Anyone with a basic knowledge of physics knows how sound waves work. Anyone who's been up close to the stage of a rock concert can tell how well they work when it gets loud.
This, though, is that feeling taken beyond what's possible in real life. A sound or series of sounds, if sufficiently loud, will push someone or something around as would the wind of a hurricane or tornado, well beyond what would happen in the Real Life. This trope is almost always played for laughs, but the Rule of Cool has it weaponized now and then as a type of non-standard elemental damage combining aspects of Blow You Away, Glass-Shattering Sound, and Explosion Propulsion.
Note, however, that this doesn't cover sounds that are genuinely that loud, like a rocket launch, nor does it cover giant monsters like Godzilla or King Kong roaring in someone's face, where their breath would come into play.
In Real Life, sounds loud enough to move objects are above decibel level 194. At this level, they are no longer sound waves moving through the air so much as they are shock waves pushing the air along in front of them. You don't want to be anywhere near a place where this trope is happening in real life. It's not a gale, it's a battering ram.
Contrast this trope to Brown Note and Loud of War, where the sound has a purely psychological effect on the target, as opposed to the physical effect of gale-force sound. See also Glass-Shattering Sound, where the effect is limited to glass. Make Me Wanna Shout has a similar effect, but only caused by a person's voice, and it's less frequently used for comedy, and Musical Assassin, who may use their music for this effect (but just as likely play Brown Note music).
- Jay Garrick, the original Flash, is fond of using him signature winged helmet as a weapon. One of the methods is to "aim" the inside of it at someone then punch the top of it, creating a loud sonic boom.
- A Chance Meeting Of Two Moons: Artemis's Royal Canterlot Voice is sufficient to knock Solaris backward during an argument.
- Escape From the Moon: In the sequel The Mare From the Moon, Twilight manages to send Spliced Genome flying by the sheer force of the Royal Canterlot Voice when she gets angry at Spliced saying she'd abused Spike by the way she raised him not to horde.
- My Little Pony: Equestria Girls Rainbow Rocks: When Rainbow Dash repeats "my band" one time too many, all the other Rainbooms yelling "OUR BAND!" together is enough to blow Dash's hair back.
- In The Rescuers Down Under, Wilbur is playing loud music and can't hear Bernard and Miss Bianca calling him. As Bernard walks over to Wilbur's boom box to turn it off, he is clearly being blown back by the sound.
- In The Sword in the Stone, after being crowned King of England, an overwhelmed Arthur tries to sneak out of the castle. Unfortunately, every way he goes he encounters a huge crowd of cheering subjects who blow him and Archimedes the owl back inside with their cries of "HAIL KING ARTHUR! LONG LIVE THE KING!"
- Near the beginning of the first Back to the Future, Marty hooks up an electric guitar to a ludicrously huge speaker. He plays a single chord and is physically hurled backwards by the sound (the speaker is destroyed in the process).
- Kung Fu Hustle features the Harpists, two villains who fight their opponents by playing a guqin (Chinese zither) that makes sounds loud enough to knock people down. This is easily topped by the Landlady's "Lion's Roar" technique, which shakes buildings and cracks stone columns. When this fails to affect the Beast, the Big Bad of the story, her husband helps her rip the top off a funeral bell and holds it up for her to use as a megaphone. The result is a sonic tornado that reduces the room to splinters, with the Beast becoming a rapidfire participant in Oh, Crap! and Blown Across the Room. This does hurt the Beast, and when she moves in to give him a second dose, he promptly surrenders. NOT.
- Near the end of Teenage Mutant Ninja Turtles II: The Secret of the Ooze, Mike and Don send Shredder flying by turning the speaker he's standing in front of at maximum and hitting a chord.
- In Cheech and Chong's Next Movie, Cheech has a devil of a time getting inside his own home when Chong's playing a solo. Chong's playing also blows playing cards away, causes dogs to cover their ears, and makes neighbors take cover.
- In The Italian Job (2003), The Napster wants a stereo so loud "it'll blow a woman's clothes off." In the end credits, it apparently works.
- Bedknobs and Broomsticks: STOP! THAT! BAAAAAAAALLLL!!!"
- In Black Books, Manny bets Bernard that he can sell a book to the next person to enter the shop; he tries it, but doesn't even get as far as "hello" before the customer unleashes a furious rant about not wanting to be pestered by salespeople in shops, the force of which blows Manny's hair back.
- The video to the Nickelback song "Gotta Be Somebody" demonstrates the trope nicely, with cracks in the ground and general earthquakes accompanying the refrain each time.
- Manowar have slipped the occasional line about getting this loud into their song lyrics, perhaps most prominently in "The Gods Made Heavy Metal".
- In the video of the Lindsey Stirling song "Roundtable Rival", the guitarist's amplifiers are able to blow down Linsdey and her backup dancers. Lindsey uses the same amplifiers to even greater effect against the guitarist when she plugs in her Stroh violin.
- Space Ace has Kimberly do this over videophone
- Viscera Cleanup Detail: Among the game's normal in game radio "the big banger" which appears on every level, The game also has one unique "The Bigbanger: Supernova Edition" in game radio. While the bigbanger sound players are described by in game documents as a model that has won a contest by having "Earth-shattering" loudness, the normal Bigbanger radios players encounter simply produce sufficient sound to broadcast music throughout the level and shakes itself while doing so. The "Supernova" edition of the player, however, can produce music that is obviously louder than any in game sound effect, at the same time shaking every object in the area, sends all the small objects in the vicinity flying, setting all the flares alight, detonating any dynamite within medium range, and shakes the bucket machines and bin machines in to producing buckets and bins.
- The Killer Wail from Splatoon exhibits this effect, but only against entities who have deployed a Bubbler or transformed into a Kraken, due to the invincibility effect provided by those. It is impossible to tell if this effect works on normal Inklings, typically because they do not last long enough.
- The Whiteboard: Doc using new speakers
- Schlock Mercenary: "If you want to really yell at somebody, Doctor, do it from the diaphragm."
- Questionable Content: In A Very Sweet-Tits New Year Part 1.
- El Goonish Shive:
- In a parody of the Maxell ad mentioned elsewhere, in Coach Random a character turns on an uberstereo and gets blasted completely out of his seat.
- Freefall: In this strip, Mr. Raibert gets a demonstration on the improvements in small speakers over time, getting blasted by a shouting Max Post over the phone, in a Shout-Out to the old Maxell cassette ad demonstrating this trope.
- In the Teen Titans mini-episode featuring Punk Rocket, Punk Rocket's guitar playing acts like this.
- From Transformers Animated, there's the rock battle between Optimus Prime and Soundwave, in "Human Error, Part 2".
- In Strawberry Shortcake, before Berrykin Bloom started taking lessons his bassoon-playing shook the ground, to the point of knocking people over.
- My Little Pony: Friendship Is Magic:
- Happens in "The Show Stoppers" when the Cutie Mark Crusaders sing the line "VERY LOUD!!!"
- In the episode "Luna Eclipsed", Princess Luna, using the Royal Canterlot Voice, has this effect.
- "Putting Your Hoof Down": Fluttershy does this three times; when she screams "NOPONY!!!" at the end of her rant before leaving town, again when she says to her little critters friends "Am I RIGHT??!!", and again when she exclaims to Rarity and Pinkie Pie that Old!Fluttershy is "GONE!!"
- "Wonderbolts Academy": The sheer force of the sound from Pinkie Pie's oversized megaphone moves mountains.
- "Daring Don't": In Rainbow Dash's recalling of Daring Do's adventure in the intro, Ahuizotl's roar sends Daring Do tumbling backward in a very strong wind.
- "Testing Testing 1, 2, 3": Rainbow Dash's scream of "Enough!" has this effect on her friends, instantly putting a stop to their bickering.
- "Rock Solid Friendship": After a failed attempt to pass Tank the tortoise off as a rare rock, Pinkie Pie yells "Whose side are you on, Tank?!" loud enough to send him flying off-screen.
- In a Garfield and Friends Quickie, Roy and Lanolin get into a bleating-and-bukawking fight, which Roy wins utilizing a huge Behind the Black stereo system that sends Lanolin flying quite a distance in front of a Wraparound Background.
- In the Wakfu episode "The Black Raven", Miranda yelling for her husband Kabrok blows back Amalia's hair.
- Ed, Edd n Eddy: In "Little Ed Blue", a grouchy Ed reaches the breaking point and yells "BIG TROUBLE!!!" loud enough to knock Edd over and rip Eddy's shirt off.
- Kaeloo: Mr. Cat can yell loud enough to send a car (with Kaeloo and Stumpy inside) flying several feet away.
- In the Donald Duck short Donald's Dream Voice, Donald drops one of his voice pills and it lands on the hat of a large brute. When Donald tries to ask him for it, he yells "WHADDYA WANT?!" fierce enough to blow Don away.
- Happened to Dave Seville in an episode of Alvin and the Chipmunks, also strong enough to cause the wall to break.
- Tiny Toon Adventures: How I Spent My Vacation: Fowlmouth takes Shirley on a date to the movies, and the ridiculously loud "sound system promo" blows several audience members out of their seats.
A division of Mucasfilm Ltd.
"The audience is now deaf"
- OK K.O.! Let's Be Heroes: In "My Fair Carol", Enid puts on some romantic mood music for Carol and Mr. Gar's date, but she plays it so loud Carol has to shout so Mr. Gar can hear her. She ends up shouting loud enough to knock over not only Mr. Gar, but Rad, K.O., and Enid who are way over on a nearby hill.