The borough has a place in several American idioms. The phrase "" is meant to convey an extremely short time such as an instant, sometimes in hyperbolic form, as in "perhaps faster than you would believe is possible," referring to the rapid pace of life in Manhattan. The expression "melting pot" was first popularly coined to describe the densely populated immigrant neighborhoods on the Lower East Side in Israel Zangwill's play "The Melting Pot", which was an adaptation of William Shakespeare's "Romeo and Juliet" set by Zangwill in New York City in 1908. The iconic Flatiron Building is said to have been the source of the phrase "23 skidoo" or scram, from what cops would shout at men who tried to get glimpses of women's dresses being blown up by the winds created by the triangular building. The "Big Apple" dates back to the 1920s, when a reporter heard the term used by New Orleans stablehands to refer to New York City's horse racetracks and named his racing column "Around The Big Apple". Jazz musicians adopted the term to refer to the city as the world's jazz capital, and a 1970s ad campaign by the New York Convention and Visitors Bureau helped popularize the term. Manhattan, Kansas, a city of 53,000 people, was named by New York investors after the borough and is nicknamed the "little apple".