There’s a great routine by Bill Cosby (ugh) talking about the first time he met Ray Charles. He said he knocked on the door to his hotel room, and Ray told him to come in. It was pitch black dark. Cosby said, “Ray, what are you doing?” He said “Shaving”. Cosby then says, “Ray, why in the world”–a part of his mind says, no! don’t say it, but he says it anyway–“are you shaving in the dark?!”