Drop quiz.

The is a test! The Doser will never know the results, of course, but you will. Here it is: Do you still moisten the bristles of your tooth brush before you brush your teeth? Yes or no - admit it. Your assignment for the next session is to think about "memory" and "habits." Do you have other habits as pernicious as unthinkingly moistening a plastic bristle tooth brush years after natural fiber tooth brushes were long gone?