This isn't funny and I'll tell you why. Have you ever been close to tragedy? Or been close to folks who have? Have you ever felt a pain so powerful, so heavy you collapse? No? Well, I've never had to knock on wood, but I know someone who has. Which makes me wonder if I could. It makes me wonder if I've never had to knock on wood, and I'm glad I haven't yet. Because I'm sure it isn't good. That's the impression that I get.