For any given piece of incoming information, your nerd is making a lightning fast assessment: relevant or not relevant? Relevance means that the incoming information fits into the system of things your nerd currently cares about. Expect active involvement from your nerd when you trip the relevance flag. If you trip the irrelevance flag, look for verbal punctuation announcing his judgment of irrelevance. It’s the word your nerd says when he’s not listening and it’s always the same. My word is “Cool”, and when you hear “Cool”, I’m not listening.
— Rands In Repose: The Nerd Handbook. Damn, I was using that. Now I have to change my word.