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1 definition by YourPseudonym99

 
1.
GBM
An acronym for "Generic Business Men". Used to refer to the ubiquitous suit-and-tie sort that crowds restaurants around noon during the work week. Often travelling in groups, these creatures are easily identified by their nearly identical work uniforms, boisterous but insincere laughs, and alcohol breath.
"The Tavern was full of GBMs so went to ate at BJs Brewery"
by YourPseudonym99 March 08, 2013