Rachel Maddow unleashed a monster of an attack on Mitt Romney during her Wednesday show, calling him a liar over and over and over again.

Romney's senior adviser Eric Ferhnstrom got into trouble on Wednesday when he said that the campaign could reset itself during the general election, "like an Etch-a-Sketch." Romney's rivals pounced, saying that the remark was prime evidence of his serial flip-flopping.

Maddow used the gaffe to take a sledgehammer to Romney.