In this song, Fiona Apple is taking out her aggressions on a guy who lacks passion, telling him he's a dull tool, which can cut just like a sharp one. Apple is filled with fire and always speaks her mind; any guy that can stand up with her needs to as well.
Apple wrote and performed this song for the Judd Apatow-directed movie This Is 40. Her frequent collaborator, Jon Brion, produced this track as well as penning parts of the score for the film. It was released as the lead single from the soundtrack on November 17, 2012.
This was the first song Apple wrote for a movie. She's not one to write on commission because her songs are so personal.