A catastrophic kill, K-Kill or complete kill is damage inflicted on an armored vehicle that renders it permanently non-functional (most commonly via fire and/or an explosion). Among tank crewmen it is also commonly known as a brew up, coined from the British World War II term for lighting a fire in order to brew tea. The expression arose because British troops used an old petrol tin with holes punched in the side as a makeshift stove on which to brew their tea. The flames licking out of the holes in the side of the tin resembled a burning tank and thus the expression was coined.