Afirst-person narrator— describes the actions and thoughts of all characters plays no role in the story describes the actions but not the thoughts of the main character tells the story in the voice of one of its characters

What is implied in this sentence from mark twain's "the ? 1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.