Harry Potter and His Big Black Magic Stick

Fred and George have the greatest prank idea ever. Oneshot, complete, no pairings, no slash, no bashing, intelligent Dumbledore, winner of the Fan Fiction Creativity Award 69 times in a row, mentioned in J.wling's Top 10 What Have You Done To My Books, mentioned in Michael's Jackson Top 1 Worst Fan Fiction Ever, Order of Merlin (First Class).