It's Rowling's world, I'm just playing in it.
--
"You have no idea what you're doing, do you?"
"Is it your bloody life's goal to drive me insane? Shut up, or we're never going to get this done.
"I'll shut up when you show some semblance of sanity. Molly's used to us, you really think she won't check he pillows before she and Arthur go to bed?"
"You overestimate our sister. Now, shut it and give me that..
"Wait. Is that a..."
"AGHHHH!"
From her closet, Molly smiled as her brothers fled, the blanket they mistook for a Leithfold going limp. "'Overestimate our sister', my arse," she muttered gleefully.