That’s what I was told on this thread.. I hadn’t researched it to confirm.
Michelle coined it in her book Unhinged: Exposing Liberals Gone Wild (Hardcover) by Michelle Malkin (Author)
http://www.amazon.com/Unhinged-Exposing-Liberals-Gone-Wild/dp/0895260301/ref=pd_bbs_sr_2?ie=UTF8&s=books&qid=1195576953&sr=8-2