Roald Dahl made his career writing children's books that dared to be mean (yes, sometimes in rather unfortunate ways). Across almost 20 novels, the British author spun fantastical tales with unsentimental wit, infusing his work with darkly morbid humor, blithe child endangerment, rotten and antagonistic adults, and a willingness to occasionally laugh at the misfortune of others. And no other work of Dahl's gets more pitch-black than "The Twits," a thin, acidic little text about deeply repugnant people.