Here’s what you need going in: Blutwurst (a blood sausage) invites her friend Leberwurst (a liver sausage) to dinner. On the way up the stairs, Leberwurst keeps passing things that are very much not fine. It’s the kind of wrongness you’d normally turn around for, if social obligation didn’t exist, but she goes in anyway. What waits for her at the top is less a meal and more a warning that she should have heeded sooner, and the tale ends on a line of dialogue that’s stuck with readers for two centuries for a reason.