The light and cheaper version of an Irish Car Bomb. A combination of Pabst Blue Ribbon and Smirnoff Vodka. Usually a shot glass of Smirnoff is dropped into a pint of PBR.
Take a pint of Pabst Blue Ribbon, pour a shot of Smirnoff vodka. Take the shot glass and drop the entire thing into the pint of PBR. You are now drinking a Pabst Smir. Enjoy.