Our brains use other memories and other stories when there are gaps
He stops a wedding guest on the street by grabbing their arm and making them listen to his story.
Option #4 is clearly the best way to go. Not only because the first three are insufficient answers, but also because we know that the Native American tribes, regardless of which precise tribe, kept their traditions alive through oral tradition (by telling the next generation, which, as a result, tells the following generation, and so on).