Once upon a time there was a site called http://goatse.cx/, but it "has been suspended by the registry." However, the original content is still available at http://goat.cx/. Don't follow this link if you don't like stretched anus. More information at http://en.wikipedia.org/wiki/Goatse.cx, and some relevant IRC quotes at http://bash.org/?search=goatse&sort=0&show=25.