Did you just jinx yourself? Did you say the thing that you do not want to come true?

Quick, find some wood to knock on! Can't find a piece of wood? Oohhh "IT" is going to happen for sure!!!!

But wait! You have a piece of wood on your keychain for just such emergencies! Knock on your portable life saver, stop "the thing" from happening, and release the anxiety of not being able to find wood to knock on!