That isn't a google easter egg. Apparently the guy who had the top result decided to make a google page to make it funny. Direct link to the below and you'll see what I mean.
Well, although this isn't a genuine Easter egg, It's still comical. If anyone knows of any real Google Easter eggs (or any other web related eggs) I'd be interested in seeing them.
And since SR so swiftly killed this thread, I found a pdf describing the methods of how people take advantage of Googles search engine, and other interesting information.