Top Definition
MLG stands for major league gaming. This is pretty cool. An MLG Pro, however, is someone who blows off playing Xbox Live with their real friends to play with other MLG Pros, who are all in the MLG, but they have no idea who they are in real life. They also take games way to seriously, and sap the fun out of playing with them. According to MLG Pros, "video games are not for fun. They are serious business". One way to counter an MLG Pro is to simply leave the game, or do stupid things to screw it up.
When I was playing Gears Of War 2 with my friend, who is an MLG Pro, he got mad when I said I had to go eat dinner and that I might do something else or play a different game afterwards. Then, when I decided to play with him again, he said no because he was playing with his other MLG Pro "friends".
by Shaolin Masta February 11, 2009
People who can survive 420BLAZEIT with their Eyeballs And ears still attached and Going on Up, to the End.
What an MLG Pro!
OMG have you seen this MLG Pro!?!?
by Hector Fisher February 24, 2015
Usually a gamer who plays first person shooters on either playstation or xbox. Most MLG-Pros are not actually Major League Gaming Pros, just little children or teenagers that can get a positive KD (kill to death ratio) and think they are cool and boast to everyone about it.

These MLG-Pros also don't have much to do with their lives but play call of duty or Halo and occasionally get a online girlfriend that they will never meet because they are too young to travel by themselves to meet them.

Also MLG is for halo so everyone on call of duty who is an MLG-Pro is obviously stupid!
The 10 year old child thought he was a MLG-Pro because he got a positive KD against bots on call of duty black ops 2
by FunnyLlamaDonkey April 17, 2015
Also simply called "Major League Gamer". A term often used in a derogatory way to describe people who plays too much videogames and make a big deal out of it, as well as fussing about any new action game with "eye-candy" graphics on the market.
- Damn! Have you ever seen Steve doing anything else apart from playing 'Kill-a-lot Killing Killer' games? No wonder he beats everybody at it, and no wonder he can't stop talking about the new game of the series, even if he never played it.

- And yet he thinks he's so cool for all of that! What a MLG Pro...
by RalfMick December 27, 2015
a Major league gamer. A MLG is a variation of a n00b, this species of n00b is very aggressive and is very unskilled. they have low self confidence and think that signing up on a website makes them a gaming god.

1- the subspecies of MLG

A. the squeaker- the kid who thinks he is pro and makes retarded noises .

B.the rage quitter- a MLG who is a sore loser and quits because he has the lowest score

C. Dr. Hax- the MLG who thinks he is so good that if he dies it most be hacks

D. the Captain- the dude that fails to much on his own and blames his teamates

E. the weapon-hugger- a MLG who thinks power weapon Kills are legit and will team kill to get it

MLG consist of spoiled kids, and lonely men that masturbate in there mother's basement. The only way to destroy a MLG is to use A ownage beam which happens constantly with MLG pros
XxProxX- hey noob give me the sniper rifle *team kill*

me- What the fuck you MLG pro prick

XxProxX- *tries to kill a guy, then dies* aahhh you use Hax you faggot

i took the sniper and got 5 kills he, he still team kills me and now has a score of -2
by who are you computer? October 24, 2010
Defining one's status or level at a game. MLG stands for Major Leauge Gaming, so it is a compliment. It is saying the person is really good at the game, or had a really cool moment.
Man 1: Did you see me get that kill?

Man 2: Yeah dude your so MLG pro

Dave: I totally own at this game!

John: You are so MLG pro!
by PalindromemordnilaP April 21, 2009
A phrase constantly used in Minecraft YouTube parodies, where the creator is trying to sound cool but is actually ridiculously nerdy and pathetic.
*random emo music* like an MLG Pro ooooooh yeah!
by Adlephix April 14, 2014
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