When you are smashing out a task or performing to a high standard. Originates from kitchens where chefs are working to a high standard, quickly and efficiently turning out covers.
by BobbyDavro September 22, 2012
Get the Gunningmug. by sir climer the great November 20, 2018
Get the Gunmug. Used mostly by Mitch, who <Gets Mitchy>. Is characterized by pointing both index fingers out with thumbs pointing up, in the shape of a gun. Is followed by repeating your name twice.
by Yoko February 16, 2005
Get the the gunsmug. 
by louise June 19, 2004
Get the gunnedmug.