Mr and Mrs Twit are extremely nasty, so the Muggle-Wump monkeys and the Roly-Poly bird hatch an ingenious plan to give them just the ghastly surprise they deserve!
Notes Roald Dahl, the best-loved of children's writers, was born in Wales of Norwegian parents. After school in England he went to work for Shell in Africa. He began to write after "a monumental bash on the head", sustained as an RAF pilot in World War II. Roald Dahl died in 1990.