Playing Halo, getting a blowjob, while smoking a blunt.
Dude, last night my girlfriend surprised me with a Master Chief.
by M3TALxSLUG August 23, 2012
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Cheech: Hey man, you should light that subpoena up, dude.
Chong: No man, I'm gonna use it as a Master Chief.
by Urbanium January 19, 2010
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1. A rank in the Navy

2. The protagonist of most of the Halo series, with that rank.
by yeltsA kciR June 2, 2021
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The biggest badass of all time. He could kick anyone's ass no matter where he goes and he fucks. Greatest badass of ANY video game or video game franchise.
by PencilsRWeed April 24, 2020
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If you'll excuse me, I think I need to go run Mater Chief through some drills.
by fakemonster July 28, 2005
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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!
by blahhomies September 10, 2006
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