* SOON. [[labelnote:Explanation]]Ever since the very first concept art was posted Animation Do's home page, that picture was posted pretty much ''every single day'' (sometimes even multiple times a day) on /a/ for ''over a whole year'' until the first animated commercial happened. The picture was always posted together with only one word - "SOON".[[/labelnote]]
* Senpai, notice me!
** Senpai finally noticed you.
* Makoto's shovel.
* Rin's [[SlasherSmile shark teeth.]]
* The show called "the fastest growing tumblr fandom"
* In addition to the nickname "Swimming Anime", there's also "Swimming [[YaoiGuys Yaoi]]" due to the [[HoYay presumed]] homoeroticism the show will have.
** Other nicknames include "Swimbros" and "Boku no Swimbros", the latter being a reference to the infamous (not to mention Memetic) Shotacon hentai series Boku no Pico.
* Don't call her Gou/Her name is Kou. [[labelnote:Explanation]]Rin's sister dislikes her masculine-sounding name "'''G'''ou" and prefer the more feminine way her name can be read, "'''K'''ou". So naturally, if someone refers to her as '''G'''ou, it has to be corrected.[[/labelnote]]
** Gou is [[AudienceSurrogate my spirit animal]].
* It's becoming popular for the ''Manga/AttackOnTitan'' fandom to make references to the series, especially cosplayers commenting on how to get [[CrowningMomentOfFunny the fangirls' attention after the Free! cast took it away from them.]]
** Another overlap with the ''Attack on Titan'' memes includes [[http://www.youtube.com/watch?v=tML0GaXxkwA Shingeki no Shitstorm]], a video meant to serve as a TakeThat to the anti-fujoshi {{Hatedom}} that appeared in response to ''Free!'' and its growing fandom of yaoi fangirls.
** Then the [[http://www.youtube.com/watch?v=RKq5CMUQG8I parodies]] of the ending with ''Manga/AttackOnTitan'' [[http://www.youtube.com/watch?v=mbInu28Z9AY characters.]]
** Also the similarities between Eren and Haruka- what with the former being obsessed with killing Titans and the latter with swimming.
* Some people predicting it to have a sudden shift into psychological horror by episode three have taken to calling it "Drowning Anime".
** ...which became hilarious after episode 3 when [[http://sam-littlecookie.tumblr.com/post/55774626096/remeber-this-xd#notes this happened]]
** ...and then horrifying after episode five.
** Related to the 'drowning anime' predictions, many also started guessing that the anime would turn into Anime/PuellaMagiMadokaMagica.
* [[spoiler: Nagisa dies]]. [[labelnote:Explanation with HUGE spoilers for CLANNAD ~After Story~]]A crossover meme with ''VisualNovel/{{CLANNAD}} ~After Story~'', since both shows 1) are made by KyoAni and 2) feature a character named Nagisa, and everybody who watched ''CLANNAD ~After Story~'' knows that, [[KillTheCutie well]]... [[/labelnote]]
* Nagisa does drugs. [[note]]To some, this is the initial reaction to his "purifying salt" from episode 1; since then, the scene has spawned several jokes revolving Nagisa and drugs.[[/note]]
** [[ScaryBlackMan Thugisa.]] [[labelnote:Explanation]][[WebAnimation/FiftyPercentOff 50% Off]] took the above and ran with it.[[/labelnote]]
* Haruka's obsession with water and stripping whenever he sees a pool/Haruka is [=H2Osexual=] [[labelnote: Explanation]]After episode 1, Haruka X Water jokes exploded across the Free!dom, mostly involving Haruka stripping at the mere sight of water, being attracted to water, etc, etc. It only got worse after episode 2 showed him seriously considering ''climbing into a '''fish tank''''' at a hardware store. He admitted that he fell in love with a waterfall when he was younger.[[/labelnote]]
* "When you're ten, they call you a prodigy. When you're fifteen, they call you a genius. Once you hit twenty, you're just an ordinary person." (Repeated on Tumblr ad infinitum)
* Megane Makoto!! [[note]] Makoto with glasses got ''instantly'' popular after the ED art for episode 4 [[/note]]
* Depicting Rin as being secretly protective of Kou and being angry about her being around a bunch of topless bachelors all the time is quite common amongst fan artists.
* [[http://24.media.tumblr.com/73abcceaa8550abe235a47a3204ccbbd/tumblr_mqfdn31lj41qid3hgo1_500.gif Why the FUCK do you relate this show to ours?]] [[note]]It's a well-known fact that ''Free!'' and ''Manga/AttackOnTitan'' have FriendlyFandoms, and it's also well known that their tones couldn't be more different. The gif was one that made its way around the internet via a tumblr post with the caption, "Nagisa and Makoto watch ''Attack on Titan'' and wonder why the FUCK you relate this show to theirs."[[/note]]
* Rin's AustralianAccent [[note]]Considering that Rin lived in Australia for approximately three years, it has become very common to depict him with an Australian accent when speaking English in fanworks.[[/note]]
* It's a popular joke amongst the fandom to wonder how Haruka would respond to Disney/TheLittleMermaid. Specifically, how everyone knows he'd be outraged at how [[http://24.media.tumblr.com/38747fcba7829a8d84cbf85f0825e68e/tumblr_mrg0wd130s1sbs8dho4_500.jpg Ariel is willing to give up a life of swimming forever in exchange for human legs.]]
* Depicting Rei as [[spoiler:being dead after the end of episode 5 happened]] became quite popular on tumblr.
* Rin's "boyfriend senses" in regards to him sensing Haru's actions has become quite a thing on Tumblr.
* Nagisa isn't just a shota. [[http://31.media.tumblr.com/33d772e7190763299d780ac6285c5376/tumblr_mpl6ngXO471s03lilo1_500.jpg He's a seme, too.]]
** He's also a little shit. [[note]]The phrase "Nagisa you little shit" is so commonly used on Tumblr, it became its own official [[http://www.tumblr.com/tagged/nagisa-you-little-shit]] tag.[[/note]]
* Some fans noticed [[http://25.media.tumblr.com/f238cf30022b47151d25778ee179da51/tumblr_ms9ut4nEOa1rwbtiuo1_1280.png a resemblance]] between minor character Coach Sasabe and rap artist {{Macklemore}}. As a result it's common to refer to the character as "[[FanNickname swimming Macklemore]]".
* [[http://reapersun.tumblr.com/post/59472979409/3rd-year-nagisas-growth-spurt-for-buddens Growth Spurt!]] [[http://everyredqueen.tumblr.com/post/58285240277/if-you-tell-me-you-dont-want-third-year-nagirei Nagisa]].
* [[http://i.imgur.com/8ShDNVV.jpg Third Year!]] [[http://i2.pixiv.net/img80/img/loyalists/39251428_p7.jpg Nitori]]
* Seijuro Mikoshiba? You mean [[FanNickname Captain Abs]]. Also, his and G/Kou's [[OneTruePairing "future beautiful red-head babies"]].
* Cop!Rin in the second season ending gyrating his hips. [[http://ksexyncute.tumblr.com/post/90675062052 It's everywhere!]]
** A common conviction on Tumblr is that Rin's specifically a cop-themed ''stripper''. [[SarcasmMode "Rin's a real cop like I'm a jelly donut"]] and similar phrases have become a thing.
* The end of episode 7 introduces Kisumi AKA "[[FanNickname the Strawberry Cotton Candy Kid]]".
** Kiss Me
* "DON'T YOU 'FUTURE FISH' ME!!" and the like became popular after the heartbreaking ending of episode eleven being quickly offset by the inappropriately happy ending song.