To mack someone is to post comments about them on their friends my space pages. This could involve starting rumors or getting something of your chest.
Thus leaving the person in question, completly embarrased about what you have informed he/she about, in relation to themselves.
E.g. I just macked your ass and told fred you like him! Or, You just got a good macking of him/her, now everyone knows.
by Miss Cakes November 01, 2006

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Top Definition
flirting, being ostentatious to attract member(s) of the opposite sex
where'd those girls go? i was really mackin' it to them
by Anonymous July 14, 2002

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To get ladies without really trying, its what real players do, kind of like being a pimp
He was macking on those bitches
by Aaron "G-thing" August 03, 2005

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when ur spitting game on this super fine girl
yo check out robert he be macking right now!
by slim rock May 20, 2011

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To succeed with talking/flirting with the opposite gender (typically males to females). Often occurs at various social gatherings such as parties, hoedowns, conventions, sporting events, or fundraisers.
"Bro, last night I was straight macking at that party. I got like 7 dimes digits."

"I'm telling you man, that girl was macking hardcore on you. She really wanted the D."
by Questlover August 20, 2013

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Macking is short for making out.
The couple in the movies were macking the time
by Pizzaforpresident September 17, 2014

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To make Out
-Me and my boyfriend were macking after school.
by Relationshipexpert(: June 17, 2011

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to hang out or chill.
person 1-hey, what are you doing?

person 2-nothing much, just macking
by oready_mackin June 08, 2011

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