What does it mean to break the second wall?

What does it mean to break the second wall? Breaking the Second wall is when a character acknowledges a story like structure or plot to their life or to the day. Breaking the Third wall is when a character acknowledges directly or indirectly that they are in a movie, tv show, comic book, book.

Breaking the Second wall is when a character acknowledges a story like structure or plot to their life or to the day. Breaking the Third wall is when a character acknowledges directly or indirectly that they are in a movie, tv show, comic book, book.