Tyrion Lannister: Not going well, is it?
Jaime Lannister: You're going to be found guilty.
Tyrion Lannister: Oh! You think so?
Jaime Lannister: When you are, you need to enter a formal plea for mercy and asked to be sent to the Wall. Father's agreed to it. He'll spare your life and allow you to join the Night's Watch.
Tyrion Lannister: Ned Stark was promised the same thing, and we both know how that turned out.
Jaime Lannister: My father isn't Joffrey. He'll keep his word.
Tyrion Lannister: How do you know?
Jaime Lannister: Do you trust me?
Jaime Lannister: Keep your mouth shut, no more outbursts. This will all be over soon.