It's like a really obnoxious catchphrase.

Read to Chapter 4. Still nothing major happening. Holden continues to be largely unlikable.
I have also decided that I strongly dislike aspects of the writing, especially the reuse of certain phrases. That is to say, I really hate the fact that Holden constantly uses the phrase "I really do" (or "he really does" or anything like that). It's one of those things where if he continues to reassure me that it's true, I believe him less. In fact, one could argue it makes him look like a phony, which, consequently, another word I want to throttle him for using.
To speak like Holden for a second, my thoughts on Catcher in the Rye : I think that this book is a phony. I really do.