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.
(..) Somehow I doubt that Homer is excited. of all the men you could've married, I don't know why you picked one who's always so rude to us. - Good one, Dad. Okay, kids, prepare to be dazzled. Marge, turn on the juice! - What do you think, kids? (..)1989 TvShow: The Simpsons Title: Simpsons Roasting on an Open Fire Season: 1 Episode 1