" My son, Sam, at three and a half, had these keys to a set of plastic handcuffs, and one morning he intentionally locked himself out of the house. I was sitting on the couch reading the newspaper when I heard him stick his plastic keys into the doorknob and try to open the door. Then I heard him say, “Oh, shit.” My whole face widened, like the guy in Edvard Munch’s Scream. After a moment I got up and opened the front door. “Honey,” I said, “what’d you just say?” “I said, ‘Oh, shit,’ ” he said. “But, honey, that’s a naughty word. Both of us have absolutely got to stop using it. Okay?” He hung his head for a moment, nodded, and said, “Okay, Mom.” Then he leaned forward and said confidentially, “But I’ll tell you why I said ‘shit.’ ” I said Okay, and he said, “Because of the fucking keys! "

― Anne Lamott , Bird by Bird: Some Instructions on Writing and Life