Quotes:
"Don't be prat, Neville, that's illegal," said George. "They wouldn't use the Cruciatus Curse on the champions. I thought it sounded a bit like Percy singing... maybe you've got to attack him while he's in the shower, Harry."
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"I've got two Neptunes here," said Harry after a while, frowning down at his piece of parchment, "that can't be right, can it?"
"Aaaaah," said Ron, imitating Professor Trelawney's mystical whisper, "when two Neptunes appear in the sky, it is a sure sign that a midget in glasses is being born, Harry.."
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"Well, I had one that I was playing Quidditch the other night," said Ron, screwing up his face in an effort to remember. "What do you think that means?"
"Probably that you're going to be eaten by a giant marshmallow or something," said Harry, turning the pages of The Dream Oracle without interest.
----
Draco: "You see, I, unlike you, have been made a prefect, which means that I, unlike you, have the power to hand out punishments".
"Yeah," said Harry, "but you, unlike me, are a git."