When I get home from work, there’s a small twig – about six inches long and boasting a handful of leaves – shoved into the mesh of the screen door. In Greek (and some other European cultures), this is a calling card – somebody wants me to know that they’ve visited. Only one person’s ever done this – IDIOT FRIEND, albeit years ago, before he was IDIOT FRIEND (although, no doubt, he was still an idiot). His work occasionally takes him through the area, and he’s randomly dropped by in the past. One time, he did exactly this – snap a twig to prop in the screen door. Obviously, he’s…