If you think this job is going to be easy, you're in for a 'rude shock'. [=you will be unpleasantly shocked when you find out that this job is not easy at all]
He's about to have a 'rude awakening'. [=he's about to find out something that will shock him unpleasantly]
I was 'rudely' [=suddenly and unpleasantly] awakened from my nap.
(..) the most elaborate French. Those parrots talk about everything. Politics, movies, fashion. Everything but religion. Why not religion, Dad? It's rude to talk about religion. You never know who you're gonna offend. Josephine actually went to the Congo last year. Oh, so you know. Hello. (..)2003 Big Fish