Bernadette: So where's he taking you?
Amy: Oh, he's coming here. I'm actually making dinner.
Bernadette: Oh, that's a big step.
Amy: It is?
Bernadette: Yeah, you're inviting him into your home. It's intimate. It's where your underpants live.

Bernadette: I had a plan. I kept leaving Dove bar wrappers around to explain any weight gain.
Amy: Where did you get empty Dove bar wrappers?
Bernadette: From all the Dove bars I ate! I'm pregnant! Try to keep up!

Stuart: Oh, so she's good enough for Howard but not for me?
Howard: Yeah.
Bernadette: Yeah. Go have weird relationships with your own mother and cousin. This is his turf.

Leonard: You don't go into science for the money.
Bernadette: Speak for yourself. Last month my company both invented and cured restless eye syndrome. Ka-ching, ya blinky chumps!

Penny: So you have a song stuck in your head. It happens to everybody.
Sheldon: Well, I'm not everybody. I have an eidetic memory. I should be able to remember what song this is, but I can't. Something's wrong with me.
Penny: I told you if we were patient, he'd figure it out for himself.

Bernadette: So, you're really going out with Dave again?
Amy: Why not? He's actually a very nice guy.
Bernadette: But he spent an entire date talking about how much he loves Sheldon.
Amy: That's nothing Sheldon hasn't done before.

Sheldon: I remember the song! It's called "Darlin'" by the Beach Boys! Oh, thank goodness! I'm not crazy! I don't have to take a pigeon as my bride!
Leonard: There goes our shot at him living on the roof.