mack out

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mack 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.
See also: mack, out
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

mac out

in. to overeat, especially the type of food served at McDonald’s fast-food restaurants. (see also blimp out, pig out, pork out, scarf out.) I’ve been in Europe for a month, and I just want to get home and mac out.
See also: mac, out
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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