What you say to someone who is preforming an act of stupidity or just plain lameness. When somebody is being dumb or annoying you tell them DONT BE THAT GUY.
(SO AND SO just unnesscasarily adds to a joke or comment that is quite frankly not funny)

"DUDE, dont be that guy."
by JTARPZ October 02, 2009

7 Words Related to Dont be that guy.

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