Farris Bueller's Day Off is an excellent example, actually. But it's trickier to do this sort of thing in print than on camera or on stage.

If I recall correctly, Farris Bueller has the difference I was trying to convey. A lot of movies and TV shows have a voice-over of the main character, talking about the back story or discussing why he/she is doing whatever we see the moment. But in Farris Bueller, the difference is that he looks into the camera and talks about it, right in the middle of the scene. Or just gives the camera a look from time to time.

In print, you have to change from the normal "I did this and that", or "I was thinking so-and-so" narration of a standard first person narrative. You have narrative that is more like dialog directed at the reader directly, second person. Looking them in the eye. But it needs to be more than just an occasional comment to be true fourth-wall breaking. Like the main character telling the reader something like. "Want to know why? Think back to your thirteenth birthday..." or "If you don't agree with me, well, I don't really care. That's what I think, no matter what you say..."

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Regards,
Eric Fretheim
Assistant Prep Leader, 2015 October NaNoWriMo Prep Challenge

"It is perfectly okay to write garbage-- as long as you edit brilliantly." ~C.J. Cherryh

“No, writing 50,000 words in a month is normal. You are not crazy. This is not insane.” ~Teri Brown