I'm working on a second draft, and when I hit this stage I always find that one character says the same thing in many scenes, so I have to go through and weed out the repetition and replace it with lines that makes sense. With the last book one character was always saying Jesus! This time my pet response seems to be What are you talking about? Or, for a big change: I don't know what you're talking about.
If someone says something that you think is bullshit nutty, what do you say?
Usable and unusable lines welcome!