River's sense of humor is unorthodox at the best of times; she may or may not have been strictly intending to make a joke.

When the bustle of a Milliways evening intrudes on the quiet of the airlock, River takes one more deep breath in. Her back straightens a little more -- River can't hide her feelings much, and she's definitely more battered (and more armed) than she started out the evening, but she can control some of her body language, at least -- and moves towards the door.