My son Ian was perusing the book 1001 Paintings You must See Before You Die and he stumbled upon Courbet's infamous work innocuously entitled "The Origin of the World" . . . which is a rather graphic close-up portrait of a woman's genitalia, a rather hirsute woman's genitalia . . . but luckily I wasn't home, and so he asked my wife about the picture and she explained to him what it was and he replied: "Oh, I thought it was a black hole."