Definitions by theoneplayerplease

Mack 

to have a certain x-factor without effort. A mack can also be described as a John Tucker type character whereby he's hugely popular with girls and worshipped by boys.
mackin is the being of a mack.

"Who's that boy that everyone loves...he's a true mack"

Mack by theoneplayerplease November 18, 2007