http://www.pornolize.com
No, its not porn. But if you dont like naughty words, its probably best if you dont go in.
Just think of the URL to a site, any site, preferably one with a fair bit of text in it (the home page of your work or school is good for a laugh), punch it in, and enjoy a new take on that site.
Very crude, but funny as hell if you're as bored as I am.