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43.
Mac
Someone who is sly and cunning.
Jerry: Jimmy has alot of Mac.
Nick: He does, you see the way he got into the ball game for free.
by SsTtUu April 09, 2011
 
44.
Mac
A guy who moves in for his best friend's leftovers.

M- move in
A- after
C- completion

Wait till he's done, swoop in, give her a shoulder to cry on, then hump.
Nah, I'm not your wing-man, I'm swimming in your wake. I'm Mac'in.
by cougrrr November 19, 2009
 
45.
mac
MAC = Magnetic Acceleration Cannon
Cortana fired three successive rounds out the MAC gun straight into the covenant frigate. Its shields faded, died, and the last round ripped a massive hole through the floating behemoth.
by evan schmidt June 01, 2007
 
46.
Mac
A character in the Cartoon Network show, Foster's Home for Imaginary friends. Mac is eight years old and comes to visit his imaginary friend, Bloo, every day because his mom made him give Bloo up. Mac is pretty much the coolest eight year old ever.
Mac is the coolest eight year old kid ever.
by ms.insomniac July 28, 2006
 
47.
mac
popular line of cosmetics especially for society's creme de la creme and celebrities
gonna run over to the mac counter for some eyeliner
by jane doe March 18, 2005
 
48.
Mac
A very obnoxious dickhead who creeps on little girls.
Girl 1: I just met a kid named Mac.
Girl 2: Stay away from him. He will rape you.
by Billy Nye2 January 17, 2013
 
49.
mac
the coolest biggest pimp in the world
Dang mac, said all the girls, you are a pimp
by Codu March 02, 2008