I hope it's that old. I would laugh if she still spelled it "merci bo cow."
I found that on Sav's Photobucket and did a quick search here but I couldn't find it. The filename was "tumblr_928937p82" or something, so whoever posted it may know more about it.
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"Or maybe she's a witch, who transcends the boundaries of time and space, and traveled back to 1981, for her own reference."