An Excess of Phlegm

"I suppose you like the way Phlegm says "'Arry", do you?" Who said this?

"Fleur's not stupid, she was good enough to enter the Triwizard Tournament." Who said this?

"It was the same last time he was powerful, people eloping left right and centre..."

"I squeezed it and it - it punched me!"

"It'll be Fred and George's idea of a funny joke, making sure it can't come off."

"Bill told me 'ow Fred and George are very amusing!"

"Knew you'd be top in Defense Against the Dark Arts..."

"Seven O.W.L.s, that's more than Fred and George got together!"

"Only failed Divination and History of Magic, and who cares about them?"

"Well, we're N.E.W.T. students now!"