Bzzt. The door swings open to the grinning face of your elderly neighbor and you study the wrinkles around her eyes. “Trick or Treat,” you repeat, and she gladly picks up a dish of candy. You’re dressed as a superhero, or ninja turtle, or princess or fairy tale creature, and she starts gabbing about the constellations in the sky and her astrological sign. You have to sit and listen, but all you want is for her to place the Skittles in your pillow case or plastic pumpkin so that you and your parents can run off to the next house.