Who said "Teabaggers" first?

Every once in a while I get into an argument with someone who tells me, with a straight face, that it was the Tea Party Protestors who came up with the term "Teabaggers"... and that its not their fault that they call Tea Party protestors Teabaggers.

Most recently, I got into this argument with an earnest member of the left who insisted it was because of protestors who, on April 15th, wore Teabags on their hat.
Forgetting for a moment that putting teabags on your hat is not the same as being asked to be called a Teabagger, I did my research.

Predictably, it turns out that a member of the left who started using the term.

Rachel Maddow went on the air April 9th (6 days before the protest), and in giddy glee, she played a few tapes in a row of guys holding up tea bags who said that we should tea bag the White House.
This, of course, sent Rachel into schoolgirl convulsions. More over, it gave her the presumed license to use the term "Teabaggers" as much as humanly possible.

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So let's get this clear: the first person to use the term was Rachel Maddow.
Which couldn't be more ironic,
If you have a differing opinion, or believe me to be in error, please post to me and I'll make the correction or add your counter argument to the mix.