Twin: "I'm not Fred, I'm George. Honestly, woman, you call yourself our mother? Can't you tell I'm George"
Mrs Weasley: "Sorry, George, dear."
Twin: "Only joking, I am Fred."
(Twins Fred and George have letters on the front of their knitted Christmas sweaters. Ron doesn't)
George: You haven't got a letter on yours, Ron. I suppose Mum thinks you don't forget your name. But we're not stupid. We know our names are Gred and Forge.