mack out(redirected from mack it out)
slang To improve the performance or appearance of something by customizing it with new components or decorations. A noun or pronoun can be used between "mack" and "out." I bought a car for less than $2,000, then macked it out with speakers, new tires, and a sick paint job. The company urges people to bring in their old, beat-up computers and let their team of engineers mack out the old machines, rather than throw them away and buy brand new ones.
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McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.