I love the film - Ferris Bueller's Day Off. In one scene, Ferris' sister (Jeanie) is at the police station, talking to a boy about her brother, who always gets away with skipping school. Here's the dialogue:

 

JEANIE
I went home to confirm that the shithead was ditching school and a guy broke into the house and I called the cops and they picked me up for making a phoney phone call.

BOY
What do you care if your brother ditches school?

(Jeanie stares at the boy.)

JEANIE
Why should he get to ditch school when everybody else has to go?

BOY
You could ditch.

JEANIE
I'd get caught.

BOY
So, you're pissed at him because he ditches and doesn't get caught?

JEANIE
Basically.

(The boy nods knowingly.)

BOY
Then your problem is you.

JEANIE
Excuse me?

BOY
Excuse you. You oughta spend a little more time dealing with yourself, and a little less time worrying about what your brother does. It's just an opinion. Ferris Beuller's Day Off Script