->''"Feeling screwed up at a screwed up time in a screwed up place does not necessarily make you screwed up."''
-->-- '''Mark Hunter'''

A 1990 movie written and directed by Allan Moyle and starring Creator/ChristianSlater, ''Pump Up the Volume'' features the exploits of Mark Hunter, a recent transfer to Hubert Humphrey High in Arizona, where he spends his days as a moping teenager and spends his nights running a [[BuccaneerBroadcaster pirate radio]] station under the moniker Happy Harry Hard-on.

While entertaining the locals, his show becomes more political as he takes on the local school over injustices done toward the local student body. He goes from an underground favorite to a controversial figure overnight, however, when one of his call-in guests claims to be contemplating suicide... and then actually does it after hanging up on Harry.

The film underperformed at the box office, but has become a cult favorite since its release. In the long term, it's perhaps most notable for featuring the debut of Samantha Mathis (''Film/BrokenArrow1996'', ''Film/LittleWomen'', ''Film/AmericanPsycho'') and its soundtrack, as well as an early performance by Creator/SethGreen.

!!This film contains examples of:

* AudienceMonologue: Several throughout the film. The audience in this case is Harry's listeners, as well as the viewer.
* BigBad: Principal Crestwood
* BrickJoke: "Is it bigger than a baby's arm?"
* BuccaneerBroadcaster: Mark as "Harry". Just to hammer it in, the F.C.C. is called in on the final act.
%%* BurnBabyBurn
* CantStopTheSignal: The very last scene is Mark being arrested by the police... and a number of teenage [[BuccaneerBroadcaster Buccaneer Broadcasters]] starting to broadcast (encouraged by Mark/Harry and his "speak up!" last speech) throughout America as the film fades to black.
* CatchPhrase: Several, as Harry is very quotable. "So be it." "Take cover, Arizona!" "I'm done, stick a fork in me." "Turn on the truth!" "Talk hard," and so on.
* CensorshipBureau: The F.C.C. form up a SternChase posse during the final act. The Principal tries her hardest to be this, but it becomes increasingly notable to the ones looking that she is just escalating her fascist methods and stopping to bother with covering them up.
* ClarkKenting: Mark needs glasses and seemingly can't speak above a mutter, which initially convinces Nora that he can't be Harry.
* ChekhovsGunman: We're introduced to some students on the bus in the very first scene, whose names come up much later as Mark's platform to rail against the injustices at the school. Luis Chavez and Cheryl Biggs are called in to see the principal, and we see a shot of the (unnamed) Malcolm.
* ComingOfAgeStory: By the end of the movie,[[spoiler: Mark decides not to disguise his voice anymore and is finally able to talk publicly when he gets caught, overcoming his fear.]]
* DeadpanSnarker: Most of the teen cast, but Mark/Harry especially. "Are you going to write a letter to your friends back East?" "No, I thought I'd send away for an inflatable date."
* TheDragon: Mr. Murdock, to Principal Crestwood
* DrivenToSuicide: [[spoiler: Malcolm.]]
* EatingLunchAlone: Used as a way to highlight Mark's isolation in his school. Also a plot point, as it allows [[spoiler: Nora to identify him, in the stairwell.]]
* FunWithAcronyms / WeCare: BIONIC ('''B'''elieve '''I'''t '''O'''r '''N'''ot, '''I''' '''C'''are)
** Also in universe, it's Hubert Humphrey High, and Happy Harry Hardon. This explains why the students gather in front of their school entrance, where the building reads H.H.H., to listen to him.
* TheGruntingOrgasm: Parodied by the main character.
* HippieTeacher: Averted with the guidance counsellor. Played straight with Miss Emerson. ZigZagged with Brian, Mark's dad, who was this until he became an administrator. "I still love my job...and power and money."
* IntrepidReporter: "This is [[AlliterativeName Shep Sheppard]], reporting..."
* JerkJock : The story about the jocks by the lake.
* LargeHamRadio: "Harry". Every broadcast scene up until the very last one is just Mark unleashing his inner (''very'' foul-mouthed) LargeHam.
* MadeMyselfSad: Mark, but luckily, he was too depressed to kill himself.
* MemeticMutation: In-universe, the students at Humphrey hang posters and spray-paint Harry's catch-phrases everywhere.
* MostWritersAreWriters: Mark is a talented writer, and his English teacher is trying to get him to write for the school paper.
* NiceJobBreakingItHero: A tragic example in the "advice" Harry gives to Malcolm.
* NoDeadBodyPoops: Averted after the call-in guest kills himself, Harry talks about suicide during the following broadcast, citing being found after the inverse of this trope kicks in as one of the reasons suicide is bad. "Girls you never spoke to are going Why Why Why?...And you've got a load in your shorts!"
* OpenMindedParent: Mark's parents are such stereotypical baby boomers that it's vaguely ridiculous, but they're absolutely ''delighted'' at the idea that Mark has been sneaking Nora into the house under their noses. Of course, at the time they find out, they think Mark's the pirate DJ they're hearing about on the news, so it beats the alternative.
* PlayfulHacker: Happy Harry is a pirate radio equivalent.
* ReasonableAuthorityFigure: Mark's Dad and English teacher play it straight, Principal Crestwood and Mr Murdock are notable aversions.
* ShirtlessScene: Involving both Christian Slater and Samantha Mathis.
* {{Slimeball}}: Deaver the guidance counselor is a creep who takes orders from Crestwood to validate the expulsion of "undesirable" students while pretending to care about them. Crestwood herself is a whole lot worse (not only creating this policy (and enforcing it through flat-out illegal means) in order to get better grades and thus up the school's funding, but she calls the expelled students "losers" when confronted about this).
* SmokingIsCool: Slater smoked so many cigarettes while making the movie, mostly while filming Mark's rants, that he made himself physically ill.
* SmugSnake: Crestwood.
* {{Spoonerism}}: Charles [[PrecisionFStrike "Chuck" U. Farley]]
* StalkerWithoutACrush: Nora's interest in Mark, at first, is an attempt to solve the mystery of Harry's identity. She more or less stops stalking him when she finds out who he is.
* StupidStatementDanceMix: One of the earliest examples, when Joey (a young SethGreen) makes one from Harry's on air conversation with Mr Deaver, the guidance counsellor.
* TitleDrop: averted.