I didn't find the following link, so I gotta give props to my man the Giant of Mattresses.
1) Go to Google
2) Type in (but don't hit enter): "weapons of mass destruction"
3) Hit the "I'm feeling lucky" button to the right of where you've typed in -- don't hit the normal "Google search" button.
4) READ CAREFULLY what appears to be a normal ERROR message. Make sure you read the whole error message.

It's pretty funny.