New Zealand appears as a smudge on the spine of Nicholas Ostler's book about the history of languages, Empires of the Word, but when viewed under a magnifying glass, the cartographical splodge resolves into the refrain of a satirical New Zealand pop song from the 1970s, 'We Don't Know How Lucky We Are'.
Who was the cheeky cover artist who did this? Whoever you are, kudos!