The fourth wall is an invisible, imaginary wall separating actors/characters from the audience. The audience can see through this wall, but it is assumed the actors/characters cannot. In film, "breaking the fourth wall" happens whenever the actors look directly into the camera and address the audience. Examples include Oliver Hardy looking into the camera to get sympathy from his audience, or Jerry Lewis in The Nutty Professor, or Ferris Bueller. In literature, breaking the fourth wall is a technique often used in metafiction. The metafiction genre occurs when a character within a literary work acknowledges the reality that they are in fact a fictitious being. Have you ever broken the fourth wall in your writing? What do you think of this as a technique?