Cather in the rye what is all the david copperfield kind of crap?

In "The Catcher in the Rye," Holden Caulfield uses the phrase "all that David Copperfield kind of crap" to refer to melodrama and exaggerated storytelling. He is frustrated by people who fabricate stories or act insincerely, preferring authenticity and honesty in human interactions. The comparison to David Copperfield, a character in the Charles Dickens novel of the same name, highlights Holden's disdain for what he perceives as phony behavior.