Meredith: (to Lexie) You're not crazy. You're a Grey.
Arizona: Mark stares at my boobs when we talk. He starts at my face, but somewhere along the way he gets distracted and ends up at my boobs. I love guys. I love them. But I've tried my whole life to avoid the boob staring guy. Biology even helped me by making me gay. But now, my girlfriend's best friend is that guy. And I don't think I need to apologize for the fact that the only person I want staring at my boobs is you.
Callie: Boobs, really, you're making this about boobs?
Arizona: He stares at them.
Callie: 'Cause their good boobs!