I guess I’m not at all into supernatural stuff, so I wouldn’t think “creepy” as in ghosts, but I’d for sure be wondering if there was someone waiting away from the door to cause me problems if I stepped out to look without locking the door behind me. And I don’t live in a place where that kind of thing is common.
I think the point is that you don’t really know it’s kids playing a game. Your doorbell rings at night and there’s no one there.
Unless you think ghosts are real, there really aren’t many possibilities. Late in the evening it’s more threatening than creepy.
I guess I’m not at all into supernatural stuff, so I wouldn’t think “creepy” as in ghosts, but I’d for sure be wondering if there was someone waiting away from the door to cause me problems if I stepped out to look without locking the door behind me. And I don’t live in a place where that kind of thing is common.