Sheldon: I thought I was getting better at it, but clearly I'm not.
Amy: Yes, you are. There have definitely been days when I was sad and you could tell.
Sheldon: Yeah, but that's shooting fish in a barrel. You're kind of a sad sack. I'm sorry, I shouldn't have said that. I'm just upset.
Amy: No, see, right there, you knew you hurt my feelings. And I'm proud of you - for reasons I'm sure have something to do with my father.