The Forbidden Five: Mario Bros.., Ice Climber, Punch Out, Super Mario Bros. 1 and The Legend of Zelda I: the five NES games in the Nintendo GameCube version that were not available by regular in-game means or by giveaways on the official Animal Crossing Web site. Mario Bros. and Ice Climber were eventually given out by e-Reader cards, and code generators were used to obtain Punch-Out, but the two other games remain available only through cheat devices. (Some use the variation of "Forbidden Four" and exclude Punch-Out from the list due to it being obtainable freely in the game without any extra purchases, even though it wasn't given out officially.)
Population Growing: The international Gamecube one is called this in order to contrast it with "Wild World". "City Folk" (Let's Go to the City), and "New Leaf". The name comes from the tag line.
Players often refer to the tactical flashlight as the "Nuclear Powered Flashlight" because of it's ability to blind other players even in daylight
Also referred to occasionally as the "Solar Flare Flashlight" because the blinding effect has been compared to the intensity of the Sun.
The Dr. DoomTank for the Tunguska, because it possesses Hidden Missiles.
The WeskerHelicopter for the Viper, because of how nigh-unstoppable it is with the right attachments.
Guns that shoot with little or no recoil are commonly referred to as lasers.
PTFO and PTFO'ing: This means "Playing The Fucking Objective", used to describe playing with teamwork, squad tactics and actually trying to win the game and not just about your KDR.
The term "Try Harder" crossed over from the Call of Duty fandom into the Battlefield community via youtube commentators who are involved with both games.
In Battlefield it means someone playing overly serious and not PTFO'ing because they are trying to get a leet KDR. It's generally an insult, especially when the person doing it actually sucks even when try harding.
"Putting on your try hard pants" means switching from 'for fun' weapons and playing outside your best roles, to using your best weapons and roles, playing as seriously as you can can to win the match. When groups of high quality players end up in a single public server, it can lead to the entire server putting on their try hard pants. In Clan matches it's already assumed everyone has their try hard pants on already and thus the term is only meant in the context of pub servers.
Combat Amphibians, Fight Frogs, or any synonym for "battle" and "toads" stuck together - Battletoads.
In the English version of BlazBlue, Taokaka calls Noel "Lacking Lady".
Shitty Kitty: Taokaka.
Nu-Gundam: v -13-'s 4th color in her DLC pack is a Gundam.
Gay Man: Bang wearing his pink costume. His butt whistles when he flies!
Clap Loop / The Clapper: Again, Carl. This involves positioning Nirvana right behind the opponent and repeatedly keeping the opponent juggled in the air while throwing them. Only certain characters can escape this loop, and only under certain circumstances.
Assdrill Finish / Asstroll Finish: Relius' Astral Heat, where it's heavily implied he rapes the opponent. Since the first footage of it was done on Ragna, the first one seems to be the more popular. Tsubaki also has a "hard" time getting out of the light due to the way she is restrained in the Astral Heat.
Rapelius Clover for the same above.
Asstroll Finish also serves as another Fan Nickname of a Meta Game tendencies of trying to fish in an Astral Finish just to rub salt to the wounds of the would-be defeated player, like delaying your fight by not using Barrier Burst, filling your meter up to 100 and sparing the enemy to ensure the Astral setup doesn't accidentally kill the opponent. Of course, done unskillfully, then it would backfire and could cost you the round or even the whole match.
Babality/Sethan: Amane's Astral, where he turns everyone into younger versions of themselves.
Team Douchebag: The duo of Terumi Yuuki and Relius Clover, for their over the top Complete Monster tendencies.
Uncle Pringles - The nickname Chinese fans give to Captain Price. Apparently for his distinctive handlebar mustache.
Noob Tube - the underslung grenade launcher you can apply to most assault rifles. When killed with it, the correct response is "Fuckin' Noob Tube!" (c.f. Metroid)
The term is far older than Call of Duty; it's as old as the M203's appearance in videogames, and older noob tubes used to be far worse, with huge splash damage that would sometimes even ignore walls. Imagine the Javelin glitch, only it's a ranged attack, doesn't kill the player who uses it, and is the game functioning exactly as it's supposed to. Before that, your noob tube was typically your rocket launcher.
Pro Pipe - Coined by the people who defend the Noob Tube and say that it's NOT a noob weapon.
Which of course leads to "Grenade of Grenades: Modern Grenades"
The Deer Hunter - The M40 Sniper Rifle in Modern Warfare, which looks like something you'd see when hunting.
The M40 is based off the Remington 700 series of rifles, a popular hunting rifle which is also featured in the game.
Cpt./Sgt. Jack Bauer - Nickname given to one of your Marine squad mates in World at War, Sgt. Roebuck, as he is voiced by Kiefer Sutherland.
"Call of Grenade: Munitions Factory at War" is not the best WW2 game of the series, 2 or 1 is.
"Cock of Doody 4: Modern Gayfuckstupid" - Deragatory name for Call of Duty 4 said by the Master Chief in Arby 'n' the Chief, who is a parody of your typical Halo fanboy. Naturally, it spread to the Internet.
EasyMode Gun- The P90 SMG in Modern Warfare which has the second-or-third highest rate-of-fire in the game with the largest magazine of any non-machine gun weapon in the game and still does average damage.
Stay Frosty: OSCAR MIKE (Ramirez do everything) for Modern Warfare 2's... liberal use of Military jargon.
The original Call of Duty is confusing as the entire series is 'Call of Duty' which led to the use of 'vCOD' or Vanilla Call of Duty when referring to the first game.
Left-Leaning/LL'ing - Refers to rapidly tapping the lean key around a corner without being able to be shot. Naturally, only is used in Call of Duty games that have the leaning feature.
Killbomb - Used when referring to the level of kills one has achieved when playing the game. For example, someone may say they dropped a 40-bomb on one game, where others say they dropped a 60-bomb. Like all stats, there's no way to prove it unless you're actually in the game where you get that many kills. Saying it then is subject to people seeing you as taking the gameway too seriously. Which takes us to...
Tryharder - Used when referring to someone that's taking a casual game like they're playing in a gaming tournament. Parody of the people in question's overuse of the term 'Cry harder'. May or may not overlap with “Stop Having Fun” Guys.
This has crossed over into the Battlefield community via a number of Youtube commentators who play both series.
Many people refer to the recently released Black Ops as Cod Blops, likely because BO for it is a rather unfortunate and misleading abbreviation.
Black Cops, an obvious racism joke, but surprisingly used out of praise. Black Cocks when it isn't.
MSP - Magneto/Storm/Psylocke. A common configuration for aggressive players because Magneto and Storm's high-low games, in combination with Psylocke's assist, can make blocking pretty much useless.
Pink licorice - Dr. Doom's Photon Shot, particularly when done in midair
Doom Rocks - Dr. Doom's Molecular Shield when used as an anti-aerial Assist.
Team Clockw0rk - Sentinel/Strider Hiryu/Dr. Doom, named for the tournament player who popularized it.
Team Matrix - Storm/Sentinel/Cyclops - Cyclops is Neo, Storm is Trinity, and the Matrix universe also has killer robots named Sentinels.
Team Santhrax - Storm/Sentinel/Commando, named for the tournament player who popularized it.
Team Scrub - Sentinel/Cable/Captain Commando, a team noted for its ease of use. Also Cable/Cyclops/Ryu, but then again ANY team with Cable in it qualifies.
MAHVEL (BAYBEE) - The game itself, thanks to this video.
"Mango Sentinel" (a custom colored Sentinel), "Pringles" (Magneto's infinite combo) and "Scoops" (killing an assist character while the point is off-screen) also came from this video.
OCV - One Character Victory, defeating your opponent with only your first character.
Happy Birthday - Killing two (or, in rarer cases, all three) characters in a combo, thanks to the opponent calling out an assist and catching both characters. The person who loses their teammates is "gifting" you extra characters to KO.
Maximum Wesker - Alternate name for Wesker's "Phantom Dance" Hyper Combo due to its similarity to Spider-Man's "Maximum Spider" Hyper Combo.
Maximum Vergil - Vergil's Dimensions Slash looks a lot like the above.
Mel Gibson - Frank West, for his similar appearance to, well, Mel Gibson.
Hot Wheels - Ghost Rider's motorcycle super.
The Finger Lasers and The Human Blender - For Doctor Doom's Photon Array and Doom's Time respectively. You can thank Assist Me for these ones.
There are a couple of moves where characters will say something that isn't the actual name of the move, but fans call it that, anyway. Some examples include Wolverine's Berserker Rage ("Swiss cheese!") and Spencer's Bionic Lancer ("Bionic... ARRRRRRRM!!").
Metroidvania - For the post-Symphony of the Night installments in the series for their sprawling world map and wide open exploration. It has also become a nickname for an entire sub-genre of 2D action games offering similar mechanics (for better or worse)
Castlevania 64 - The first Nintendo 64 game, properly named Castlevania, starring Reinhardt and Carrie.
The Belmont Walk; the Pimp Walk - A peculiar stride that all of the members of the vampire hunter clan Belmont use. This most likely originated from the four frames of animation use for Simon's walk from the original game, but other 2D Belmonts used it too, leading to the nickname.
The Dark Miasma debuffing pet is often known as "Fluffy". Considering he/she is a blob of pure darkness that sucks the soul out of any nearby enemies, it would also make it.... Fluffy the Terrible.
Extracted Essence (A Warshade Power) and Unbound Nictus are also referred to as Fluffy.
Frankengun: The Assault Rifle powerset. Functions as a shotgun, a machine gun, a grenade launcher, a flamethrower...
Also because the original gun that everyone had to use for four years really looked the part. It was also called "the Supersoaker".
A variety of portmanteau names for builds that may not strictly hew to archetype, such as Scranker (Scrapper and Tanker), Blapper (Blaster and Scrapper), and the somewhat forced Scraptroller or Contrapper (Scrapper and Controller).
The electric blast Blaster powerset is often referred to as a Blaptroller set (Blaster, Scrapper, Controller).
Or Blastroller for any Blaster with a lot of stun/hold/immobilize powers.
The odd one out is the name for a Defender who focuses on blasting, the much-less unwieldy Offender.
Likewise, the rare Scrapper who uses ranged attacks (only feasible at high levels) may be called a Ranger.
The extremely rare Mastermind who ignores their pets in favor of direct attacks is a Blastermind.
The Bimbo, Bimbette, Hostage Lass: Fusionette, the hapless and apparently dippy NPC hero (based in the new Faultline) who is almost always found captured by villains she thought she could take on by herself, and in need of rescuing by the PC(s). (The only time she isn't in it up to her neck is when she is encountered as one of the guests at a formal reception.)
Part of the hate here stems from her introductory mission, where, like in many other parts of the game, you have to lead her as a hostage safely out of the mission. Unlike many other hostages, she aggros any mob she sees and has very few hit points or resistances. If she dies, it's mission failure, one of the few times in the entire game where it's a real possibility, especially if you're doing it for the first time and not aware of her suicidal tendencies.
At least she's a Glass Cannon and is actually useful in later missions (along with her boyfriend Faultine, or as we sometimes call him, Blockhead).
Layer Cake of Doom, Layer Cave of Doom: A terribly designed cave room that has five levels connected by ramps and holes in the floor.
Sexy Jay: Jay "JLove" Doherty, character artist and costume designer for the game. He insisted that if players wanted to suggest new costume options, they would first have to call him "sexy". Players complied en masse.
RikTF: The Lady Grey task force, which largely involves beating the snot out of a lot of Rikti.
Soon(TM): A long period of time, largely used to describe development cycles.
Poo: The Earth Control pet, after what it looks like and for exactly how useful it was.
Forum Cartel: A group whose membership comprises any long-standing poster on the official boards (more accurately anyone with over 10,000 posts), due to an odd instance of the Unpleasable Fanbase.
Freem Fifteen: The 15 devs left after the downsizing of Cryptic in 2005. Named after the most famous part of the "Visual Sounds" 2008 April Fool's joke.
Imperilous: Imperius, an NPC helper who doesn't really help much.
Floor Inspectors Union — self-depriciating term for blasters, who are the game's ultimate Glass Cannon class.
AssBot: The Assault Bot from the Robotics Mastermind powerset.
Ass Impaler: The Assassin's Impaler power from the Spines Stalker powerset.
... and several more in that vein.
Buzzsaw: A build type that emphasizes single-target DPS, putting out as much damage as quickly and consistently as possible.
More specifically, buzzsaw involves using quick-cycling attacks (that don't necessarily do much damage on their own) combined with lots of damage procs. Since these fast attacks gives a higher chance over time to trigger the procs you can get an impressive amount of damage out of a buzzsaw build.
Treespec: The villainside Character Respecification Trial, compared to the heroside "respec". Involves a big tree.
Freakspec, Riktispec: The second and third hero respecs, respectively, named after the primary enemies (Freakshow and Rikti). Unfortunately, "Sky Raiders" doesn't lend itself to a portmanteau nickname.
FCEN: Fire, Cold, Energy, Negative Energy. The "exotic" damage types (other than Psionic and Toxic), as opposed to the "common" ones of Smashing and Lethal. Used somewhat as an adjective: "I'm not fighting those critters, I don't have enough FCEN defense." "You really need more FCEN mitigation." "Aw, FCEN hell."
Deep Purple: Enemies which are a much higher level than the player, as the con colour system is purple for enemies four levels or higher than the player.
The con color system breaks down a bit at the highest levels. Purple is supposedly extremely difficult to insurmountable, but very powerful teams regularly spend their time slaughtering "light purple" monsters.
Positot, Statestot: The children of developers Matt "Positron" Miller and Jack "Statesman" Emmert respectively.
Poo(p) Pads: The Pain Pads costume option, after costume designer Jay mentioned that the inspiration for them occurred when staying at the office late "dropping the Browns off at the Super Bowl".
Defebcers: Condescending slang for poor Defender players, specifically those who haven't realised that healing is vastly inferior to buffing in this game, and consider doing nothing but having 'Healing Aura' on auto to be contributing to a team.
Similarly, a bad Mastermind player is a Disastermind.
Purple Triangles of Doom: The indicators for whether archvillains' resistance power is active. If it is, the Controller will have a hard time being useful.
Bobcat's new costume has prompted some people to add an extra "O" to her name.
Mother Mammaries...er, Mayhem got her own nickname after her "upgrade.
Maelstrom's mastery of Villain Exit Stage Left has caused many players on Virtue to start referring to him as "Smug Teleporting Bastard".
Flambimbeaux, Flambimbo for Flambeaux, an inept Attention Whore Superhero who eventually becomes a villain for attention, while coming up with silly plans to gain fame. Tends to say "I just wanted them to love me!" as she is defeated.
Goody huts - The nomadic settlements that can be found on the game map by exploring units. They will periodically give you extra gold, units, or cities, although sometimes you'll get a rampaging barbarian horde instead.
Infinite City Sprawl - The practice of building a gigantic number of tiny cities crammed as close to each other as possible. Useful because each city works the tile it's on for free, so you get more resources per population point.
Culture Bomb - In the fourth installation, great artists can create such a great work of art that instantly increases a city's culture value, often popping the city's radius of influence multiple times. Like a bomb. A culture bomb. The fifth installation dropped the pretense and has the same effect under the label Culture Bomb.
Tawna Bandicoot - Crash's girlfriend from the first game is simply known as "Tawna" and has no official last name. "Tawna Bandicoot" is mainly used by fan-communities to make it clear that they're talking about the Crash Bandicoot character and not someone else.
"Tiberian Dawn" - The first game in the series, given a subtitle referencing that of Command & Conquer: Tiberian Sun after it came out. So widespread among the C&C fandom that, like some theories on the Red Alert and Tiberium timeline, they tend to forget that it isn't and has never been official.
Quarter Ring of Death: A glitch in the Multiplayer mode where the match starts with a black screen with a quarter of a white circle in the middle of the screen. You have to restart your Wii, or wait for the match to end to get out of it.
Noodle Fairy - Mostly Japanese nickname for Kirigiri for a scene where The Stoic girl has a cup of noodles dumped on her head and she doesn't notice until it is pointed out. In fanart that shows characters "Super-Powered Evil Side" this is usually hers.
Dante May Cry, Dante Made Crappy, Disappoints Many Customers, Dick Move Capcom - The game itself, provided via acronyms from the Hatedom.
In the same vein, DmC is also called Tameem May Cry, as Dante has been redesigned to resemble Tameem Antoniades, Ninja Theory's chief designer. This is further twisted into Tameem Will Cry, as fans don't like his smug attitude regarding the changes made for the game, as well as what they perceive as him spitting on the history of the original Dante.
Providing further ammunition to those declaring In Name Only is the fact that this new "Dante" is half angel instead of half human... yeah.
Paddlebutt-tan - Raspberyl, whose tail looks suspiciously like a paddle.
Mid-Boss - Vyers. Invoked in game, but so prevalent outside of it that you probably don't even remember his real name.
In fact, you can usually tell who in the fandom is specifically a Vyers fan, by which name they call him by. Many of the ones who especially like him will throw him a bone by not calling him Mid-Boss. So, his Fan Nickname basically comes full circle.
Captain Gordon, Defender of Earth! doesn't have a nickname, but rather a constant mandate of bold font in honor of his epic hammyness
589 - Shorthand for the group of Bartz, Zidane,and Squall, a traveling group in the story mode of the game with more than its share of hilarity (and Ho Yay). The name is taken from the numbers of the original game each hails from, and is usually used as a descriptor on fanworks. Other numeral combinations may be used for other groups or pairings—for instance, 24710 referring to the traveling group of Firion, Cecil, Cloud, and Tidus—but seem to be less generally prominent.
The Pimp Hand - Golbez's fighting style incorporates Full-Contact Magic, usually in the form of him literally bitchslapping his foes before blasting them with all sorts of wicked spells. This has all contributed to his status as another one of Dissidia's Memetic Badasses.
Gingerbread Kong - The Atari 2600 version of DK has often been compared to a gingerbread cookie (or even The Gingerbread Man) because of his appearance in this version. Moreover, the "barrels" he throws have been referred to variously as cookies (or even chocolate chip cookies), Ritz crackers, Honeycomb cereal and even pizzas.
Simon Caves - The caves in DKC3 where you rescue Banana Birds, because you have to memorize light patterns arranged in the pattern of the face buttons on the controller, similarly to the classic electronic game Simon.
One party member will be a war dog, which players can name whatever they want. The forum community has affectionately named him Rabbit but since the Darkspawn Chronicles came out Barkspawn is also gaining popularity. Then again, Darkspawn Chronicles got the name from Penny Arcade...
Alternately called "cotton candy" or "clownite" (see below; the former is also a reference to its extremely low density).
HFS, Hidden Fun Stuff: demons from the bowels of the earth.
As of version .31, the Glowing Pit has become known as the Clown Car for their infinite quantity of demons, and thus its contents has been called clowns. Sprouting from this, the fandom likes to use circus-related metaphors to hide spoilers surrounding Hell. "Cotton Candy" (see above) for Adamantite and "Freak Show" for Forgotten Beasts.
Many traps also have their own names, such as the Degrinchinator (which essentially amounts to an insta-freeze ice gun).
Skelk: skeletal elks.
Goblinite: Goblin loot. Previous editions had goblins using weapons dorfs wouldn't, and armor too narrow for them, making the loot useless except that it could be melted back down into iron and made as REAL equipment. Iron-deficient areas often relied on "goblinite ore" for their iron.
Goblin Christmas: When a goblin siege walks through a trap-filled hallway of a fortress, leaving plenty of nice goblinite for all the good little dwarves. Goblins tend to invade in winter, and when they start the will do so every year like clockwork.
Cow Cow - Cao Cao, for having his name spelled as written regardless of how it's supposed to be pronounced in the early games.
Cow Pee, Bovine Urine - Cao Pi, for the same reason as his father.
Xiahou Bieber - Xiahou Ba, for his unfortunate resemblance to the singer.
Chinese Jesus - Zhang Jiao, for his look in a few games and probably for his sheer televangelist-like hamminess.
Yamadaaa! - A Japanese Fan Nickname for Zhang Liao. A Mondegreen of "Jamada!" (Out of my way!) which sounds like he's screaming someone's name. Naturally, there is crossover with another "Yamada" with a Nice Hat.
SSX - Sun Shang Xiang, an abbreviation of her name.
The Big White Blob - The nation of Austria, largely because its color on the political map is white and it has a tendency to eat the small German states to the north over the course of a game. In fact, when Europa Universalis III was released, there was a public fan outcry when Austria's color was changed to red; the Expansion Pack restored it to white, which put a lot of people's minds at ease.
This has become a more generalized term for any nation that, because the AI is too smart/too dumb, becomes a marauding all-consuming a-historical beast. Currently in EU III with all the expansion packs France tends to become the Big Blue Blob. Or, as someone described it on the Paradox forums, "France is the end boss of EU III."
Disco-x - A ship setup with all smartbombs, named for the light-show produced by setting off a full set of smartbombs. Popular variants include the Discophoon and Discogeddon.
Nano-x - A ship setup for maximum speed and agility, often using lots of Nanofiber Internal Structure mods.
Fagabond - The Vagabond, a Minmatar Assault Cruiser with far too much speed and maneuverability for its own good, especially in a nano setup as described above.
'geddon, 'phoon, 'thron, etc. etc. - Armageddon, Typhoon, Megathron... the list goes on and on.
Mushroom - The Amarrian Titan, the Avatar. So named for its odd appearance.
Also known by several variants of "space dick", due to CCP's statement that "The Avatar was never meant to be cost effective, it's a giant dick!" at a fan convention.
Calamari - A character that specializes in both Caldari and Amarrian skills and ships.
Carebear - Any player that focuses on non-pvp careers, especially mining.
Space Whale/Space Potato - The Dominix battleship.
Weekend Warrior, Yarrbear - A player whose main career is industrial or PvE, but does Pv P on the weekends. Also called "piwates" for not having the guts to be full-time pirates.
Hero Tank - A ship that just WILL. NOT. DIE. Most famously used in the 2008 Alliance Tournament, where a few ships showed the ability to take a beating from every enemy ship at once and still live. At least until their cap ran out.
Dick Star: a Space Station that is designed for the purpose of taking a really, really long time to destroy. They usually have no guns, just shields and armour, and so much of them that they can usually defeat the enemy by making them so bored that they just give up.
Failguns - Originally a derisive nickname for all sizes of railguns, which were badly ineffective compared to other weaponry; subsequent tweaks and buffs allowed the small (frigate-size) and large (battleship-size) railguns to shed the name, but medium (cruiser/battlecruiser-size) railguns didn't benefit to nearly the same degree, and thus remain "medium failguns".
Doutei - Originally a Japanese fan nickname for Firion, a triumphant aversion of A Man Is Not a Virgin—indeed, "doutei" literally translates to "virgin." (It also rhymes with "koutei," the title of that game's Big Bad). Recently, some corners of English fandom have begun using "doutei" or similar to refer to Firion—and even in those parts that don't use it, the sentiment remains.
Fish Mountain: Nickname for the fish-shaped mountain encountered while approaching Salamand.
Monk Anderson, Brown, and Coleman - The three generic Monks that join Yang in his tale, with the notion that the letter in their names is in fact their surname (e.g. Monk A as Monk Anderson). Monk Coleman is jokingly treated as a Memetic Badass within the fandon.
Guard Ashley, Bruce, and Campbell - The three generic Guards that join Edward in his tale, for the same reason. Also a Shout-Out to the Evil Dead series.
The Complication - The Compilation Of Final Fantasy VII. Usually used derogatorily by the fans who lump the sequels and prequels into the Fanon Dis Continuity bin, but can be used as an affectionate tease by Compilation fans who aren't too Fan Dumb to accept that Final Fantasy VII canon has more than a few plot holes.
Cloudo and Cloudster seem to have sprung up lately. Usually said in fanfics by Yuffie or Sora
The Mommy Box - The black box with JENOVAH's... er... slime in it.
Moogle Girl / Moogle Kid - The unnamed girl with the moogle doll in Advent Children
SHM (Silver-Haired Men) to refer to Kadaj, Loz and Yazoo.
Vinny for Vincent. Cid calls him "Vince" a couple times in Dirge of Cerberus, though.
Aerith Gainthborough, called this by fans who disapprove of the retcon to her name's spelling and pronunciation, which to some, sounds like lisping.
Heidegger and Scarlet are referred to as "Gya-ha-ha," and "Kya-ha-ha," respectively, due to their distinctive laughs. However, Cait Sith was the first to call them that, although he only did so once.
Yuffie is renamed by enough players simply as "Bitch" to warrant its mention here, due to her extremely annoying Sidequest where she steals all the party's materia. Though she is an optional character, she is oftentimes recruited simply because there is no other way to get into her hometown of Wutai, where a lot of useful items can be found.
Genfat, Gaybu, Genboob - Genbu, one of the easiest endgame bosses ever (so much so that a few jobs can solo it).
Fafhogg - A name shared by the monsters that spawn in one endgame area.
Dienamis - Dynamis, where it's very common for a wipe to occur.
Garbage Shitadel - Garlaige Citadel, a dungeon that somehow manages to be a popular leveling spot despite the fact that enemy spawns are far too close together, which often causes parties to to be attacked by multiple enemies.
Manthra - A male player who plays as a Mithra, the(almost) all-female catgirl race.
Sky - Tu'lia, an endgame area that looks like a flying castle.
Sea - The Lumoria region, an endgame area that contains monsters that look similar to Jellyfish and Manta Rays.
Blank's Aery - Any overcrowded camp by replacing the word "Blank" with whatever is being camped (Colibri's aery, Ullikummi's aery, etc.). Named after Dragon's Aery, which is famous for being overcrowded due to the Dragon that spawns there dropping the Ridill, a sword usable by six jobs that has a frequently occurring chance of additional attacks in a given attack round. And it is the source much Loot Drama — to the extent that other powerful, contested low-drop items may be called Ridills.
Laggate - Aht Urhgan Whitegate, the central "hangout zone" for players, so called because it's common to see several hundred players there during prime time, leading to lots of, well, lag.
Crotch Hearts - When The Beastmaster class uses Charm on a monster, they launch a heart... from their crotch. I suppose that's ONE way of taming an animal...
Buttersheep - Warrior with White Mage subjob. Refers to a hypothetical situation where a mad sheep can choose a subjob, and has the choices of Shark, Elephant, or Butterfly. Despite the other job's advantages, he chooses butterfly.
To further elaborate - many newbies assume that having Warrior as a main job to kill monsters, and White Mage subjob to heal themselves, would make them invincible. It doesn't.
Ghetto Paladin - another name for Warrior/White Mage, which takes the point of view that said combo is attempting to be a cheap substitute for a paladin.
Noob Dunes - alternate name for Valkurm Dunes. Valkurm Dunes is a region populated by monsters between level 15 and level 30, which is about the point where you can't solo effectively anymore and have to join a party. Cue horrible Total Party Kill because a newbie player, unused to party play, screws something up epically. Alternate names: The Dunes, Noobland, Hell.
MGS - a character, especially a White Mage, sneaking around a dungeon populated by monsters many levels higher than he is, and that can probably one-hit kill him, using sneaking and invisibility spells.
WHM Airlines - White Mage Airlines, from the White Mage teleporting spells. Many White Mages work as teleporters in order to round up a bit their gil income, some even setting up macros with airplane-like announcements like "We thank you for choosing White Mage Airlines, please fasten your seatbelts and keep your arms and legs inside the teleporting field at all times..."
Rat, Glowing Rat, Radioactive Rat, Pikachu, Carbychu, Carby - Carbuncle, the first Summon a Summoner gains.
Blink Tank - A Ninja (normally a quite fragile job) tanking via high Dodge combined with Utsusemi.
Pimp Hat - The Warlock's Chapeau, the Artifact hat for Red Mages.
Vaan from Final Fantasy XII has quite a few relating to the fact that Dude Looks Like a Lady, being a standout example of the pretty boy protagonists that the Final Fantasy games have had. Most simply point out his physical resemblance to either Meg Ryan, Ellen Degeneres, or Gackt.
Uncle Marcus - Marcus, the Crutch Character from Blazing Sword (the first Game Boy Advance one in America), for some players' tendency to use him to mop up bosses and rescue severely injured characters.
Eliwood of the same game has earned some derogatory nicknames thanks to his personality and perceived stat issues; Eliwuss and Pansywood are the most commonly used. Less commonly, Smellywood.
On the other hand, we have Eliw00t. In a similar vein, Hector and Oswin get called Haxtor and Osw1n because they're pretty badass.
Lightning Rod of Hate - Shinon in Radiant Dawn, who comes with the skill "Provoke," meaning enemy units are more likely to attack him. Comes from the running gag of the same name from Whose Line Is It Anyway?.
Gorillaguz - Radiant Dawn Ike (In Japan), a portmanteau of "Gorilla" (Since he got really buff since the previous game) and "Laguz" (The Petting Zoo People of his games).
Irishim - The Iridescent primary/Shimmer secondary gene combination, one of if not the most popular combos on the site. There are other nicknames for pairing irishim with specific tertiary genes (irishimsmoke = Smoke tertiary, irishimcircuit = Circuit tertiary, irishimcrack = Crackle tertiary, irishimbelly = Underbelly tertiary, irishimgem = Gembond tertiary). Iri and shim can also be used separately, but it's less common simply because those genes are much more often seen together than on their own.
Speckfreck - The Speckle primary/Freckle secondary gene combination. Much less popular than irishim, but still has its fans.
Eyeburners/eyebleeders - Dragons with ridiculously bright clashing colors and genes.
Imps - Imperial dragons.
Snip-snaps - Snapper dragons.
Noodles - Spiral dragons, whose length makes them look like noodles with wings. Less commonly refers to not-quite-as-noodly-but-still-pretty-noodly Imperial dragons as well. Spiral hatchlings are "baby noodles".
Each of the elemental deities has at least one affectionate nickname which the members of their respective Flights (factions) use to refer to them:
Glittermom - The Lightbringer
Shadowmomma, Droolmomma - The Shadowbinder. "Droolmomma" refers how her official art shows her melting into the floor with her head on the ground, making her look like she's drooling.
Space Dad - The Arcanist
The Boss - The Stormcatcher, thanks partly to the fact that his official catchphrase is "GET BACK TO WORK!"
Tideloaf, Lord of Blue Gatorade, Papa Pool Noodle - The Tidelord, whose design is based off of Imperial dragons.
Mather, Flame Mom - The Flamecaller
Lord Fluffylegs, Ice Papa - The Icewarden, who does, in fact, have fluffy legs.
Plaguemother (formal...ish), Plaguemomma (casual) - The Plaguebringer
Lucy, Collie, Sath - the SD Lucifer, GTVA Colossus, and SJ Sathanas, respectively. The last is particularly popular due to its plural "Saths", since no one can agree on what the plural of "Sathanas" isnote a great deal of arguing eventually resulted in the consensus that it was "Sathanes", "Sathanai", or "Sathanases", depending on what language's grammar rules you were using.
Flying Potato - the GTF Ares, due to its brownish color scheme and its severe lack of maneuverability
Fish-wuvvers - Vasudans. Named for an Easter Egg in the second game.
Zods - The Vasudans again, due to Zodiac constellations being used for their wing names in the first game. Used by mod authors as a Fantastic Slur wielded by racist Terrans.
Battle of Endor Syndrome (BOE syndrome) - War Sequence missions. Generally frowned upon among modders due the difficulty in making them both balanced and enjoyable, as well as the resource requirements for having so many ships active at once. The few good BOE missions tend to be really good, though.
:V: or [V] - Volition, the game's developers. The forums even have a custom smiley resembling Volition's logo which is often used to represent them.
Shivantown - the Shivan homeworld. Also what the developers themselves called it.