Mack 

n. a fat ass or big booty. Any signs of a nice shapely ass

"Damn she gotta mack on her"
"Look at the mack on that"

Mack by M Bizzle. April 14, 2006

mack 

is someone who can get anything they want from somebody ex. (money,clothes,sex etc.)

jessica just macked mike.

mack by Jessica aka (babie girl) February 3, 2003

mack 

1)to shag someone and then never call or see them again
2)to get in on someone else's woman

1)oh shit here comes jude, i macked her last week, im off to the toilet, don't tell her you've sen me
2)not so funny you macked my chick now, is it motherfucker? is it! click boom

mack by boomshank June 1, 2004

mack 

short for MacKeag, see MacKeag. And all of the other definitions.

Oh hey theres MacK, wonder what he's up to.

mack by MacKeag T. Resh November 24, 2004

mack 

crack cocaine mixed with marijuana

"Man, Tommy is still hooked on them mack blunts"

mack by Trav G August 27, 2005

mack 

to shoot or use a gun on, from the mac-10, a small sub-machinegun similar to an Uzi.

If they get in my way , i'm gonna mac them.

mack by Joe February 3, 2003

mack 

Slang 'gangsta' term for masturbation.

Despite the tough talk, us gangstas can't get none for real, so we spends all our time macking off.

mack by Arthur September 14, 2003