How is Holden a liar in J. D. Salinger's The Catcher in the Rye?

Caulfield not only lies to the people he interacts with throughout the story, but also
continually lies to the audience as an unreliable narrator. At the beginning of the story,
Holden even mentions that he is the "most terrific liar you ever saw in your life" and
proceeds to lie throughout the remainder of the story. Holden lies about his appearance to the
audience by saying that he looks significantly older than he really is. However, Holden cannot
get served alcohol at several establishments, and the girls at the Lavender Room make fun of him
for his youthful appearance. Holden also claims that he hates the movies and America's
entertainment industry, yet goes to see them often, pretends that he is in an action movie, and
even takeson a date to the theater.

Holden blatantly lies toon the train by
saying that his name is Rudolph Schmidt and proceeds to make up stories about her son, Ernest.
When Holden interacts with the prostitute named, he also lies...