Black White Hill

Alright, listen up, you chucklehead. You posted a riddle, see? It asks what goes black, white, black, white down a hill, and the answer you came up with is a fat nun. Why is she fat? Why does it matter? What is it? It's her habit, it is black and white, she's rolling down a hill. That's it. You thought you were being clever with that? You should be ashamed.