How to blocks links using hosts file?

[Online1100]

Hello, I'm new here. I have to block a certain page and don't know how to do it.
I want to block a certain link(not the whole website) using hosts file. I know how to block a site but not a single page of the site.
For example: I don't want to block "youtube.com" but want to block this link: "youtube(dot)com/watch?v=ulyG94KsJpY"

 

[iFargle]

This looks decent:
website - Block specific URL on web browsers - Super User

Apparently you can't block specific URLs with the default Hosts file, so this will probably be a better solution.

EDIT: Errr sorry, meant to link to this.
http://www.privoxy.org/