Who're you going with, then?" said Ron."Angelina," said Fred promptly, without a trace of embarrassment."What?" said Ron, taken aback. "You've already asked her?""Good point," said Fred. He turned his head and called across the common room, "Oi! Angelina!"Angelina, who had been chatting with Alicia Spinnet near the fire, looked over at him."What?" She called back."Want to come to the ball with me?"Angelina gave Fred a sort of appraising look."All right, then," she said, and she turned back to Alicia and carried on chatting with a bit of a grin on her face."There you go," said Fred to Harry and Ron, "piece of cake.

I thought it sounded a bit like Percy singing... maybe you've got to attack him while he's in the shower, Harry.

The poor things keep calling in those – those pumbles, I think they're called – you know, the ones who mend pipes and things – ""Plumbers?"" – exactly, yes, but of course they're flummoxed.

When in doubt go the library

You’re mental,” said George, trying to push it back at Harry.“No, I’m not,” said Harry. “You take it, and get inventing. It’s for the joke shop.”“He is mental,” Fred said in an almost awed voice. [Goblet of Fire]

I never thought I'd hear myself say it, but safety first!