Because I watched too many "Man Law!" commercials during this weekend's football games:

 "There must be a stub or a test fixture in every codebase that uses the Simpsons as a theme for fake data"

 
CodingLaw!
 

P.S. A consistently effective way to break the ice during pairing sessions is to decide on the fake data theme of the day.  A couple years ago I was on a team with some client developers that weren't exactly warming up to us consultants (not the first or the last time).  As silly as this sounds, one of the coders got a bit friendlier after we used a NASCAR theme for a day in our unit tests.  With another coder we started using a Hair Metal band theme.  Star Wars/Star Trek are cliches now, just throwing ideas out at you that I've used:

• Dukes of Hazzard
• Zelazny's Amber series (for the two of us who knew what that was)
• Hitchhiker's Guide to the Galaxy
• Wheel of Time