Can you explain what is rude? I am not a native speaker so I just looked up the phrase you seem to point to and the two first definitions says it means: - Ver

Can you explain what is rude? I am not a native speaker so I just looked up the phrase you seem to point to and the two first definitions says it means: - Very difficult for one to comprehend or do. - not something that I can understand Am I missing something here? Besides, I feel you moved the goal posts early on. I replied to you talking about the whole book, you replied with a single example. Please let me know if I've missed something.