Cameron: Ferris, my father loves this car more than life itself. Ferris: A man with priorities so far out of whack doesn't deserve such a fine automobile. Cameron: No. No! Apparently, you don't understand! Ferris: Wow. Cameron: Ferris, he never drives it! He just rubs it with a diaper!

Ferris is deaf to Cameron's pleadings. He has his mind set on driving Cameron's dad's Ferrari.