What's black and white, black and white, black and white...?
A dead nun rolling down a hill.
Alright listen up, dummy. So, you know how nuns wear black and white? And you know how if something rolls down a hill, it's gonna be black and white, then black and white, over and over? Well, a dead nun rolling down a hill is black and white, black and white, black and white. I can't believe I have to explain this to you. Did you fail preschool?