Play Quidditch at all?”
“No,” Harry said again, wondering what on earth Quidditch could be.
“I do — Father says it’s a crime if I’m not picked to play for my House, and I must say, I agree. Know what House you’ll be in yet?”
“No,” said Harry, feeling more stupid by the minute.
“Well, no one really knows until they get there, do they, but I know I’ll be in Slytherin, all our family have been — imagine being in Hufflepuff, I think I’d leave, wouldn’t you?

Autore: J.K. Rowling