from Sputnik Sweetheart
"I'm always amazed how good you are at explaining things."
"That's my job," I said. My words seemed somehow flat and stale. "You should try being an elementary-school teacher sometime. You'd never imagine the kind of questions I get. 'Why isn't the world square?' 'Why do squids have ten arms and not eight?' I've learned to come up with an answer to just about everything."
"You must be a great teacher."
"I wonder," I said. I really did wonder.
"By the way, why do squids have ten arms and not eight?"