On November 17th, 2004, I got these search hits in my Apache log.
Obviously someone's just having fun with their customized build of Firefox or Mozilla or some other browser. This is especially likely here, since the poster is using a nonstandard User-Agent 1; generic browsers would identify the referral site correctly.
I have to say, however, that it did raise my eyebrows when reading the stat summary. This is, I'm sure, just what the author intended.