Amusing "Cease and Desist" notice

John Scalzi links to this NSFW cease-and-desist notice that may or may not be actually from Ann & Nancy Wilson to John McCain:

Cease and Desist, You Old Fart

Dear John McCain,

When we first learned your campaign was using our admittedly awesome 1977 classic "Barracuda" to introduce your terrifying joke of a running mate, we tried to be civil. As we wrote in our press release, "The Republican campaign did not ask for permission, nor would they have been granted that permission. We have asked the Republican campaign publicly not to use our music."

It gets a bit, um, earthier from that point onwards.