Watch Gwen Stefani, Stephen Colbert Argue About 'Bananas' Spelling

Gwen Stefani served as musical guest on the Friday night episode of Late Show With Stephen Colbert, where the singer entered into a backstage argument with the host about the spelling of the word ‘bananas’ in the song “Hollaback Girl.” Colbert first informed Stefani that the 2005 single was banned from Late…