On the side of the University Chapel there is a storm drain that has a scowling bulldog carved on it. While Ed and I were walking around, a campus tour guide walked over with a small group and we were listening in when she told the story behind this. I didn't catch everything she was saying, but apparently it was left there as a joke by the architect's main assistant who happened to be a Yale graduate (the Yale mascot is a Bulldog). Not surprisingly, the Yale position is that it's there so that Yale students can rightfully look down on all the Princeton students. The Princeton response to that is simply that the Bulldog is its rightful place . . . right in the gutter.
Princeton is a pricey town, even for having a college there. However, it does in fact have the college there, which precludes students from going to a lot of the places in town -- thus, you can still get by cheaply if you look around.
If you are in the need of a toilet, the nicest one I have found is in the Nassau Inn, a posh hotel located at 10 Palmer Square. Just walk past reception like you belong there and the restrooms are down the hallway.