It seems there might be a bit of confusion with the terms. Breaking the "fourth wall" is a well-known concept in storytelling, especially in theater, film, and television. Breaking the fourth wall occurs when a character acknowledges their existence within the fictional world and directly addresses the audience, essentially breaking the illusion that they are unaware of being in a performance or a story.
For example, a character might speak directly to the camera, acknowledging the viewers, or make comments about the story, other characters, or the fact that they are in a play, movie, or TV show. This technique is often used for comedic effect or to create a sense of connection between the audience and the character.
As for the terms "1st wall," "2nd wall," and "3rd wall," they are not commonly used in storytelling or entertainment. The concept of breaking the "fourth wall" is the most widely recognized and discussed in media and literature.
To clarify, the "fourth wall" refers to the imaginary "wall" that separates the fictional world of the story from the real world where the audience is situated. Breaking the fourth wall means the character is temporarily stepping out of the fictional world and acknowledging the audience's presence or the fact that they are part of a work of fiction.