The trashy calendar was once a hallowed tradition, treated as the one piece of art needed to adorn every garage, workspace, or "man cave" (in its '90s heyday). Sports Illustrated launched an industry based on the notion of semi-artful photos of scantily clad women, and Pirelli, the tire company, raised the calendar concept to an honest-to-god art form (which is why their current calendar doesn't make this list). Turn the page to 2017: The trashy calendar has become an odd duck — bringing a sort of creepy, pseudo-masculine pleasure that is best enjoyed ironically or as a gag gift. Or maybe we're missing the point. Judge for yourself.