Compare the way authors have used the pronoun "you" in stories "How" by Lorrie Moore and "The Cask of Amontillado" by Poe.

In both short stories, the use of you
is a hint that there is an unreliable and possibly not quite sane narrator.  In each
case, the second person point of view is used in unusual ways.  Second person is by far
the rarest point of view.

In “The Cask of Amontillado” by
Poe the use of you is intended to be disarming.  In the beginning
of the story, the narrator directly addresses the reader as an intimate
friend:

The
thousand injuries of Fortunato I had borne as I best could, but when he ventured upon
insult I vowed revenge. You, who so well know the nature of
my soul, will not suppose, however, that gave utterance to a
threat.

Throughout the rest
of the story, he addresses Fortundao with you, reinforcing the idea
that they are just two friends going on a stroll.  This is intended to put Fortunado at
ease and off guard, so he will be easier to kill.

In “How”
by Lorrie Moore, you is used as a character, a woman.  This unusual
use of you breaks assumptions about the role of the reader and the
use of the pronoun.  This intimate and unusual use of you makes the
reader part of the story, whether male or female, but also makes it harder to discern
the reliability of the narrator.