"What was that noise you just made?"

"I sporfled"

"You what?"

"Haven't you heard that word yet? It originally…"

"No. It's not a word. Even if it does sound amusing in a very you sort of way."

"I was saying, Amy. It originated on the banks of the Nile around 349 BC, and meant 'to be eaten by a particularly hungry crocodile very suddenly and dramatically'. It's changed meaning significantly since then."

"… Huh?"

"If you stopped setting fire to my fezzes, you'd listen every now and again."