"Did you see me disarm Hermione, Harry?""Only once"said Hermione stung. "I got you loads more then you got me—""I did not only get you once, I got you at least three times—""Well if you're counting the one where you tripped over your own feet and knocked the wand out of my hand—"
"Harry, don't go picking a row with Malfoy, don't forget, he's a prefect now, he could make life difficult for you...""Wow, I wonder what it'd be like to have a difficult life?"said Harry sarcastically."
"You can laugh! But people used to believe there were no such things as the Blibbering Humdinger or the Crumple-Horned Snorkack!"
"Is it true that you shouted at Professor Umbridge?""Yes.""You called her a liar?""Yes.""You told her He Who Must Not Be Named is back?""Yes.""Have a biscuit, Potter."
"By all means continue destroying my possessions. I daresay I have too many."
"Yeah, Quirrell was a great teacher. There was just that minor drawback of him having Lord Voldemort sticking out of the back of his head!"