Smmfgdh: Branching off of the simple "smh", which is 'shaking my head' for people who aren't familiar, "smmfgdh" is a more dramatic approach and means 'shaking my motherfucking god damn head.' It's more for those very serious moments...like when you're about to bag it, and she ends up smelling like fish. Or when your girl had to run to her car and get her GPS in an attempt to find your schlong. Or when McDonald's gives you mustard when you CLEARLY asked for ketchup. SMMFGDH.
by Douches. November 01, 2010