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Conan O'Brien just got served ... by Madeleine Albright

The comedian should have thought twice before getting into a Twitter war with Madeleine Albright, America's first female secretary of state.
Former Secretary of State Madeleine Albright attends the third day of the Clinton Global Initiative's 10th Annual Meeting at the Sheraton New York Hotel & Towers on Sept. 23, 2014 in New York City.
Former Secretary of State Madeleine Albright attends the third day of the Clinton Global Initiative's 10th Annual Meeting at the Sheraton New York Hotel & Towers on Sept. 23, 2014 in New York City.

When Conan O'Brien took to Twitter on Thursday night to announce his Halloween costume, he didn't realize he'd be setting off a social media war for the ages.

Hopefully, as O'Brien implies, this feud won't flame out any time soon. Can he outwit former Secretary of State Madeleine Albright?