Mack 

(1)To cum
(2)To cum on a girls face

I pulled my cock out and macked on that bitches face last night

Mack by Jizza Man January 5, 2009

mack 

verb - a word used to describe the act of a violent hit; being jolted in a destructive nature

"Mack this shit!"

mack by cameron January 1, 2004

Mack 

A complete asshole and waste of time. A Mack will play girls, cheat, pretend to love his gf, and be a complete douche to his exes who dont deserve his shit. Everyone knows him as the one to fuck over girls. A mack doesnt mean any of the shit he will say to earn trust and forgiveness. Macks will let you think your in love and knows how to sweet talk, but inside its all a game for him. Macks should be hated by all.

(girl crying)

friend of girl: aww whats wrong?

girl: I just saw my bf making out with that girl over there

next day

girl: oh nevermind bout that, we figured it out, i think were really in love afterall(:
friend: ...what a fucking mack

Mack by calichick15 May 19, 2011

mack 

To tap a frisbee already in flight in such a way to increase the spin while possibly altering its direction, or to tap on the center of the bottom of the disc to boost it higher into the air while retaining spin.

We were playing ultimate and he hucked it to me, but he put it a couple yards short of the endzone so I macked it in and caught it and we won.

mack by Jeff Latz April 24, 2003

mack 

you have just searched the maddest dog eva

hey mofo i ran into tha playa himself .... mack

mack by mackdogg April 29, 2009

mack 

Any preliminary foreplay ritual prior to genital coitus.

"I macked her whilst she was inebriated at the party..."

mack by GlaceFace July 8, 2009

Mack 

Another word for chill or relax.

1.Son i heard you got a STD from that hoe the other night

-Man Mack! who ever told you that shit fucking lied

2. Yo im going to fuck that nigga up if he messes with my girl again

- Mack bruh its not that serious

Mack by LadyBrooklyn January 26, 2010