ordering from 2 different bartenders

pet peeve of every bartender in the world: customers who order from two different bartenders at the same time, with the same order, because 1) they think you're too incompetent to remember their order, 2) they are impatient, 3) they think all of us behind the bar can communicate with ESP. this idiot ordered 3 rum&cokes, then when i brought them to him apparently he had already just gotten them, from the other bartender. MORON.