abbreviation for mortal kombat, a kick-ass fighting game.
lady:whatcha gonna do today?
guy:i dunno, probably eat some hard boiled eggs and play some mk.
by knucklehead September 13, 2005
A hobbit that leaves feet hair and constantly clogs any toilet by leaving mini dead gerbils.
Why did you go MK in the bathroom?
by high5er April 22, 2010
An abbriviation of the name Mihael Keehl, which is the real name of the character Mello in the anime/manga, Death Note.
Person 1: DUDE! MK died in the Death Note episode last week!
Person 2: MK?
Person 1: Mihael Keehl!
Person 2:....Who?
Person 1:...Mello. Retard.
by Mero-cakes July 25, 2008
Short for Mortal Kombat. The greatest/goriest fighting game series ever!!!
Hey, lets go play some MK!
by JohnC7 August 19, 2005
An abbreviation for "missionary kid."
Her parents are Christian missionaries and she grew up in Peru as an MK.
by Hankle June 11, 2006
A community college in MoCo, MD-Montgomery College

AKA Harvard on the Pike
Tracey: Where does she go to school?
Nicole: MK-not smart enough for UMD.
by amanda December 24, 2003
nickname for Mary-Kate Olsen. Used by fans and Mary-Kate's friends.
MK's sunglasses are bigger than her head.
by imacarnie July 23, 2005

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