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When you get a free McDonald's Big Mac via mobile order deals, shit inside of it, and throw it at someone's front door.
Guy 1: I'm not hungry man, what are we gonna do with this Big Mac we got for free?
Guy 2: Let's make a ShitMac dude!
Guy 1: And throw it at Justin Johnson's door? Hell yeah!
by Styx13 May 01, 2018
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2
a crappy computer thats fucking slow as hell.
rodd: isnt the fucking you tube vid loaded yet?!?!
todd: no, my shit mac is slow as hell!!
by jason padilla January 24, 2008
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