League of Legends Meme/Term Dictionary

As online games go, League of Legends certainly has its hands full of terminology and dank memes (see below). Even I have trouble keeping up sometimes, so that's why this page is being created as an ongoing list of updates to both League terminology as well as memes in general. If you see one I haven't added yet, feel free to comment and I'll drop it in.

Let's jump right in!

Introduction

As online games go, League of Legends certainly has its hands full of terminology and dank memes (see below). Even I have trouble keeping up sometimes, so that's why this page is being created as an ongoing list of updates to both League terminology as well as memes in general. If you see one I haven't added yet, feel free to comment and I'll drop it in. 

Let's jump right in!

Updates:

• 4/28/16: 
• Added "Body" + "OTP"

Memes

1v1 me bro: Refers to a challenge given to players when they're salty about losing to enemy ganks and think they would win one-on-one

Ate an orange and it was k: Referring to Gangplank's Remove Scurvy ability where he eats an orange and escapes every crowd control effect
Auto-spacing: After losing in a game, Doublelift blamed it on "auto-spacing". Although some players agreed it could be a real thing, this meme became known for representing a random complicated sounding phrase used as an excuse.
best [insert noun here] NA: Used to express messing up terribly, not necessarily derogatory

Better Nerf Irelia: After a random nerf to Irelia for no particular reason long ago, this became a popular meme used in relation to things that need fixing but have no relation to Irelia.
Calculated: Refers to when someone achieves something with a narrow margin, after which they casually say they knew it all along that it would work

Challenjour: Refers to a player that thinks they are good enough to be in Challenger league, but are not really

Dank Meme: An ironic expression used to mock viral jokes that have exhausted their comedic value.

Doge: Referring to Nasus

Empire: Refers to a fully channeled Nunu ult in a bush combined with a Karthus ultimate
fam: Short for "family" and intended to show friendliness

feelsbadman: Used when something said or done makes you feel bad

Huehuehue: Originally used by Brazilian Portuguese players, not used as mocking laughter.
I'm [champion], I'm helping :): Refers to a champion that tries to help but ends up messing their team up (see GIF on this page)

Insec: Refers to knocking an enemy player back into your team by getting behind them, not to be confused with Blitzcrank or Gragas. More like Azir, Lee Sin, or Jayce.
Kappa: Used to convey sarcasm at the end of a sentence

Lag: Used whenever a mistake is made, regardless of whether it was due to network latency or not
Lucker Dog: Originally coined by Saintvicious, meant as  variation on "lucker" (Origin Story)

Madlife (Hook): Refers to predicting where an enemy is going to flash to and preemptively throwing a slow skillshot in that direction

Ok: Users imitate the champion Rammus, who only says "Ok"

Real?: Shortened version of "Really" generally used to express displeasure at an action.

Report 9x: Refers to every single player other than the accused being reported

Sandbox Mode: Riot released a statement on why they didn't want to release a sandbox mode, citing it would "encourage players to get better". Used in relation to anything considered never going to happen.

Salt/Salty: Refers to someone who is upset at events in the game, indicates the presence of salt from tears

Satan: Another name for Teemo

Spin to Win: Refers to Garen or Katarina killing champions by spinning
Sucker Dog: See "Lucker Dog" for origin story, this phrase is more of a simple derogatory term

Rito Pls: An intentional misspelling of "Riot Please", generally used when a gamebreaking bug or perceived unfair champion causes a loss

Wombo Combo: When teammates effectively chain together moves against enemy champions

Worth: Used whenever someone dies in the process of achieving something, whether or not it was really worth it.

Vayne-Spotting: When players do things that indicates they are stereotypical Vayne mains, generally things that are negative
xPeke: To teleport into the enemy base and backdoor with no creeps typically with enemy champions rushing back to stop you to no avail

In Game Terminology

1v1: Represents one player playing against one other player without outside interference

3s: Represents games played on the Twisted Treeline
4v5: A usually salty remark saying that one player on the team is useless

5s: Represents games on Summoner's Rift, generally with a premade team of five people

AA: Auto Attack, meaning to right click on an enemy unit and have your controlled champion attack

Ace: When the entire team is dead at the same time, or as a verb to kill all five enemy champions before any respawn

AD: Attack damage, representing increasing strength to auto-attacks

ADC: Represents the person that farms bottom in a duo lane, generally a glass cannon.
AFK: Away from Keyboard
AFK Farming: Where a person farms and ignores all other objectives occurring as if they're not in the game.

Aggro: Represents targeting priority of in-game artificial intelligence units

AOE: Represents damaging abilities that cover a specific area, generally able to fit more than one champion

AP: Ability Power
APC: AP based carry

ARAM: All Random all mid, a specific game mode

Arpen: Armor penetration

Assassin: Someone who is meant to sneak past the front line and take out squishy back line champions

ASPD or AS: Attack speed

Aura: A passive that applies to a variety of heroes in a given range

B: pressing B to recall back to base, or to back off from an area
BB: Baby
Babysitting: When someone (usually the jungler) continuously ganks a single lane with high frequency

Backdoor (BD): To kill enemy structures without your own creeps there. Can also be used when a champion uses a high map mobility move to an already pushing minion wave while the enemy team is seiging.
Baron: Baron Nashor

Base: The area where your Nexus, inhibitors, and shops are located on the map
Bench the Kench: Means to ban Tahm Kench
BF: BF sword

Bird: Anivia, sometimes Azir
Birds: Raptor Camp

bg: Bad game

Blue: Refers to the blue sentinel, which will provide whoever kills it with a buff that is a blue circle
Blue Smite: Refers to smite while holding stalker's blade
BM: Bad-Mannered
Body: To "Body" someone means to dominate them. Ex: "Let's body these fools"

Boosted: Someone else won games on behalf of another player, who should not be at their current division

BoTRK: Blade of the Ruined King

Bot Game: A game played against AI champions

BRB: Be right back
BT: Bloodthirster

Buff: To make something stronger. Can refer to specific bonuses in game, acquired as a result of killing neutral monsters: for example the Red Brambleback (red buff), Blue Sentinel (blue buff), Dragon and Baron buffs on Summoner's Rift. "Buffs" without more means red buff and blue buff. "Double Buffs" is having both of those buffs on a champion at the same time.

Burst: Ability to deal large amounts of damage in short time frames

Carry: The ability to be responsible for a team's victory

CC: Crowd Control, which limits the ability of an enemy champion to move, attack, or cast spells

CDR: Cooldown reduction
Chain CC: Using various hard crowd control abilities in succession so that a champion is CC'd for the entire duration
Cheese: To do something unusual that generally never works, but when it works is very effective. Examples include unusual picks or hiding in a bush for extended lengths of time.
Chickens/Wraiths: Raptor camp

Clutch: The ability to make good plays under pressure

Countergank: Engaging as an immediate response to an enemy attacking an ally

Counter Jungle: Jungling on the enemy team's side of the jungle

Cover: To hold an ally's lane while they're not there

CS: Creep score, which is the number of neutral or enemy minions you've last hit

DC: Disconnected from the game
DFT: Deathfire Touch

Dive: To attack behind an enemy turret
DMP: Deadman's Plate

Dog: Nasus

DPS: Damage per second

DoT: Damage over time
Drake: Dragon objective
Duo: Refers to two players that queued up together

Egg: Refers to Anivia's passive

Elo: An old version of the ranked ladder system

Elo Hell: Being stuck in a division as a result of external factors outside your control (more here)

Elojob: When a high division player boosts a low division player's account to a higher division
Emperor: Azir
EZ: Easy
Ez: Ezreal

Face check: A champion walking into a bush to see if someone is in there

Farm: Last hitting minions for gold

FB: First blood, being the first person to die in a game

Fed: Someone who has gained a lot of gold off killing enemy players

Feed: Dying and giving gold to the enemy team

FF: Forfeit
FoN: Force of Nature (item removed)

FoTM: Flavor of the month, what is popular at a given time
FQC: Frost Queen's Claim
Freelo: Refers to when you think a game is so easy that it's a free win

Freeze: To kill minions very slowly so that the place where your own minions and enemy minions are fighting does not change
Frozen Fist: Iceborn Gauntlet

Gank: To attack an enemy lane as someone who has not been in that lane for the majority of the time

Gap Closer: An ability that allows a champion faster than usual movement 

Ghosting: Someone who is watching an enemy's stream and able to see their actions that are normally hidden

gg: Good Game, generally used for when the game is over or perceived to be over. Can also be used as friendly praise after getting outplayed.

gj: Good job

gl hf: Good luck, have fun
Going Ham: Stands for going hard as a motherf*cker, as in fully committing to a kill or objective as much as possible
Golems: Old name for Krugs

GP10: Passive gold generating items
Grasp: Grasp of the Undying

Harass: To hit the enemy champion a little for pressure, but without the intent to kill

Hard CC: CC that disrupts channeling spells

Hard Leash: Doing enough damage to the first jungle camp that the jungler doesn't have to use smite to prevent dying.
HoG: Heart of Gold (item removed)
Honor: Refers to the ability to give players honor in the post-game lobby
Hypercarry: Refers to a champion that has a weak early game but scales extremely well into the late game if they get enough farm.

IE: Infinity Edge

Inc: Incoming
Inhib: Short for Inhibitor, the structure minions spawn out of

Inner: Refers to inner turrets

Instalock: Refers to when players pick a champion and instantly lock without waiting for feedback from teammates
Instagib: Instantly one shot a champion

Invade: To go into the enemy jungle

J4: Jarvan IV
JG: Jungle
Juggling Aggro: To switch AI targets between players to prevent one from taking too much damage
Jukes: Dodging skillshots

Jungle: Represents a player who generally only farms neutral camps for gold and is responsible for ganking lanes.

K6: Kha'Zix
Kass/Kas: Kassadin
Kat: Katarina
KDA: Kills/Deaths/Assist, generally (Kills + Assists) / Deaths
Kill Lane: Refers to a two person lane whose main objective is to kill the enemy laners

Kite: To hit enemy champions while moving and backing away between animations to prevent damage being taken.

KS: Kill steal, to take someone else's kill without doing much damage to it by being the last person to hit it

Lag: Refers to slow responses from the network due to latency issues, also a meme (see above)

Lag Spike: Refers to a sudden increase in latency

Laner: Players that follow the path that minions take and stay there during the early game

Last Hit: To hit something once so that your hit instantly drops their HP to 0
LB: Leblanc

Leash: To help damage the jungler's first camp so it dies faster

Leaver: A person who leaves a game before it finishes
LS: Lee Sin

LW: Last Whisper

Main: A person's most played champion

Man Drop: Pantheon's ultimate

Map Control: Having control over the map, generally due to warding
Maw: Maw of Malmortious
MB: "My bad"
Melee (Insert Ranged Champion Here): Refers to a ranged champion, generally a marksman, that isn't using their range properly
MF: Miss Fortune

mia: Missing in action, refers to when an enemy champion isn't visible on the map

Mid: Represents a solo player in mid lane

Metagame: The game's current playstyle based on strategy and champion selection
MMR: Match Making Rating, a hidden number based on your win/loss against other players and their MMR

Mpen: Magic Penetration
MR: Magic Resist

MS: Move speed

Newb(ie):  A new player

Nerf: To make something weaker

Noob: An unskilled player

Normals: Refers to a game that does not impact your recorded division

Nuke: A single ability that deals a large amount of damage

OMW: On my way

One shot: To kill an enemy champion from 100 to 0 in a single spell or spell rotation
OP: Overpowered
OTP: "One-Trick-Pony" A player who can only play one champion (well)

Overextending: Playing far enough to place your champion in danger of dying

PBE: Public Beta Environment, a place that Riot uses to test out new changes before going to the live server

Peel: The ability to keep champions from killing other champions, generally with crowd control

Penta: Killing five enemies within a short amount of time and getting the last hit on all of them
Permastun: When champions use CCs in a way that prevents enemies from moving for an extended period of time
Pick: Pickaxe

Poke: Long range damage that isn't meant to kill, but with the anticipation of following up for kills
Poopy: Another name for Poppy

Pot: Referring to a variety of consumables from the shop
Premade: A set of players who join a game together
Proc/proccing: When the game processes or applies a spell's effects tick by tick, or when an attack hits, the application of any bonus on-hit effects.

Proxy: To farm enemy minions between enemy turrets without destroying either turret first

Push: To clear minions rapidly so that your minion wave moves forward faster

QSS: Quicksilver sash

Rage: To display frustration in game

Ragequit: To be come frustrated and leave the game as a result of it

Ranked: Refers to the ladder where players are assigned a division based on skill
Red Smite: Refers to smite while holding Skirmisher's Sabre
rekt: Wrecked, indicating that someone just got killed in an embarrassing manner

Riot: The company responsible for developing the game
RIP: Rest in Peace
Rot: Zz'Rot Portal

Salty: Refers to someone who is upset
Scuttle or Crab: Scuttle Crab

Skillshot: Refers to a spell that can miss its target (see guide on how to hit more skillshots)

Smurf: A player who is playing on an account that is far below their true skill level

Snipe: Refers to shooting an enemy from very long range

Snowball: Situation where a team gains and advantage and uses it to gain more advantages

Split Push: Where one or more people advance continuously in one lane and the rest of their team advances in a different lane

SS: Summoner spell or also used the same as MIA in certain countries, also used the same as a champion's R move. Also used as sightstone.
Submarine: When Shen ults onto an invisible champion and they dive the enemy backline (like Rengar or Evelynn)
Sup: Support

Support: Represents someone who goes bot lane with another player, but generally kills no creeps when the other person is in lane.
Susan: Nasus backwards
Sustain: The ability to stay in lane via heals and lifesteal

Tank: A champion designed to take large amounts of damage

Team Comp: Team Composition

Teamfight: To fight with the majority of the players in the game in a single battle
Tear: Tear of the Goddess
TF: Twisted Fate/Trinity Force

Throw: To lose an advantage for an easily avoidable reason
Thunderlord's: Thunderlord's Decree mastery

Tilt: To play different from usual as a result of losing (See: Top 10 ways to tell you're on tilt)
Toad: Another name for Gromp

Top: Represents a solo player in top lane

Tower Hug: To stay close enough to the turret so that enemies approaching are in range of its damage

Toxic: Players with attitudes that negatively influences the game for his teammates

TP: Teleport
Troll Pole: Refers to Fizz's playful trickster
Trolling: Intentionally making the game difficult for your team
TS/TS3: Teamspeak 3, a voice communication program

Turret: Stationary AI structures that deal damage 

Ulti(mate): Generally refers to the ability on a champion's R key
Urgod: Refers to a good Urgot player

Ward: Items that grant vision in a small location

Ward jump: A move where certain champions are able to use gap closing abilities to jump to a ward

Wombo Combo: When effectively teammates chain together abilities on enemy champions

WP: Well played

WW: Warwick

Yas: Yasuo

Zil: Zilean
Zoning: Tactics that prevent enemy champions from getting close to an objective, generally minions to farm

Is there one I missed or you think should be added to the list? Comment below!