The Function of Whistling in the Dark

Rob: I think the phrase like whistling past the graveyardor whistling in the dark, is supposed to denote like somebody showing bravado. But what i notice, and that comes up in the example i just mentioned, is that people often do this when they're alone,. When there's nobody there to see them, nobody to show off too. So if whistling is to show off that you're not afraid, it seems like the showing off must either be to yourself somehow, or to, like, the scary creature that you imagine is watching you. Yes, it would have to be one or the other. In some of these cases, especially anything about graveyards, there