Tarradiddle

"I dare say my nephew told you a good many tarradiddles in his time. Oh, yes, a good many, eh? He was always a liar. What, now, did he say of me? Tell me, now."

Of course, that's all taradiddle; he lies like a horse, for I know this Dushkin, he is a pawnbroker and a receiver of stolen goods […]

‘We haven’t got time to listen to more taradiddles, I’m afraid, Dumbledore. I want this dealt with quickly –’