mad dogging
n.— «Hernandez said Ryan Concepcion was in a car when Ortega stepped in front to force the driver to stop, and the two men stared hard at each other. Such an act, called “mad dogging” in gang parlance, is considered a challenge among gangsters.» —“Lake Elsinore gang member testifies against murder defendant” in Murrieta SignOnSanDiego (San Diego, California) June 7, 2007. (source: Double-Tongued Dictionary)