Sample tweet: "Drowning not waving. No, wait waving. Sorry, I thought you were someone else for a sec."
Colson Whitehead is the cool guy who lives downstairs from you: urbane, witty, intelligent and thoughtful enough to let you into his life once in a while. The author of novels including Sag Harbor and John Henry Days tweets regularly about author stuff (writing, reading, book touring) but his stock-in-trade is the 140-character zinger ("When I buy a stairway to Heaven, I'm going to put it on a credit card. I have the kind where you earn miles").