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2.
Mammary Alienation Syndrome. Horrible malady afflicting children that have been breastfed by a wet nurse.
Though it seemed like Terets, her child was actually suffering from M.A.S.
by bjacobs27 May 11, 2010
 
1.
MAS
Mildly Amused Smirk. Because how many people actually LOL at the internet? Think about it.
I saw a man fall off the roof. MAS
by Frumy October 10, 2008
 
3.
mas
Spanish: more, or very
This is mas cool. - This is very cool.

Dude, mas cheese on these nachos. - More cheese on these nachos.
by DistalBraker January 07, 2005
 
4.
Mas
Short for Masturbation.
ie Dude, if you dont have your laptop for porn, what are you going to Mas over?
ie Dude, if you dont have your laptop for porn, what are you going to Mas over?
by 3842Crew October 21, 2009
 
5.
MAS
M= making
a= a
s= sandwich
I bet dallas is Mas right now...
by Kylende14 May 03, 2007
 
6.
MAS
Acronym. Stands for Male Answer Syndrome. (Pronounced - MASS) Used to describe a male know-it-all who doesn't really know-it-all. Not necessarily a complete idiot, but someone who tends to dish out inaccurate information on a regular basis - but with complete confidence and a touch of arrogance. Usually provides this information without invitation or provocation. A Cliff Clavin if you will.
Sandy and I were discussing the new guidelines, and John -in typical MAS fashion, chimed-in with his unsolicited anecdotes.

by RouxDog June 10, 2008
 
7.
MAS
Acronym: Mutually Assured Sodomization

Sodomiztion does not necessarily mean ass raping, but it can. It might mean getting fucked up as in messed with
He trashed my car so I raped his house. Now where on a MAS type of relationship
by defiler April 12, 2004