History YMMV / AzumangaDaioh

** "America Ya!" "Hallo! Hallo! Hallo!" [[labelnote:Explanation]]A scene from the anime's 20th episode where Ayumu imagines herself landing in the United States, saying the first line as she leaves the plane, and being greeted by a large group of "Americans" (Which are actually chibi versions of Chiyo), all repeating "Hallo!", a GratuitousEnglish typing of "Hello". It became a RunningGag on several sites, mainly Platform/TikTok, for one person to say "America ya" and everyone else to reply with "Hallo".[[/labelnote]]

** "America Ya!" "Hallo! Hallo! Hallo!" [[labelnote:Explanation]]A scene from the anime's 20th episode where Ayamu imagines herself landing in the United States, saying the first line as she leaves the plane, and being greeted by a large group of "Americans" (Which are actually chibi versions of Chiyo), all repeating "Hallo!", a GratuitousEnglish typing of "Hello". It became a RunningGag on several sites, mainly Platform/TikTok, for one person to say "America ya" and everyone else to reply with "Hallo".[[/labelnote]]

** Waifu[[labelnote:Explanation]]A GratuitousEnglish rendering of "wife" used by Mr. Kimura when revealing his longtime marriage to the main cast. The silly nature of the word instantly caught on among fans as a way of referring to female characters considered attractive, received a DistaffCounterpart in the form of "husbando," and eventually exploded into the wider English lexicon, being invoked even among those who never heard of ''Azumanga Daioh''.[[/labelnote]]

** Sakaki is popularly considered autistic by the manga's neurodivergent fanbase. Much of it revolves around her obsessive interest with animals, which can be easily interpreted as a special interest: it forms a large part of her daily life, tends to define her leftfield trains of thought, and ties into her tendency to worldbuild on the spot, whether it be for stuffed animals or real creatures that she encounters. Outside her interest in animals, she displays difficulty with socializing, which her peers initially misconstrue as being aloof and prickly, yet counters this with an unusually strong sense of empathy, even if it's for a cat that actively antagonizes her.

* {{Moe}}: The series itself is something you can curl up with, but Chiyo-chan is Moe to the ''n''th degree (''[[ExaggeratedTrope especially]]'' [[ExaggeratedTrope when she's in the penguin suit]]), and Osaka and Kaorin are also incredibly cute. Osaka may actually be at least partially responsible for the popularization of the concept, placing second in the 2002 Saimoe Tournament. This series is sort of [[UrExample proto-moe]] itself, as it [[TropeCodifier codified]] a lot of tropes related to the "genre" ([[UnbuiltTrope even though there's more focus on humor than cuteness, and Chiyo is really the only character whose cuteness is emphasized]]).

** Osaka's Kansai-ben dialect in the Japanese version is often translated into a SouthernBelle-based dialect in English translations of the series. This idea originated from ADV's dub of the anime; they chose a Texas accent based off of the stereotypes of both Osakans and Texans as loudmouthed, brash rednecks (a stereotype Osaka's character humorously subverts). While initially controversial (in part due to Kansai-ben having a very large number of potential analogs across the US), it ultimately stuck, to the point where both official and fan-made newer translations incorporate it. She's given equivalent dialects in different countries, and the Korean translation outright renames her Busan (after a similar region in South Korea).

* PopularityPolynomial: While not quite at the same heights as it was in the early-to-mid-2000s, the series picked up a greater following on social media at the start of the 2020s after undergoing a slump in the 2010s due to SeinfeldIsUnfunny, as well as Creator/ADVFilms' bankruptcy rendering the anime legally inaccessible outside of Japan for a long while[[note]]the manga was still in print thanks to a new translation by Creator/YenPress, but anime has a much stronger grip on the public consciousness in the Anglosphere[[/note]]. In particular, a [=TikTok=] account dedicated to the series, azumemes, quickly became popular and gained over ten thousand followers. This can partially be attributed to nostalgia, but many of the series' new fans are people too young to have experienced its heyday, who instead appreciate how relaxed and refreshingly low-key the series is compared to its modern day counterparts.

* SacredCow: Out of all the SchoolgirlSeries out there, ''Azumanga Daioh'' is the most fondly remembered overall. Past the series' time in the spotlight, its genre was often accused of being oversaturated in the mid-to-late 2000s due to [[SeinfeldIsUnfunny how influential the series was for establishing that very genre to begin with.]] Despite this, people can and will often complain about the comedy or {{moe}} in everything else except ''Azumanga''. Being the TropeCodifier for most of the tropes and character types common to the genre helps, as does the fact that it manages to come off as refreshingly more subdued and character-driven compared to the increased focus on {{Moe}} appeal and escalating zaniness of its successors.

* SeinfeldIsUnfunny:
** It's difficult to overstate how influential the series was on pop culture in ''general'', especially in Japan. When the series first became popular, the concept of a manga/anime that focused solely on [[SliceOfLife the ennui of everyday high school life]] was a novel one. It crystallized basically every single SchoolgirlSeries trope, featuring a varied cast with distinct, realistic personalities, and with more focus on the female characters' various quirks than on {{Fanservice}}. These days however, when nearly every schoolgirl comedy has hit the same beats as ''Azumanga'' with increasingly quirkier settings or situations, it can be difficult to see how a series about the ordinary lives of ordinary girls was such a landmark.
** Likewise, its western fandom in its heyday was massively influential on online culture, most notably bringing "waifu" into popular jargon singlehandedly. Osaka in particular was omnipresent on imageboards, and the series' fanbase and fan content helped integrate anime into the broader internet community and laid the groundwork for how many later fandoms operated. From a modern perspective however, it can be hard to understand what was so important about its following when its most distinctive traits are now considered the bare minimum for a sizable fandom.

* QuirkyWork: A SliceOfLife SchoolgirlSeries-- debuting at a time when those weren't particularly common-- with copious amounts of SurrealHumor and Japanese cultural references that wouldn't make much sense to a western audience.

** Jason Douglas, the dub voice actor for Chiyo's dad, would later go on to voice [[Anime/DragonBallZBattleOfGods Beerus the Destroyer]] a decade later. This is especially noticeable during his final scene in this show, where Chiyo's Dad sounds eerily similar to Beerus as he yells at Osaka for comparing him to Bill Clinton.
** Creator/LuciChristian, Yukari's voice actress in the dub would later go on to voice [[Manga/OnePiece Nami,]] [[Manga/FullMetalAlchemist the 2003 versions of Wrath and Truth]], [[Webcomic/HetaliaAxisPowers Hungary]], and [[Manga/MyHeroAcademia Ochaco "Uravity" Uraraka]].

** Saata Andagi![[labelnote:Explanation]]Osaka repeats this term ad infinitum during one scene in the Okinawa arc. Fans took to this instantly, depicting sataa andagi as Osaka's TrademarkFavoriteFood and parodying her repetition of its name.[[/labelnote]]

** Osaka's Kansai-ben dialect in the Japanese version is often translated into a SouthernBelle-based dialect in English translations of the series, based off of perceptions of Texans as similarly loudmouthed and brash (a stereotype Osaka's character humorously subverts). While initially controversial (in part due to Kansai-ben having a very large number of potential analogs across the US), it ultimately stuck, to the point where both official and fan-made newer translations incorporate it. She's given equivalent dialects in different countries, and the Korean translation outright renames her Busan (after a similar region).

* PopularityPolynomial: While not quite at the same heights as it was in the early-to-mid-2000s, the series picked up a greater following on social media at the start of the 2020s after undergoing a slump in the 2010s due to SeinfeldIsUnfunny and due to Creator/ADVFilms' bankruptcy rendering the anime legally inaccessible outside of Japan for a long while[[note]]the manga was still in print thanks to a new translation by Creator/YenPress, but anime has a much stronger grip on the public consciousness in the Anglosphere[[/note]]. In particular, a [=TikTok=] account dedicated to the series, azumemes, quickly became popular and gained over ten thousand followers. This can partially be attributed to nostalgia, but many of the series' new fans are people too young to have experienced its heyday, who instead appreciate how relaxed and refreshingly low-key the series is compared to its modern day counterparts.

* SacredCow: Out of all the SchoolgirlSeries out there, ''Azumanga Daioh'' is the most fondly remembered overall. Past the series' time in the spotlight, its genre was often accused of being oversaturated in the mid-to-late 2000s due to how influential the series was of establishing that very genre to begin with. Despite this SeinfeldIsUnfunny situation, people can and will often complain about the comedy or {{moe}} in everything else except ''Azumanga''. Being the TropeCodifier for most of the tropes and character types common to the genre helps, as does the fact that it manages to come off as refreshingly more subdued and character-driven compared to the increased focus on {{Moe}} appeal and escalating zaniness of its successors.

** Kaorin gained a surge in popularity on social media during the turn of the 2020s, thanks to a mix of her being seen as [[LGBTFanbase positive LGBTQ+ representation]] and the [[TransparentCloset humorously blatant]] presentation of her sexuality.

* WhatDoYouMeanItsForKids: The series' sizable PeripheryDemographic leads some people to believe it's a Seinen series — being aimed at teenage boys, it's actually a shonen series, as the manga ran in the shonen magazine ''Dengeki Daioh''.

** Although being a CloudCuckoolander is a part of her charm, it's sometimes hard not to feel for Osaka's inability to stay focused, let alone succeed.

** If gayness was a scale from 1 to 10, where 1 is "would go gay for a celebrity" and 10 is "only thinks about stuff that's gay"... Why, I'd be... [[{{Pun}} a lesbillion!]][[labelnote:Explanation]]A popular pair of [[https://i.redd.it/rm2db7av2xm11.png edited panels]] from the Extra Lessons strip where Kaorin [[SupsiciouslySpecificDenial attempts to deny that she's gay]] so that she's instead humorously blatant about it, commonly used by lesbians when asserting their sexuality.[[/labelnote]]