A mack can be a person who is smooth, slick, the Best of the Best, a Pimp, a Ladies Man, the guy who runs everything a.k.a. the Boss. A mack is a person who is always flirting and hitting on girls. Almost always successful at it too.
Mack can be used as a verb, as the act of flirting and hitting on girls.
I'm gonna go mack on some fine ass bitches right now.
1. to make out with
2. to fool around with
3. to do everything short of sexual intercourse
4. to display acts of public affection
2. Quit mackin' with me, baby.
3. They were macking like bunnies. Very horny castrated bunnies.
4. One should never mack in a public parking lot! If you're in the car, though, that's okay.