Don't scream at an associate, period.
Look, I'm sorry if we're out of the merino wool sweater in cobalt blue with the penguin on the front, but that's not my fault everyone seems to want to walk around with a stupid smiling penguin on their chest. If I say we don't have something, I'm not trying to make your life difficult, so there's no need to ever yell at an associate. We do the best we can.
[Photo via @brooksbrothers]