“A Few Words About Breasts,” from May 1972, is Nora Ephron’s comic lament about how her late onset of puberty and earliest sexual experiences gave her a lifelong obsession with her breasts. Jessi Klein, head writer for “Inside Amy Schumer,” joins David Brancaccio to discuss Ephron’s famous Esquire story and its lasting influence on the way women perceive and voice themselves in writing and comedy.