an ever recursing series of obsessions
Columbia student: Do you go to NYU?
NYU student: Yes, how did you know?
Columbia student: I could tell by your dirty shoes. NYU gets their students from the homeless shelter.
NYU student: Excuse me?
Columbia student: I'm your biggest enemy.
NYU student: What?
Columbia student: I go to Columbia.
NYU student: Can you leave me alone?