I think "Britpicking" is the appropriate term, but "crap" is an incongruous word for Moody to keep using the way he does. "Crap" as an interjection is a very American-sounding usage.
I noticed that too--I'm not sure what it is with Moody, but in an earlier revision of Chapter 97 he'd ended the chapter by saying "what the crap--" (it's now been changed to "WHAT -"). It's unclear if EY edited the earlier chapter because it wasn't very British or because it seemed out-of-place, but for whatever reason, he's saying it again now.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 119.
Plans for next chapter release:
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)