After Britney filed for divorce from Kevin Federline-and when she wasn't busy commuting to Starbucks-the young mother of two spent a lot of time being driven to and from nightclubs. And, as we learned with every car exit, she rarely wore panties. (You've either tried to block this from your memory or trolled the internet for photographic evidence.) Years later, while onstage at a concert, she blurted out a phrase mid-wardrobe-malfunction that summed up those limo exits perfectly: “My p*ssy's hangin' out.”