"Yuletide Gastropod" is, or more properly was, a Googlewhack. A Googlewhack is a sort of personal contest where you enter two words into the Google™ search engine. If your two words generate precisely one hit, i.e. one single page on the Internet, no more, no less, then that is a Googlewhack. There are a few additional rules for a true Googlewhack, but that's the basics of it.
Yuletide Gastropod was my wife's first Googlewhack way back in 2005 or so. Today, Yuletide Gastropod yields just over 5,000 hits. Now, on JSVB, I am adding one more:
For this post, I've repurposed the gastropod from a previous JSVB entry. Please click here to see it.