No, no . . . not one of those things for your furnace or for your car. (Confession: I wouldn't know about that stuff.) I'm talking about the all-elusive and intangible filter for people with big, fat mouths. Specifically, my big, fat mouth! (And maybe my much-too-loud, slightly alarming personality.)
What feels like a billion years ago, I worked in a bookstore. It was a dream job for me as books have always been "my thang." I navigated the moving and re-shelving of the self help section, avoided the porn beneath the counter, and steered clear of the odd ducks who frequented the SciFi corner. Overall, the job was bang-a-rang!