Mandi B. sent in this straightforward example of the way that women are positioned as commodities in advertising. The email ad for Spirit Airlines reads “Trade Up for a Better Flight Awards Card” and illustrates that trade with a new car, a younger look, and a lady in red. What does the lady have to do with it? Absolutely nothing. But it works because we’re accustomed to thinking of sexy women as prizes for men’s success.Lisa Wade, PhD is a professor at Occidental College. She is the author of American Hookup, a book about college sexual culture, and a textbook about gender. You can follow her on Twitter, Facebook, and Instagram.