The man in the robe was walking around downtown in his bathrobe and shower shoes. He wanders the town in various "costumes" I guess you'd say. Some days he's dressed in gangster outfits, other days like a professor. You never know what character he'll be playing.
I'm not sure if he's crazy or just playing different roles to catch a reaction. This day, he was explaining the finer points of Hitler and how it should be applied to the bible. It made no sense.