From
http://itemnotasdescribed.com/2009/05/07/funny-classifieds-half-a-surf-board/:

Commentary from itemnotasdescribed.com:
The other half has been re-purposed as the tombstone for the dead surfer who last used it.
Perhaps you know another recently passed surfer you could honor with this half. Or maybe it would make a good prosthetic whale tongue?
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Website has a bunch of odd craigslist postings, mostly of free stuff. His entry on the half surfboard is a bit mean but funny.