Top Definition
To kiss passionately with someone for an extended period of time; commonly "to make out"
This phrase can also describe sexual relations beyond kissing
Often used as a conjoining phrase using "with" and a noun
I was mackin' it with some girl at that party last night. She was HOT!
by Michael Braun December 07, 2004
6 Words related to mack it
Verb.

Derived from the term mack. This word is often overused in situations that do not apply.
Kelly: Paul, can you pass me my pen?
Paul: Sure. ::passes pen::
Kelly: Thanks.
Brandon: Mack it!
Kelly: Shut up, Brandon.
Paul: Who's mackin' it now?
by Jerk The Mom December 02, 2003
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