Hillary was probably hoping the question her campaign raised about Mr. Obama Plagurizing Mass. Gov. Duval Patrick's lines wouldn't come up. It forced her into an attack, to defend something her campaign decided to do.

"If your candidacy is going to be about words, they should be your own words. And lifting some passages out of somebody else's speeches is not change you can believe it. It's change you can Xerox." — Hillary Clinton

That was a great line, but it backfired, as most of her heavy attacks have done. It received a number of boos and even some supporters of hers in the audience cringed.

Still, it was funny.

But for the record, to plagiarize, you have to take copy or words from someone without their knowledge, and it must be exact. Mr. Obama used Mr. Patrick's lines with his permission and insistance and he paraphrased them during the speech.