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.
(..) - He's known... - An old friend of the family. I've known your mother a long, long time. - Why do they call you Littlefinger? - Arya! - Don't be rude! - No, it's quite all right. When I was a child, I was very small, and I come from a little spit of land called the Fingers, so you see, (..)2011 TvShow: Game of Thrones Title: Cripples, Bastards, and Broken Things Season: 1 Episode 4