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.
(..) make up your mind Don't you know, girl Bow, bow, bow You'll be a woman soon One drink and that's it. Don't be rude. Drink your drink. But do it quickly. Say good night and go home. URGE OVERKILL SINGING: Girl (..)1994 Pulp Fiction