Some of the seemingly innocent phrases that we utter today have disturbing historical backstories. A cakewalk was a dance performed by slaves for their masters, blockbusters were big bombs created during World War II, and deadlines were literal lines drawn during the US Civil War to discourage prisoners from escaping.
‘Blockbusters’
Today, a “blockbuster” is a movie, book, or piece of music that is widely accepted and commercially successful. The origin of the phrase dates back to 1942, during World War II. A blockbuster was a huge aerial bomb. It weighed up to 1,800 kilograms (4,000 lb) and could destroy a city block. One of the first written references of the word was in the September 29, 1942, issue of Time, narrated the testing of several blockbusters.