A mythical character, much like bigfoot. Originally made up by the democratic party in an attempt to make republicans look crazy. Soon afterward they realized they were doing a good enough job of that themselves, they tried to eliminate her but McCain had already chosen her as his vice presidential canidate. Played on the Fox sitcom Fox News by Tina Fey. Twitter account is run by Jimmy Helms, a 13 year old kid from Chicago.
Person 1: Dude! we went camping this weekend and i think we saw Sarah Palin!
Person 2: Dude, everyone knows she is just an urban legend.