Master Chief 

A 7'1" tall genetically alterred soldier in the video game called Halo, who fights off aliens, and masturbates to a hott computer AI called Cortana who wishes she was a real person so she could ride his cock, while master chief wants to have little computer babies with her.

im tha master chief bitch! ride my cock you filthy computer whore! lawl!

Master Chief by blahhomies September 10, 2006

Master Chief 

A man in his mid-late 40's who spends most of his spare time at the beach. Often seen wearing an army cap, aviators and short swimming shorts.

Usually in pretty good physical condition, he is fully aware of this and likes to show it off. The Master Chief will do this by spending the majority of the day standing up with his arms folded, casually observing everything that goes on around him as if he's the master of all he surveys.

It is for this reason that some have also come to describe the Master Chief as the Master of the Beach.

The Master Chief may or may not be married. In cases where Master Chief is married, his wife will often sit on the beach for the majority of the day with the couples offspring and not communicate with her husband unless he speaks to her first.

In cases where Master Chief is not married he will move from spot to spot on the beach and quietly observe. It is this behaviour which highlights the difference between the un-married Master Chief and the Archetypal Old Mate, as the Old Mate will move from spot to spot on the beach and actively seek to engage others in (often unwanted) communication.

The first Master Chiefs were originally found in France in the latter part of the 20th Century but since then have spread to every continent in the world.

Master Chief casually observed the antics of the other sun lovers on the beach in a calm and calculcated manner

Master Chief by cheremiah September 5, 2010

Master chief 

the man who gave Hitler the idea to start his own genocide

Hitler-"I see that Master chief can kill an entire race, I bet I can to and get away with it! its brilliant!"

Master chief by Th3on3andonlylov3r April 11, 2011

Master Chief 

The name given to someone whom of which is an absolute fucking brute, by only using 0.00000000001% of there power can wipe the entire universe with one strike.

Master chief:

Cortana, I don't need a weapon...

Master Chief by Fhatnut December 19, 2021

master chief 

a boy portraying the character off of the halo trilogy. this boy portrays master chief only when he is in the act of the giant circle.

"Master chief what is taking so long?!?!?!"
"I'm loading my plasma grenade if you know what i mean."
"Ooooh you a kinky bitch master chief"
"SHUT UP BUTT PIRATE, MASTER CHEIF IS MINE!!!"

master chief by Banana Hamikk May 11, 2008

master chief 

a faggot guy wearing a green costume. Everything is fake and all u losers out there obsesed with the game just face it, hes a faggot! he has a girlfriend who isnt even real, named cortana, who lives in his head! He's a fag.

Hey did u just see the pictures of the Master chief i took with him having sex with cortana?!?!?!?!

master chief by walmer November 25, 2006

master chief 

some kick-ass soldier of an awsome game which is awsome and yeah ummm... i like penguins! and he is a kick-asser of super assers in the fucked up galaxy we like in! Masterchief rox but his lesbo pal named cortona is well a lesbo and sucks other lesbos boobs.

master chief what a sexy beast of a soldier!

master chief by walmer April 18, 2005