I was chatting with my sister online this morning while she was trying to find a googlewhack. We actually found one: "hornswoggling googlewhack" (screen shot here).
However, it doesn't count as a googlewhack.
A googlewhack is a combination of two words that yields one result, but Google must be able to recognize each of the words in the googlewhack, by linking to a definition of the word.
When searched, the word "googlewhack" doesn't link to a definition ... which is especially interesting, considering that the one result for "hornswoggling googlewhack" is a text list of acceptable tournament Scrabble words.
Moral of the story? I would totally beat Google at Scrabble.