Till last week, there were two types of people in Mumbai: those who live south of the border (SoBo-ites) and those that reside north of it (NoBo-ites). What is this border, you will ask? It is the Bandra-Worli Sea Link. (You could argue that it should be SoMu, i.e., South Mumbai, and NoMu i.e., North Mumbai, but it is not to be yet.)