How does mark twain use dramatic irony to create humor?

Dramatic irony is when the characters are oblivious to something that the audience knows. This understanding among the audience makes the dialogues of the characters have a different meaning that creates humor or suspense.

Mark Twain portrayed the role of a deadpan narrator who had no idea that his narration was humorous. His ignorance or innocence made the audience laugh. He further makes them laugh by saying whether the audience was tickled by what he had said.