Observational comedy is a form of humor based on the commonplace aspects of everyday life. It is one of the main types of humor in stand-up comedy. In an observational comedy act the comedian "makes an observation about something from the backwaters of life, an everyday phenomenon that is rarely noticed or discussed." The humor is based on the premise of "Have you ever noticed?" (or "Did you ever notice?"), which has become a comedy cliché. "Observational humour usually took the form of long monologues of personal narrative, and the punch-line was either hard to predict or never came."