Our 44th president has a very vivid vocabulary. Obama famously called Kanye West a "jackass," and on the audiobook version of his autobiography, Dreams From My Father, you can hear the future president mimicking an old high-school friend who evidently knew his Richard Pryor: "You know that guy ain't shit. Sorry-ass motherfucker ain't got nothing on me." But it was in the pages of Rolling Stone that Obama really drew the ire of the pious, calling opponent Mitt Romney a "bullshitter." Sometimes the dirty word is the most precise.