My Occidental College colleague, politics professor Caroline Heldman, snapped this photograph of a billboard on an L.A. freeway. It suggests that one may celebrate Black History Month by calling 1-800-GET-THIN. The billboard is another stunning example of the trivialization of black history by companies using it only as an excuse to market their product or service.Lisa Wade, PhD is an Associate Professor at Tulane University. She is the author of American Hookup, a book about college sexual culture; a textbook about gender; and a forthcoming introductory text: Terrible Magnificent Sociology. You can follow her on Twitter and Instagram.