Inspiration for these columns comes from all sorts of places. My research, my friends, my students, and yes, of course, you, my dear and diligent readers. But there’s also the vast storehouse of wacky words that can be found in popular culture. The impetus for this week’s word, for example, comes from ABC’s new fall show, “Selfie.” Yes, yes, I know: perhaps not the height of culture. But Shakespeare was middlebrow once, in his way, and so I present to you “coxcomb,” deployed as an insult in the Pygmalion-style plot of the show.