Sheldon: So, Dr. Wolcott, in your letter, you said you had a new mathematical approach that would help me conceptualize the dimensions in string theory?
Doctor Wolcott: Uh, yes, yes, yes, yes. But before we get started, I am going to need to collect everybody's phone. Yeah.
Sheldon: Oh.
Leonard: Why?
Doctor Wolcott: Because they're little listening devices, aren't they? Yes, for people to spy on you and steal your work.
Howard: Yeah, what happened to the good old days where if someone wanted to steal your work, they had to hire a prostitute to seduce you?
Doctor Wolcott: Who told you about that?
Howard: Just making a joke.
Doctor Wolcott: Yeah, it's not funny when it happens.

Sheldon: Well, of course I'm worried about you, I want you to be safe.
Amy: And I want you to be safe.
Sheldon: I will be. I'll have my friends with me. If anything should go wrong, I can use them as human shields.

Sheldon: *knock knock knock* Dr. Wolcott? *knock knock knock* Dr. Wolcott? *knock knock knock* Dr. Wolcott? [sound of many locks clacking]
Howard: That's a lot of locks.
Leonard: Mm. That was a lot of knocks, they were made for each other.

Sheldon: Do you really know how to Riverdance?
Amy: You tell me.
Sheldon: I'm the only man you do that for.