23 skidoo (sometimes 23 skiddoo) is an American slang phrase popularized during the early twentieth century, first attested before World War I and becoming popular during the 1920s. It generally refers to leaving quickly, being forced to leave quickly by someone else, or taking advantage of a propitious opportunity to leave, that is, "getting [out] while the getting's good." The exact origin of the phrase is uncertain.
23 skidoo has been described as "perhaps the first truly national fad expression and one of the most popular fad expressions to appear in the U.S," to the extent that "Pennants and arm-bands at shore resorts, parks, and county fairs bore either [23] or the word 'Skiddoo.'"[1]
Category: Animals | Detectives, Private Eyes and Other Investigators | Johnson Smith Catalog | 1950s