Barbra Streisand made a boo-boo and she knows it. The diva admits that at Sunday's Democratic Party fundraiser, she mistakenly attributed a quote to William Shakespeare. The passage, which began, "Beware the leader who bangs the drums of war in order to whip the citizenry into a patriotic fervor, for patriotism is indeed a double-edged sword," was intended as a slam against President Bush. So, where did it come from? Apparently, the Internet. "No record of this quote has been found prior to its appearance on the Internet in late 2001," report the urban legend investigators at Snopes.com. In a statement, Babs responded, "The authorship of this is important, but it doesn't detract from the fact that the words themselves are powerful and true and beautifully written." Still, it's all rather embarrassing.