During the Super Bowl halftime show Sunday, Adam Levine stripped off his tank top, baring his chest to the audience.It was quickly pointed out that in 2004, Janet Jackson was infamously chastised for her breast being exposed during her performance at halftime show, even though her incident was an accidental "wardrobe malfunction," and Levine intentionally removed his shirt. Some people joked they were simply troubled by the presence of nipples in general:The main argument was focused on the double standard between men's and women's bodies: