Given the recent confusion with the name of the Sears Tower being changed to Willis Tower, Chicagoans can now simply refer to it as 'that Big-Ass Blue Building.'
This clears things up rather nicely. If a tourist should ask 'What big-ass blue building?' Simply point at it from wherever you are and respond: 'THAT Big-Ass Blue Building.'
Today, my friends and I are going to the top of that Big-Ass Blue Building, where we will photograph Chicago below.