Top Definition
When two or more guys have a deep conversation while sitting in McDonald's. Typically between close friends or "bros."
Guy 1: "Yo dude, what were you guys just talking about?"
Guy 2: "Oh nothing man we were just having a McBro."
#mcbro #mcdonalds #mcbrah #bigmac #big mac #ronald mcdonald #miccy ds #bro #bros #brah
by McBrahhh July 24, 2011
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