on Strong Mad]].
192--->'''Strong Mad:''' (''in a high-pitched voice'') [-I'm a website!-]
193[[/folder]]
194
195[[folder:Web Original]]
196* A young couple earned a mention on the Website/DarwinAwards web archive, having remained inside a large helium-filled (and oxygen-deficient) inflatable chamber, laughing about their own altered voices, long enough to pass out and die.
197[[/folder]]
198
199[[folder:Web Videos]]
200* In the ''WebVideo/BadCallTV'' episode "[[https://www.youtube.com/watch?v=fVasBa2jgXs You Got the Flight Stuff, Baby,]]" one man winds up with this voice after consuming enough Pepsi to gain the ''Seven Million Pepsi Points'' required for a Harrier Jump Jet that was (jokingly) mentioned in the commercial. Sadly, this is only [[http://en.wikipedia.org/wiki/Leonard_v._Pepsico,_Inc partly fictional]]. No, one man didn't actually drink ''that much'' Pepsi, but he did manage to convince enough people to give him their Pepsi Points to try for the plane.
201* In the MusicalEpisode of ''Series/FlandersCompany'', Armand Trueman breathes in a helium balloon so he can sing with a high-pitched voice.
202
203[[/folder]]
204
205[[folder:Western Animation]]
206* This happens to Krumm in ''WesternAnimation/AaahhRealMonsters'' where he swallows a helium tank that not only causes his voice to be high-pitched, it even causes him to float in the air, being supported by a string to keep from floating away.
207* ''WesternAnimation/TheAmazingWorldOfGumball'': Alan [[AnimateInanimateObject the balloon]], and all his family members, all have pitched up voices.
208* ''WesternAnimation/BatmanTheBraveAndTheBold'': Batman teams up with the Metal Men, a team of periodic element-themed robots, to fight the Gas Gang, a team of slightly-less periodic element-themed animated gas clouds (one of them's named Chloroform) in the episode "Clash of the Metal Men". Helium's [[WhatKindOfLamePowerIsHeartAnyway only power is to give people]] Helium Speech. Luckily for him, he's the kind of guy who thinks [[AngstWhatAngst that gag never gets old]]. Truthfully though, when used on Batman, it's [[TheComicallySerious hilarious]].
209* An early ''WesternAnimation/BeavisAndButtHead'' episode had the duo steal balloons from a vendor in order to get high from the helium after they inhale it and comment how funny they sound they exclaim "Oh no, we're neutered!"
210* ''WesternAnimation/BobsBurgers'' has one episode at a party where Tina and Louise inhale helium. Bob then asks Tina for some and sucks some in.
211* In an episode of ''WesternAnimation/ClassOf3000'', helium is released into the cooling vents as a practical joke. Those affected included [[CoolTeacher Sunny Bridges]], [[ButtMonkey Kam]], [[BookDumb Li'l D]], and Principal Luna. Notably, it didn't affect [[GeniusDitz Philly Phil]], who thought his voice would sound weird.
212* Used in ''WesternAnimation/ClerksTheAnimatedSeries''; Silent Bob inhales helium and stands in silence for several seconds. Jay tells him in exasperation, "It's only funny if you talk, stupid."
213* ''WesternAnimation/DcSuperheroGirls'': One episode has Supergirl chasing Catwoman through a science museum. Catwoman is toying with Supergirl throughout the chase, and at one point she lets loose a canister of helium and a canister of sulfur hexafloride, which causes Supergirl's voice to go up and then down.
214* Happened unintentionally to WesternAnimation/EarthwormJim in the animated series, with Peter Puppy being unable to stop laughing.
215* ''WesternAnimation/FamilyGuy'':
216** A cutaway shows Stewie doing helium at a birthday party:
217--->'''Stewie:''' I'm a female! I have a high voice! I have reproductive organs inside of me, and I buy groceries!
218** Another episode had Peter shooting a parade balloon of Brian after the latter becomes the new Pawtucket Patriot mascot, causing everyone on the ground to talk like this. [[NoSell Except for Jerome, who says he's impervious to it]].
219* Happens once in ''WesternAnimation/FanboyAndChumChum'' when Boog's [[BubbleBoy plastic bubble]] gets filled with helium, right as he's about to punch the titular characters. He notes that it's VERY hard to sound threatening with his voice like that.
220* ''WesternAnimation/{{Futurama}}'': The Planet Express crew have to rescue "helium miners" from ''inside the Sun''. Bender convinces them to sing Camptown Races.
221-->'''Leela:''' Attention, helium miners! Can you hear me?\
222'''Miners:''' For God's sake, help us! We're in agonizing pain!\
223''[Fry, Leela and Bender giggle]''
224* In an episode of ''WesternAnimation/JonnyQuestTheRealAdventures'', this briefly happened to Jonny and Hadji because helium is sometimes used in deep-sea diving equipment to reduce the risk of the Bends. Hadji commented it makes them sound like cartoon characters.
225* In ''WesternAnimation/HomeMovies'' episode "It Was Supposed to Be Funny," Brendon and Jason take balloons and candy over to Melissa's house, and after she says, "It'll take more than balloons and flowers for me to forgive you, Brendon Small," and upon her departure, her dad says to the boys, "Could I have some of that candy?" the three male characters suck in helium on Melissa's dad's couch -- the moment highlights that they're all very stuck in boyhood.
226* Falsetto Jones, the villain of the week on ''WesternAnimation/KimPossible'', has an extremely high-pitched voice due to a freak accident involving helium (hence his name).
227* ''WesternAnimation/TheLooneyTunesShow'': Daffy starts speaking like this in "Mr. Wiener" after he inhales a tank of helium to stretch his stomach to win a hot dog eating contest.
228* In ''WesternAnimation/PhineasAndFerb'', one of Dr. Doofenshmirtz's evil plans involved filling the entire tri-state area with "Doofelium" making his high squeaky voice lower in comparison because making his own voice lower would be too much of a hassle. Ended up affecting himself and yelling out his catchphrase [[OncePerEpisode ("Curse you Perry the Platypus!")]] in helium speech.
229* One episode of ''WesternAnimation/TheProudFamily'' had Oscar and Felix trying to remove a mouse from the Proud house, culminating in them deciding to fumigate the place and then accidentally filling the tent with helium, [[RuleOfFunny causing the house to be uprooted and fly off]] with Suga Mama still inside. When they get the house back down offscreen, Suga Mama lambastes Oscar in a high-pitched voice.
230* ''WesternAnimation/RobotChicken'' depicts Franchise/AlvinAndTheChipmunks as having fairly deep voices until Dave floods the recording studio with helium in an attempt to asphyxiate them, but [[BlackComedy kills them in the process]].
231* In an episode of ''WesternAnimation/RocketPower'', Sam accidentally spreads the "Fiji Flu" to his friends, where one of the side effects is having a very high-pitched voice.
232* In the ''WesternAnimation/ScrewySquirrel'' cartoon "Lonesome Lenny" at one point Screwy sticks Lenny's head into a bucket of alum and he says while his head is shrinking "Why did you put my head in the bucket, George? You shouldn't have put my head in the bucket, George, why did you do it?" in a high pitched voice.
233* In an episode of ''WesternAnimation/Sealab2021'' in which a Franchise/{{Predator}} was running around the place killing people, Dr. Quinn had the bright idea to mess around with the station's atmosphere in an attempt to hinder the alien aggressor. This ended up pumping a lot of helium into the air vents, which resulted in the crew laughing uproariously over how one of them sounded like [[Franchise/AlvinAndTheChipmunks a Chipmunk]]... who is then killed by the Predator, [[BlackComedy the crew laughing at his high-pitched screams of agony]].
234* ''WesternAnimation/TheSimpsons'''s Sideshow Bob, while broadcasting his plan to destroy Springfield from inside the Duff blimp in "Sideshow Bob's Last Gleaming"; Lisa figured out where he was from the squeaky voice, and she and Bart head out for the Duff blimp. After Bob finishes his speech in his chipmunk voice, he says "Pesky helium! Shoo! Shoo!" and waves his hands, and his voice goes back to normal.
235* {{Inverted|Trope}} in ''WesternAnimation/TheSmurfs1981'' episode "The Magic Egg", where Clumsy gets a deeper voice when he is turned into a giant.
236* Inverted with Plo Koon in ''WesternAnimation/StarWarsTheCloneWars'', who speaks in a low, deep voice, despite the fact that he breathes helium.
237* In the ''WesternAnimation/TotallySpies'' episode, 'Ho Ho Ho No', Sam uses an 'Osmosis Bubble Suit' to sneak inside the villains weather balloon, gaining a helium voice once inside. Later in the episode, she knocks the villain into the balloon using the suit, with him also receiving a squeaky voice as his gondola crashes.
238
239[[/folder]]
240
241[[folder:Real Life]]
242* Creator/TonyShalhoub used it in the ''Film/MenInBlack'' movies, for the bits when Jack Jeebs's head is growing back after being blown off by either Agent J or Agent K, but the rest of the time, he uses the same voice he uses on ''Series/{{Monk}}''.
243* Creator/TreyParker actually inhaled helium to voice one-off character David Nelson in the Season 11 premiere of South Park, "With Apologies to Jesse Jackson".
244* This trope often shows up in works set deep underwater, like the book ''Literature/{{Sphere}}''. This is TruthInTelevision to some extent; the nitrogen in normal air becomes toxic at very high pressure, so deep divers breathe a gas mixture that has had some or all of the nitrogen replaced with helium. However, films in such settings often purposely ignore the effect when it should be present. Having live actors breathe helium for every line would be distracting to the audience, not to mention being somewhat dangerous and ridiculously expensive.
245* A new trend around anime conventions: getting voice actors to say their characters' famous lines after inhaling helium. HilarityEnsues, usually.
246-->'''Creator/TravisWillingham:''' My friends wanna know, "When you go out of town, what do you do?" "Oh, you know, [[BreadEggsMilkSquick eat cake... huff balloons...]] [[https://www.youtube.com/watch?v=YZFIxM7SWr0 make a big dumbass out of myself..."]]\
247'''Creator/VicMignogna:''' [[Manga/FullmetalAlchemist Don't call me small]] -- ''[barely avoids headslamming the table]'' [[https://www.youtube.com/watch?v=lRq9Y4sMUMI I'll break off your feet and stick 'em on your head!]]"
248* {{Inver|tedTrope}}sion: [[https://www.youtube.com/watch?v=d-XbjFn3aqE sulfur hexafluoride]] is heavier than air, and thus sound travels slower through it and it makes your voice deeper.
249* Subverted, then inverted progressively harder as you continue down the noble gases, as demonstrated [[https://youtu.be/rd5j8mG24H4 here.]] By the time the guy gets to xenon, he sounds like [[Franchise/PowerRangers Zordon.]]
250* A pair of Darwin Award winners tried invoking this trope for laughs, though they chose to do so in an idiotic and dangerous way; rather than inhaling from party balloons, they shoved their torsos into a roadside advertisement balloon, and stayed there for long periods of time. Needless to say, they died of suffocation, and were only discovered after a highway patrol officer saw their corpses sticking out of the now deflated balloon.
251[[/folder]]
252
253!!!Instances where no helium is involved
254
255[[folder: Films - Animated]]
256* In the climax of ''WesternAnimation/TheEmperorsNewGroove'', after Yyzma gets transformed into a cat, her voice becomes high pitched as if she inhaled helium.
257* Happens to Mario and Bowser after they get shrunken from eaten Mini-Mushrooms in ''WesternAnimation/TheSuperMarioBrosMovie''.
258* In ''WesternAnimation/{{Up}}'', Alpha's malfunctioning TranslatorCollar makes him talk like this. The collar's normal voice is deep and menacing, of course.
259[[/folder]]
260
261[[folder: Live-Action TV]]
262* In one episode of ''Series/LateNight with Creator/DavidLetterman'' where the theme of the night was audience voting, the audience voted to have Dave's and his guest's voices [[https://www.youtube.com/watch?v=f4Z4dyVANA8 electronically modified to sound as if they had inhaled helium.]] Dave's guest (Jane Pauley) refused to talk after that.
263[[/folder]]
264
265[[folder: Video Games]]
266* One of the SillinessSwitch available in ''VideoGame/DieHardVendetta'', called the "Pinhead Mode" (the reverse of BigHeadMode, obviously). Everyone have their heads shrunken and sounding like chipmunks, and all that.
267* ''VideoGame/FireEmblemEngage'': Hortensia, the second princess of Elusia and Ivy's younger sister, talks in this kind of voice when she is not sad or distressed, having a very high pitched and squeaky voice in the English dub.
268* Miis in ''VideoGame/MarioKart'' have become (in)famous for the pitch of their voice. They don't actually inhale helium, though.
269* While no helium is actually involved, in the musical level of ''VideoGame/SuperMarioBrosWonder'', "Piranha Plants on Parade", the Piranha Plants all sing in very high-pitched chipmunk-like squeaky voices.
270[[/folder]]
271
272[[folder: Western Animation]]
273* In the ''WesternAnimation/AdventuresOfTheGummiBears'' episode "A Gummi by Any Other Name," Zummi Gummi uses a spell to alter Duke Igthorn's voice so that he sounds like a gerbil on helium. He does this on purpose because Princess Calla is using Zummi's magic hat to impersonate Igthorn.
274* WesternAnimation/DonaldDuck: TropeCodifier and he could be the {{Trope Namer|s}}. The [[Website/{{Wikipedia}} Other Wiki]] even has him as the Trope Namer!
275* The ''WesternAnimation/LooneyTunes'' short "Long Haired Hare" does a ResizedVocals example of this. Bugs Bunny replaces an opera singer's throat spray with liquid alum; as he does warm-up exercises singing Figaro, each time he says it his head shrinks and his voice becomes higher-pitched.
276* In ''WesternAnimation/SouthPark'', there's the dwarf Dr. David Nelson in the Season 11 premiere "With Apologies to Jesse Jackson" who talks in this kind of voice.
277* ''WesternAnimation/TotalDrama'':
278** Noah gets one of these in ''Total Drama World Tour'' after a serious GroinAttack with a golden statue head.
279** Harold gets one in the finale after Courtney {{Groin Attack}}s him, hilariously, he does a literal ''speech'' while in InstantSoprano mode.
280* Characters in ''WesternAnimation/TotallySpies'' speak in a high-pitched voice when [[SuperDeformed chibified]], but only in the sixth season.
281[[/folder]]
282
283[[folder: Real Life]]
284* ''WesternAnimation/LiloAndStitch'': Chris Sanders, the movie's director, pulls this off without helium when providing the voice for Stitch.
285* Creator/WayneBrady of ''Series/WhoseLineIsItAnyway'' was known for pulling this off ''without actual helium.''
286[[/folder]]

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