Answer: "It's over. Go home--go."
When Ferris pulls Cameron out of the pool, Cameron says, 'Ferris Bueller, you're my hero.' Although 'Save Ferris' was seen throughout the movie, it was not the last line. After Ferris's parents leave his room, he speaks to the audience about living life to the fullest. Many of you may have thought this was the correct answer, but due to John Hughes brilliant directing, he continues the movie while the credits are running, leaving the audience in their seats waiting to see what happens. He gets us to stay there until Ferris comes back and tells us to go home.