Gray’s Papaya. How many late-night stops have I made? How many blocks out of my way have I walked? How many not-so-crazy justifications have I come up with? (Well the pens at the Citibank on 72nd always work and if I’m already there…) I try not to make sweeping generalizations when it comes to food, but I defy you to locate a better hot dog in the borough of Manhattan.