Not real sure there is a widespread acceptable Yahoo! version of a Googlewhack, but we have found a Yahoowhack that comes courtesy of Arlingtoncards.com
The two search terms, not enclosed in quotes are dangdy diggy with the single result being an article about the lyrics of a song called Cobrastyle by the Teddy Bears.
Single search result on Yahoo! for the lyrical words dangdy diggy.
More info …
googlewhack.com