How to hide with whom a post is shared with on Facebook?

[Paolo]

I want to make a post that is visible to a specific friend but i don't want them to know that they are the only ones meant to see the post
I' m not talking about selecting an audience, but preventing the "intended" audience from knowing THEY are the INTENDED audience as they pass their mouse over the audience icon next to a status once it's published and appears as a newsfeed.

[abraXus]

http://abrax.us/Facebook/UsingLists.php

[Karen]

For that while posting go the share preference and select custom setting there.