PTPPI just did a particular Googlesearch, which returned no results, except for a sponsored link for "James Dean Originals".
I know this is a bit 'niche', but if you know James Dean (not the actor, by the way), and have ever been to the pub with him, you may have heard this particular joke, which he'll challenge you to remember after just one recital (near impossible, I might add). Curiously, the Internet knows nothing about it - or does it?
(Sorry, I'm carefully avoiding writing the name of the joke, as that'll get indexed by Google - click the image for a larger version which has the name in it)