Mrs. Weasley: What are you two doing?
Fred: Homework...
Mrs. Weasley: It's the holidays silly...
George: Uh, yea. We've left it a bit late.
Mrs. Weasley: This wouldn't happen to be anything about Weasley's Wizard Wheezes would it?
Fred: Now Mum, how would you feel if the Hogwarts express crashed tomorrow, and George and I died, and the last thing we heard from you was an unfounded accusation?
Gotta love Fred... but I still like George more :)