BBQ at my brother's was an event. Apparently he thought the only cleaning necessary for a gas grill was to scrape the cooking grid and empty the drip cup. He fires it up full blast then tosses the frozen burgher patties. 2 minutes later when he goes to flip, he opens the lid and there is a mushroom cloud of flames and smoke. His sons Shemp and Curly run to get WATER to put out the flames. My brother is sticking his BBQ tools into this inferno to rescue the flaming burghers.
Good old Bob has to slam the lid, turn off the tank, and chase the knuckle heads away. Once cooled we tore the thing down to clean. The pan below the cooking elements was thick with grease enough to fuel that fire for an hour. Round 2 was marinated chicken breasts and juicy sirloin steaks. Yum.