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."
Guy 2: "Oh nothing man we were just having a McBro."
by McBrahhh July 25, 2011
A nice guy with tool-ish tendencies. Often goes shirtless. Frequent conversation topics include rugby, power-lifting, and old-school hip-hop. Prefers Ferraris to women. Can be shortened to "TBMcB"."
Jeff is such a Toolbox McBro, he showed me his lats today after he got back from rugby classes. I didn't ask to see.
by Not TBMcB October 19, 2009