Read the guy's t-shirt. This is probably an existential statement, but I don't understand existentialism at all. He said it's a line from Bartleby the Scrivener by Herman Melville. See the review at http://en.wikipedia.org/wiki/Bartleby_the_Scrivener for more information on the importance of the line. It's funny here because this guy was at Fantasy Fest, where people vie to get their photos taken.