Short for Marcus, who may or may not be found working at the pet shop next door.

Who knew him kumquat rotary engine.

mks also writes vignettes.
Everyone loves mks. Except those who don't; we hate them anyway.
by dnl May 14, 2004
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n.- a person (typically female) who uses cocaine in excess, to the point which she must claim to suffer from an eating disorder to justify her drastic weight loss.

n.- not referring to Mary Kate Olsen. Where did you get that?
Kendra has turned into a total MK since she started dating Dwayne and hanging around busted-ass homies.
by S-money and B-Killa October 20, 2005
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As in Mary-Kate & Ashley Olsen. Something that is very trendy, new, or fresh. A brand new trend in the AG world, cutting edge, young.
when doing something for the first time: This is soo MK&A
This place is totally MK&A
by VerucaKrueger April 09, 2004
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A CIA funded project in the 1950's and 60's, that specilaized in mind control and brain washing as a mean of putting hookers/bums And POW's under the influnce of LSD or the use of any ohter sick mind control experiments the CIA was using. They put one man under the influnce of LSD(acid), For 77 days straight. The word brain washing was coined by a former CIA leader when he was trying to explain the meaning of the word to the public.

MK-UlTRA is also a good strain of marijuana.
Yo dude did you hear about MK-ULTRA there making a machuarina canidate it's bush!!!
by g0000gle b0b December 10, 2006
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An automatic weapon that looks like something from a Road Runner cartoon, or a Half-Life Team Fortress cheat. Fires chain-linked 40mm grenades out of the business end at an inhuman rate of fire, kicking significant ass on the other side when wielded by a competant operator. Can fire HE, HEDP, and a special self-guided round that can locate an enemy insurgent, bore through several layers of clothing into his rectum, and lodge just behind his testicles (where it detonates).
The Saco Industries Mk-19 has made you my bitch, Haji.
by DrCruel March 21, 2008
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a CIA project in the 1950s where they did experiments for mind control.
CIA got fucked hard by this
LSD was created as a pill to use for mind control
a few people went crazy and killed themselves from taking it during mk ultra
by Dong Woo February 06, 2005
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