Fred and George Cause Chaos in the Gryffindor Common Room
Pages 130-131
Back in the Gryffindor common room, Harry considers telling Ron and Hermione about Filch's Kwikspell course, but the conversation is derailed when Fred and George Weasley feed a salamander a Filibuster firework. The resulting spectacle of sparks and chaos drives all thoughts of Filch out of Harry's mind.
