How Your Humble Narrator Knows That Savannah Monitor Urine Looks Exactly Like Crack Cocaine (Backstory: Originally published in the online newsletter The Hell’s Half-Acre Herald in 2001, this essay comes up occasionally on why I know such terrible things. In the quarter-centruy since it first saw publication, I know so, so much more. I now have a whole list of people, particularly in day jobs, who ask the same question that Laurie…