Denise Valtr

“Yeah, Montague tried to do us during break," said George.

"What do you mean, 'tried'?" said Ron quickly.

"He never managed to get all the words out," said Fred, "due to the fact that we forced him headfirst into that Vanishing Cabinet on the first floor.”
― J.K. Rowling, Harry Potter and the Order of the Phoenix

“I believe your friends Misters Fred and George Weasley were responsible for trying to send you a toilet seat. No doubt they thought it would amuse you.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone

“Er — have the Bludgers ever killed anyone?” Harry asked, hoping he sounded offhand.
“Never at Hogwarts. We’ve had a couple of broken jaws but nothing worse than that. You don’t have to worry about the Quaffle or the Bludgers —”
“— unless they crack my head open.”
“Don’t worry, the Weasleys are more than a match for the Bludgers — I mean, they’re like a pair of human Bludgers themselves.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone

“Oh it was my pleasure, dears,” said Mrs. Weasley. “I’d invite you for Christmas, but … well, I expect you’re all going to want to stay at Hogwarts, what with … one thing and another.” “Mum!” said Ron irritably. “What d’you three know that we don’t?” “You’ll find out this evening, I expect,” said Mrs. Weasley, smiling. “It’s going to be very exciting — mind you, I’m very glad they’ve changed the rules —” “What rules?” said Harry, Ron, Fred, and George together. “I’m sure Professor Dumbledore will tell you. … Now, behave, won’t you? Won’t you, Fred? And you, George?” The pistons hissed loudly and the train began to move. “Tell us what’s happening at Hogwarts!” Fred bellowed out of the window as Mrs. Weasley, Bill, and Charlie sped away from them. “What rules are they changing?” But Mrs. Weasley only smiled and waved.”
― J.K. Rowling, Harry Potter and the Goblet of Fire