Fox NewsTina Fey's impression of Sarah Palin has left such an indelible impression on the American consciousness that even Fox News can't tell the two apart.

On Sunday, while Fox News anchor Shannon Bream was teasing an interview with the former Alaska governor, Fox flashed a graphic of Fey doing her Palin impression on 'Saturday Night Live.'

The visual blunder came on a day when Palin was busy defending her unique historical interpretation of Paul Revere's ride, which may have Fey reprising her famous impression sooner rather than later.