one-time
n.— «A disheveled black man rides close to the car on his bike and taunts us. “I know what time it is,” he says. “‘One time’ means police,” Feldtz says. “That’s what they call us, ‘one time.’”» —“Inside the Box With the Super Dope Cops” by Sam Slovick L.A. Weekly (California) Dec. 23, 2005. (source: Double-Tongued Dictionary)