Donnie Corker, better known as Dirtwoman, died this week, and the news of his passing brought to mind the character of Otis, the town drunk on “The Andy Griffith Show.” Like Otis, Corker was crude and transgressive — and incorrigible. He was also essentially harmless. He lived life on his own terms, no matter what anyone thought of him, which is more than many people can say. In doing so he elevated, over time, what they did think of him. He was not anyone’s idea of a role model; people who push boundaries invite hostility and judgment. But they also expand the cultural space — making more room for others to be their own authentic selves as well. The result is a richer, more intricate social tapestry. And that is not such a bad thing at all.