Oh man, that's the worst! When you get that strange feeling that someone is staring at your back, and then you say, "Is anyone in here?" (because you are too lazy to turn around), and someone says, "Oh, yes" and you respond in your snottiest voice possible, "You're still here?" and they *still* don't get the hint. BTW, I don't do this to everyone, just the senseless one's who can't pick up a hint the first time around.