An often overused antic in modern culture where one man (or small group) face incredibly overwhelming odds and win. Generally only met with "dude" and "sick" from bro's and frat boys, and met with chargin from people with brains.

"Dude Master Chief just jumped out of a space ship and blew up that other ship. Then he single handedly killed 4.5 million aliens with his bare hands... sick."

"That end fight in Saving Private Ryan was such an obvious case of Master Chief Syndrome I'm suprised anyone can keep a straight face."

Master Chief Syndrome by Jackel_623 February 1, 2010

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Navy SEAL master chief

the most badass mother fucker on the earth. capable of killing an entire army of terrorist assholes just with his thoughts of how he would kill them.

: Did you hear about that Navy SEAL master chief?

: No, what happened?

: Al Qaeda died for him because he needed a holiday.

Navy SEAL master chief by evmiloqui May 14, 2011

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Master Chief

A bad-ass soldier from the video game "Halo: Combat Evolved". Usually seen in green MJOLNIR Mark-V Armor. Synonymous with 1337.

The Master Chief can run at up to 55 kilometers per hour. He is the embodiment of 1337ness.

Master Chief by Araquiel May 28, 2004

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Mastercheese

To run over/hit a member of the opposite sex with an automobile in hopes of gaining attention, and possibly a date from them.

"I totally MasterCheesed today when I backed up over Allison before asking her to the Prom"

Mastercheese by strife777 December 8, 2005

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