In the wake of defeating SpongeBob SquarePants at the 2008 Kids' Choice Awards, the pervasive meme was this quote from Azula, after she beats some people at volleyball.
Prince Zuko: the Master Cockblocker. Explanation
Referring to a truly epic instance of Getting Crap Past the Radar when Zuko accidentally interrupts Sokka and Suki's attempts to have sex. Later on, when they go to the theater, he sits between Aang and Katara just as Aang was trying to sidle up "smoothly" to her.
Sokka mentions the group's incredibly bad luck immediately before a giant water serpent attacks some pursuing enemies, allowing them to escape and prompting this line.
A character who's only defined trait was to collapse into a frothing seizure upon mention of the Avatar
This one only pops up among the anime fanbase, with which the general Avatar fanbase has some crossover, but mentioning the series on an anime discussion board will generate numerous cries of "Anime ja nai!" ("Not an anime!") or links to Gundam ZZ's opening.
With the debut of the Promise comics comes the fandom's general confusion (and amusement) at Aang and Katara calling each other "sweetie." Some find it endearing, others, not so much. Either way, there's no shortage of jokes about it.
The Racebending community was created in protest of casting decisions made by M. Night Shyamalan for The Last Airbender. Named after the hiring of Caucasians playing Aang, Sokka and Katara as well as brown people as the Fire Nation. Thus, phrases like "Aang ain't white" and "Aang Can Stay Asian And Still Save the World" became popular among some Avatar fans.
It has become popular to make light of the Unfortunate Implications of the Race Lift that occurred in the movie by saying: "Wait, so the good guys are white and not Asian? What a twist!"
Before the movie had even come out, early test screening reviews mentioned a scene that has turned the phrase "punching the fish" into a meme◊*
He actually stabs it with a knife.
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Speaking of Movie!Zhao, did you hear that he found a secret library? He got a scroll that his men are trying to decipher, did he mention that it was a SECRET LIBRARY?Explanation
The wonderful Rufftoon of deviantART, who worked as a storyboard artist on the animated version, pointed out that Zhao mentioned the library (That's supposed to be a secret) several times, as compared to the one time it was vaguely mentioned in the series. The meme was created after she posted a series of humorous guides and overviews of the movie. The one containing this meme is here: http://rufftoon.deviantart.com/gallery/?q=zhao+movie#/d2t9n4h
X scene was cut from the movie because it was too "distracting".
The amazing line Yue says in the movie, "We need to show them that we believe in our beliefs as much as they believe in their beliefs." is very popular in capslock_atla. What is this, Gurren Lagann?
Speaking of which, there's a spiritual place. The city was built around this place.
My brother and (insert girl's name here) became friends right away.
To get airbending tattoos, you have to meditate...for long periods of time, without losing focus. Some of the great monks...can meditate...for four days. Explanation
Stoicness. Dramatic emphasis. Unnecessary information sharing. All rolled...into one.