Howard: It's pretty late. You think I've got time to run some more simulations on the cooling system?
Leonard: Sure, I'm still figuring out the thermo-acoustic expander.
Sheldon: Oh, while you do that I am going to pump cerebral spinal fluid through my brain cells to remove the metabolic by-products of the day's thoughts.
Howard: What?
Sheldon: It's called sleep and it's my bedtime. Nighty-night, y'all.

Howard: Hey, hey, hey, you're not going anywhere.
Leonard: We only have two months to deliver this to the Air Force because of you.
Sheldon: (yawning) I know, I was there.
Howard: Well, wake up! We're gonna put in a lot of late nights.
Sheldon: How late?
Howard: Well, I don't know, midnight, one.
Sheldon: One o'clock? I'm not a raccoon.

Howard: If you're tired, have some coffee.
Sheldon: What? You have some coffee.
Howard: I am having coffee.
Sheldon: And look how irritable it's making you!

Sheldon: I don't think I can go much longer.
Leonard: It's been three and a half minutes, wake up!

Sheldon: I never realized this building was classified.
Howard: Maybe that's because it's classified.

Leonard: Wish we weren't so far from my parking space.
Sheldon: The way you put away those lemon bars, perhaps that's a good thing.
Leonard: I'd like to reinstate the you-not-talking rule.
Sheldon: Why? It clearly doesn't work.

Raj: Wow. You're going off to work with the military, leaving me behind. Now I know how all those army wives feel.
Howard: Would you stop? We're just gonna be on the other side of campus.
Raj: And right here. (holding his hand on his chest)
Howard: You are a deeply silly man.
Raj: (To Leonard) He is so afraid of his feelings.

Bernadette: I just wanted to apologize. I know what you did was an accident.
Penny: Oh, thank you, and I'm sorry I lied about it.
Bernadette: For what it's worth, you're a great liar.
Penny: Oh, that's what Amy said.

Penny: You threatened to sue?
Bernadette: Hey, I learned a long time ago, when you're four feet eleven and eye level with every guy's crotch, that's where you punch.
Penny: That's funny. I learned something totally different.

Bernadette: Do you know what? It's just a research project. The most important job in the world is gonna be raising this child. It's all I need to give my life meaning.
Penny: Oh, that's so beautiful.
Bernadette: You believe me? Oh, good. Eleven more chumps like you, I'll have the jury eating out of my hand.

Penny: Something happen at the meeting?
Sheldon: They made me promise I wouldn't talk.
Penny: And you talked?
Sheldon: Well, now, see? You knew what was gonna happen. Why didn't they?

Penny: Well, if it makes you feel any better, Bernadette's mad at me, too.
Sheldon: Mmm. If it makes you feel any better, a parasitoid wasp known as Oobius depressus has been rediscovered after 101 years of presumed extinction.
Penny: Why would that make me feel better?
Sheldon: Why would your Bernadette thing make me feel better? At least mine was educational.

Sheldon: Look, I'm sorry. Tell me why Bernadette is upset with you.
Penny: Well, I told people at work that she's pregnant. She wasn't ready for them to know.
Sheldon: Why would you do that?
Penny: Well, it just slipped out. I feel terrible.
Sheldon: See, that's exactly what happened to me, except that I said it on purpose, and I have no regrets.

Raj: Is it even possible to get this done in two months?
Howard: Well, maybe. I don't know. We'll have to work twelve hours a day, seven days a week.
Leonard: Which means I won't be able to make Penny breakfast every day, and she'll realize my brioche French toast was the only thing keeping her in the marriage.
Howard: I love your French toast.
Leonard: Oh, thanks, man.

Raj: So, why did you guys even agree to the deadline?
Howard: We didn't. Sheldon did.
Raj: And you just let him?
Leonard: Well, the colonel said it was for the good of the country, and the funding is substantial.
Howard: No, but mostly, there was an awkward pause, and I broke it by saying, "Okay."