I know it when I see it - WikipediaThe phrase "I know it when I see it" is a colloquial expression by which a speaker attempts to categorize an observable fact or event, although the category is subjective or lacks clearly defined parameters. It has been a common expression since at least the 19th century. A similar phrase appears in Arthur Conan Doyle's The Hound of the Baskervilles, in which Sherlock Holmes comments on the qualit
