In looking up this word, I found a site about UK vs US slang that is a fun place to browse:
http://www.suslik.org/Humour/National/ukus.html#empire

That's a fun time-waster, Dr Bill! And a neat reference to "crib" for the Brit/US word quizzes!

Hey, shanks, remember explaining this to me? I got the idea, but not the picture...

Is this it?

http://wordsmith.org/board/showthreaded.pl?Cat=&Board=wordplay&Number=6973

Yep! :-) Hey--I found a picture!
http://samrat.hypermart.net/new/tc.jpg