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.
"Thank you, the universe." Explanation 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.
"Wait, did Jet just die?" "You know, it was really unclear." Explanation The writers hanging a lampshade on the fact that Executive Meddling had forced them to leave Real!Jet's fate unclear.
Often warped into, "Wait did X just X?" "You know, it was really unclear." For example, from The Legend of Korra: "Wait, did the Lieutenant just die?" "You know, it was really unclear." Or "Wait, did Mako even break up with Asami?" "It was really unclear."
You got that right, twinkle-toes! Explanation Toph's name for Aang, used throughout her conversations with him.
WANG FIRE! The supernatural embodiment of manliness and beards!Explanation The name Sokka uses when he disguises himself with a beard, while in the Fire Nation
I AM MELON LORD! MUA-HA-HA-HA-HA!Explanation The name Toph creates for a training dummy, briefly treating it as a real person.
I'd like to spend my vacation AT THE LIBRARY!Explanation Sokka's failed attempt to be dramatic.
SECRET TUNNEL! SECRET TUNNEL! Through the mountain! SECRET, SECRET, SECRET, SECRET TUNNEL! Yeah!Explanation A bard in "Cave of Two Lovers" begins ad-libbing this song rather loudly the moment he hears about the tunnel.
Hey, I remember that line of the song! AND DIED....
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 Boulder. An obvious parody of The Rock.note "The Boulder feels conflicted".
Parody would've been further enhanced had they succeeded in their attempt to get him to voice the character.
Further enhanced instead by having his old tag-team partner Mick Foley voice the character. Explanation Foley voiced the Boulder with the same tone that he used to poke fun at the Rock with, making the Boulder a parody of a parody within a parody.
It was a normal day, but then everything changed when the Fire Nation attacked.Explanation Started on Tumblr (linked above), when someone thought that it would be humorous to add the tag to everything. Another reason was the fans noticed that a handful of important characters in the series were orphaned by Fire Benders, which became the series scapegoat.
"But then, everything changed when the Water Tribe attacked." Explanation The second season premiere of The Legend of Korra has the Northern Water Tribe invading the Southern, and it's hard not to draw parallels.
Zuko the awkwardturtle-duckExplanation: Scenes for Zuko Alone and the third season show that Zuko was fond of the the turtle-ducks in the palace garden's pond. Fans thought it was cute and endearing.
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.
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◊note He actually stabs it with a knife..
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
PEBBLE DANCE!◊ Explanation Six earthbenders. Four seconds of kata. One rock, slightly larger than a human head.
Bill: Let us never speak of what just happened again.
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.