Answer:
the author's use of clues to hint at what will happen later in the story.
Explanation:
the word "foreshadowing" is a technique used by the writer to give hints or clues about the events that will occur in a story, which help the writer to create expectations on the reader and made the reader feel interested in the literary work.
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In this situation, Huck is trying to be impressive. He is trying to get the point across that he is funny and "cool". This lie is not only the one of a kind for Huck, but also one where he tries to push his reputation past its limits.