A Kick-Ass marine from the future. He's so bad-ass that he killed whole fucking race of aliens and then went home to nail his artifical bitch. He's so bad-ass that when he takes off his Helmet it's Chuck Norris. Nuf Said.
"Master Chief'll fuck a nigga up"

by Duh Boi February 19, 2009
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A mixed drink modeled specifically for gamers, namely those who play Halo and Halo 2. Made by combining Bacardi 151 and Mountain Dew. Great for late-night Halo 2 Live sessions. Also great for vomiting.
"Man, I keep getting my ass handed to me by some n00b, I had better have another Master Chief."
by Mr. Beef September 15, 2005
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John, or Master Chief Petty Officer 3rd Class. (Spartan-117) is the main protagonist of the popular video game, Halo. he has many augmentations including, hight damage reduction, sight, and speed.
the master chief is one of the best video game characters of all time
by Chris000 July 17, 2006
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The only person more badass than Spiderman, Superman, David Hasselhoff, Megatron, Optimus Prime, Batman, Goku, 50 cent, and Ryu COMBINED.

And contrary to popular belief, he is also a mac-daddy pimp.
Master Chief-"I'm the shit"

Every1 in world-"we know!"

by Cy_Kill October 22, 2007
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when a chick is sucking you off and you are about to finish you back up and run at her while jacking off and melee her w/ said cock and you shoot your load all over her for dramatic effect. Warning may only work on drunk girls, also spraining of the cock may occur when melee'ing bitches. have fun!!!
Sally is giving an awesome Blow J but you think she needs to be taken down a peg or two, so when you think your done you pull out run at her and while shooting said load onto face you melee her as hard as you can possibly trying to cum in mouth as well. master chief
by Jaron Huff December 11, 2007
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1. The main character of the first 3 halo games (Halo 1, Halo 2, and Halo 3, respectively). He is an advenced supersoldier, comonly reffered to as a Spartan. Chief's full name is Master Chief Petty Officer John-117.

2. Commonly reffered to as Mastur Ch33f, Master Chief is the parter of The Arbiter (or as Ch33f says, Arbitur). All that is known of him is that He r guy hoo gun t33ch u l3ss0n.
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Master Chief wants YOU to enlist in the UNSC!
by Ecksbawks September 18, 2009
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