Kaya

“Oh, of course," said Ron, clapping a hand to his forehead. "I forgot we'll be hunting down Voldemort in a mobile library.”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“If you think I'm going to let six people risk their lives - !'
'because it's the first time for all of us,' said Ron.
'This is different, pretending to be me -'
'Well, none of us really fancy it, Harry,' said Fred earnestly. 'Imagine if something went wrong and we were stuck as specky, scrawny gits forever.'
Harry did not smile.
'You can't do it if I don't cooperate, you need me to give you some hair.'
'Well, that's the plan scuppered,' said George. 'Obviously there's no chance at all of us getting a bit of your hair unless you cooperate.'
'Yeah, thirteen of us against one bloke who's not allowed to use magic; we've got no chance,' said Fred.”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“Well, you can't break an Unbreakable Vow...."
"I'd worked that much out for myself, funnily enough. What happens if you break it, then?"
"You die," said Ron simply. "Fred and George tried to get me to make one when I was about five. I nearly did too, I was holding hands with Fred and everything when Dad found us. He went mental," said Ron, with a reminiscent gleam in his eyes. "Only time I've ever seen Dad as angry as Mum. Fred reckons his left buttock has never been the same since."
“Yeah, well, passing over Fred’s left buttock —”
"I beg your pardon?" said Fred's voice as the twins entered the kitchen.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“George,” said Fred, “I think we’ve outgrown full-time education.”
“Yeah, I’ve been feeling that way myself,” said George lightly.”
― J.K. Rowling, Harry Potter and the Order of the Phoenix