This cup had a ceremonial purpose, to seal a deal between two chieftains who each drank out of one of the spouts. I’m not sure what they drank, but undoubtedly something potent. Other examples are known, of course, but the addition of a limp phallus is unusual. At first sight it seems marvellously comical, a piece of wood that, with its feet and phallus, aspires to the human condition. R. Crumb could have paired it up with Honeybunch Kominsky, trucking on down Madison Avenue.