Rista, Ferris Bueller is another great example. Yes, that's the definition of "breaking the fourth wall" - addressing the audience. The "four walls" metaphor originates in the theater. Envision a play, on a stage. The scene is moving forward, actors talking and moving about, and then everyone freezes. One actor walks out of the scene and onto the apron, facing the audience. He's literally "broken the fourth wall" because, if you can envision four walls surrounding the scene, he stepped through one of the walls and walked right out of the room (out of the scene.) The "fourth" wall is the one facing the audience. He breaks it by stepping through the imaginary wall. He talks to the audience about what's going on in the scene, and then walks back into the "room" (inside the four walls) and the scene resumes as if it never stopped.

Cheers,
Michelle