[She meant that in a less-than-literal manner.]

Well... I don't know that that's what they're literally called. But I didn't really have a chance to ask before they slipped away. Personally, I think "obnoxious little book-stealing assholes" is a good enough name, but I'm not in charge of naming things for a good reason.

[Can you tell she's salty? She's not usually this grumpy. Or sweary.]