These are real websites (and completely safe to view at work) that have chosen some pretty unfortunate website names.
http://www.whorepresents.com - Who Represents? Find out the names of celebrity representation.
http://www.penisland.net - Get your mind out of the gutter. This is where you go to get customized pens for your business.
http://www.therapistfinder.com - Find a therapist in California at the Therapist Finder website.
http://www.speedofart.com - Speed of Art
At least the Speed of Art website completely embraces its infamacy, with a link to other unfortunately named websites right on its front page. They're quite proud of it. Whatever works, I guess.
If you like this, take a gander at these: