Google uses the phrase "Whale fail" on this picture (from their error page):
What does it mean?
It's a reference to the Twitter "fail whale", integrating a Google-Books-appropriate collateral reference to Moby Dick. (It appears that Captain Ahab is dejected because the whale in front of him is green, not white; his search for the white whale has suffered a case of "whale fail".) This is all related to the fairly recent, Internet-driven nouning of the verb "fail".
It doesn't actually mean anything other than that your Web request failed.
The term "whale fail" or "fail whale" is in common usage to denote a failure of substantially vast proportion. See the Urban Dictionary entry for whale fail.
Similar phrases are "Epic fail", "Failtastic" and "All aboard the fail boat".
A known variant of the fail whale, the "red fail whale" also appears as an indication of a network connection failure in the popular Twitter client DestroyTwitter.
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