Frustration.

A customer just called up to tell me that our quotes are always screwed up.

The problem is, he doesn't know what the hell he's doing. He was trying to get a quote on a contract that is expiring, for one. For two, he's not indicating which month, so of course he's not going to get quotes for the specific month.

Of course, extracting this information from him is like trying to remove a tooth from a cheetah's mouth while it's running full boar, and you're in a airplane hanging upside-down, blindfolded and wearing oven mits. Oh, and you're roaring drunk, which is pretty much the only way I'll ever be hanging upside-down from a plane.