Top Definition
A phrase created after some one misheard "back in year nine...".
Now accepted as a faux-ghetto slang term. Can be used at any random interval but works well if some one has offended or insulted you in any way.
Man 1: You're a knob
Man 2: Don't mack on my nine
by Vincentw00t September 23, 2005
5 Words related to don't mack on my nine

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