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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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Jan 23 Word of the Day
Adjective for something that definitely wasn't lame, but not quite "hot". In other words, slightly below being hot, therefore warm, like a nice pair of mittens.
"How were things at the club last night?"

"Plenty to drink, but the music was no good. I guess shit was mittens."
by 122445 May 14, 2006
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