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The Master Chief is done when the man is multitasking and having doggie style sex with his significant other, while playing halo 3. The man then proceeds to stick the controller handles into the ass and vagina cavities at the same time. Be sure to keep the buttons out so that you can finish the fight.

*Note: Experience may change during online play
I got a killtacular while giving my girl the Master Chief last night!

My girl got doo-doo on my controller when I gave her the Master Chief.
by Adam Kelm June 10, 2008
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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