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.
(..) So... So... contain it! Right. If she's staring at all my jewels, she can't take her eye from... Frankly... it was rude. Oh, Haymitch. You should join us. We're having some of your favorite dish. Oh, lovely. (..)2012 The Hunger Games