Big Bang Theory Quote
Sheldon: Didn't you recently state that you and I are friends?
Penny: Yes, Sheldon. We are friends.
Sheldon: Then I hereby invoke what I'm given to understand is an integral part of the implied covenant of friendship.
Penny: ?
Sheldon: The favor.
Penny: Oh, dear God!
Sheldon: I'm sorry, I didn't realize I was interrupting your morning prayers.
Quote from S02E05 - The Euclid Alternative