* AlternateCharacterInterpretation: [[FanDumb Slughorn is a big fat pedophile.]]
** [[AlternateCharacterInterpretation Harry]]...[[FoeYay Potter]]?
** In the film, when Harry jumps through the wall of fire to pursue Bellatrix, Lupin is the first of the adults to run forward. Is he concerned for Harry's safety, or is he going after the woman who killed his best friend? Probably both.
* BigLippedAlligatorMoment: The Burrow-burning and Bellatrix's appearance in TheMovie; WordOfGod says The Burrow attack was to bring the threat of the Death Eaters more close to home to the characters than Hermione reading about it in the papers, but it still arrives and leaves without another word in true [=BLAM=] fashion.
** Not to mention the diner scene at the beginning of the movie, with a waitress hitting on Harry.
* BrokenBase: The book that ignited the greatest quantity of flame wars on forums. Especially over the ShipSinking.
* DoubleStandardAbuseFemaleOnmale: To say the least of the infamous bird attack scene. Many a RonTheDeathEater fanfics will have Ron attack Hermione in a fit of jealousy. Hermione attacks Ron, ''in canon'', and it is for the most part swept under the rug. [[note]]While both sides ''are'' portrayed as being petty, Hermione is still never called out on for resorting to violence.[[/note]]
* DracoInLeatherPants: Hey Draco, that's a [[SharpDressedMan nice suit]] you got there. Of course, it helps that [[spoiler:Draco starts to become a lot more pitiable by the end of the book, what with it being revealed that he's terrified of dying and/or causing the death of his family.]]
* FanNickname: Disappointment in the movie caused some fans to nickname it "Harry Potter and the Half-Baked Script".
* FoeYay: Thank God Harry's obvious obsession with Draco was eaten by ''[[HeroesWantRedheads the giant chest monster]]'', who decided to save the appearances just in time. Note that the word 'obsessed' is used in-story by both the narrator and a rather-concerned Ron.
* HarsherInHindsight: The film hijinks involving Ron and Lavender lose luster in retrospect [[spoiler: as Lavender gets a surprising, startling, and horrifying death-by-adaptation in the last film.]]
** Seeing the Marcus Belby character may be hard to watch once you find out what [[CruelAndUnusualDeath happened to his actor.]]
* HilariousInHindsight: In the first book, Ron sees in the Mirror of Erised himself as Head Boy and holding the Quidditch Cup. He manages both (almost, as he became a Prefect) in this book and film.
** Also a little [[HarsherInHindsight harsh]] considering that [[spoiler:Ron never attends his last year at Hogwarts, meaning that there's a chance that he could have qualified for Head Boy but still couldn't take the position]].
* InternetBackdraft
** Outside of the ShipToShipCombat, words can not describe the level of backlash fangirls displayed when Blaise Zabini was revealed to be, wait for it, ''black.'' Which was followed by "Wait, Blaise is a DUDE!?" Pretty much making thousands of Female Blaise fics void (or just a different genre now).
** The rage over [[spoiler: Harry/Ginny]], on the other hand, could get [[http://wiki.fandomwank.com/index.php/JKR_lying_about_sick_husband truly scary]]. But, of course [[http://scott-lynch.livejournal.com/139991.html there are ways of dealing with this]]...
*** There were also a lot of complaints from ''non''-shippers who were bothered by the book's focus on romance. Probably at least in part a HypeBacklash due to the massive focus those subplots got in the eyes of the rest of the fandom, but even so, it's a little unreasonable that they expected a book about 16-year-olds at a boarding school ''not'' to discuss dating and romance.
*** Still others dislike the pairing simply because [[FelonyMisdemeanor Harry nailed his]] [[AndThatsTerrible best friend's little sister]].
* ItWasHisSled: [[spoiler:Snape kills Dumbledore.]]
* JerkassWoobie: Morfin Gaunt. While he is established to be a fairly nasty wizard, it becomes hard not to feel sorry for him after he loses his father to Azkaban and Voldemort frames him for three of the murders he committed. Dumbledore himself lampshades it.
* MemeticMutation:
-->''[[spoiler:Snape kills Dumbledore!]]''\\
''[[http://www.youtube.com/watch?v=4x_WUb68RQo Nooo! You bitch! You bitch!]]''
** Similarly, "[[spoiler:SNAPE KILLS DUMBLEDORE]] ON PAGE 606/596." (page 606 is commonly used as it has Harry explicitly saying "[[spoiler:Snape killed Dumbledore]]," but the actual death occurs on 596. Or 566/556, depending on which edition you're reading.)
** Amusingly, someone changed the Wikipedia page for the book to spoiler the ending. The IP address traced back to the HQ of the Minnesota Republican Party.
** "Snape!" [[HaveAGayOldTime ejacu]][[SaidBookism lated]] [[{{Squick}} Slughorn.]]
* NeverLiveItDown
** Poor, poor Ginny. There's no evidence that she goes further than kissing with anyone, and with a grand total of ''two'' boys before [[spoiler: Harry]], and yet [[http://ginny-haters.livejournal.com/ the bashers]] are all too happy to label her the "Hogwarts whore". Especially amusing as Ginny has to put up with the same accusations from her brothers in the very same book. [[ShutUpHannibal She swiftly shuts them up.]]
** Draco's NoHoldsBarredBeatdown of Harry on the train.
* NightmareFuel: One word: Inferi.
* RelationshipSue: Some fans who weren't happy with [[spoiler: Harry and Ginny]] getting together accused Ginny of being this, since she's attractive, popular, sharp-minded and level-headed. And bears a distinct resemblance to [[OedipusComplex Lily, Harry's mother]].
* RomanticPlotTumor: Thankfully avoided. Although the book takes a greater focus on adolescent romantic histrionics than the others in the series, it doesn't dominate the main plot.
* ShipToShipCombat: This book caused the shipping wars in the fandom to go ''nuclear'', to the point of Emerson, the founder of Mugglenet, accusing some shippers of FanDumb in an interview. J.K. Rowling's reaction to this was akin to "Oh shit. Did you just say that? Do you want the rabid shippers to slit your throat in your sleep?" and she ''refused'' to call "a significant part of my fanbase 'deluded'". In spite of her refusal, angry fans made it seem like she had personally insulted them and spat into their faces.
* StrangledByTheRedString: Whether or not the books did this with the Harry/Ginny pairing is a [[BrokenBase major point of debate]] for fans of the series. [[RuleOfCautiousEditingJudgment And that's all that should be said about that]], but it's at least important to remember that they're still hormonal teenagers, even if they are magical heroes, and that it isn't too unbelievable an occurrence in RealLife.
** Lupin and Tonks. In ''[[Literature/HarryPotterAndTheHalfBloodPrince Half-Blood Prince]]'', Harry sees Tonks upset several times and thinks it's [[spoiler:over Sirius dying]], and that maybe she was even [[KissingCousins in love with him]]. Then the climax reveals that Tonks is deeply in love with and wants to marry Lupin. They proceed to do so despite having no interaction on camera before this. As the books are primarily written from Harry's perspective, it's somewhat understandable that plenty of major events can happen off-camera simply because Harry can't be present for every single storyline. At the same time, the reader can still feel left out as the key parts of the RomanceArc never actually happen in front of ''them'' either.
** Also happens InUniverse in ''Literature/HarryPotterAndTheHalfBloodPrince'' when Ron consumes a love potion from Romilda Vane, who he has never met, that was intended for Harry.
* ToughActToFollow: Both the book and the film got hit with this. Partly because ''Deathly Hallows'' deviated so much from the pattern of the previous books.
* WhatAnIdiot: [[SarcasmMode Oh sure Harry, it is absolutely fine to use a combat spell from a book edited by an unknown person against Draco without bothering to fid out what it does; after all it is labeled "Against Enemies"]]. WhatCouldPossiblyGoWrong [[spoiler:For the uninitiated, the spell turns the target into proverbial Swiss cheese, making them bleed out like a skewered animal]].
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