Along similar lines as the last book I recommended, Monsters Eat Whiny Children (Simon and Schuster Books for Young Readers, 2010) by Bruce Eric Kaplan is funny with an edge of scariness. In this two whiny children are told by their father that monster's eat whiny children. Of course, they didn't believe him. But one day a monster came and stole them away. The story just makes me smile every time I think about it.
If you like this book, you'll want to check out another of Bruce's titles: Cousin Irv from Mars.