Howard: You know, once we get the house back to ourselves, we can be romantic in any room we want.
Bernadette: Great. I can finally show you where the laundry room is.

Stuart: Boy, who would've thought when you asked me to move in and help take care of your mom, I'd still be here two years later?
Howard: No one.
Bernadette: Nobody thought that.

Leonard: Thank you for seeing me on such short notice.
Dr. Gallo: Ah, it's my pleasure. I'm curious, are you related to Dr. Beverly Hofstadter?
Leonard: Uh, she's my mother. You know her?
Dr. Gallo: No, not personally, but I have read all of her books.
Leonard: Well, then you know her better than I do.
Dr. Gallo: Well, I'm not so sure about that. But I can tell you I do not agree with her theories on child rearing at all.
Leonard: Really? Any chance you find them cold, cruel and unsuitable for innocent little boys who just want to be happy?
Dr. Gallo: Well, I didn't want to say it-
Leonard: No, no, say it. Sing it. Rent a plane, write it in the sky.

Raj: Yeah, okay, whatever it takes to keep you busy for a few hours.
Sheldon: Found one.
Raj: No, you didn't. There are millions of data points there.
Sheldon: But, look, an optical transient.
Raj: Yeah, maybe that is something. How did you find that?
Sheldon: It wasn't difficult. You know how when you see prime numbers, they appear red, but when they're twin primes, they're pink and smell like gasoline?
Raj: No.
Sheldon: Oh. I guess I'm a special boy. You know, sometimes when a boy is special, he gets a Fudgsicle. Which, by the way, tastes like the speed of light.

Sheldon: What are you doing?
Raj: Uh, making sure the telescope's camera is white-field balanced.
Sheldon: Hmm. What are you doing now?
Raj: Still making sure the telescope's camera is white-field balanced.
Sheldon: Oh, I see. How about now?
Raj: Now I'm making sure the telescope's camera is white-field balanced and wishing you had a coloring book.

Sheldon: Well, I can be helpful. Give me something to do. You know, my father took me to work once, and in ten minutes I figured out who'd been stealing from the cash register.
It was my father. Yeah, Dad lost his job, but Mr. Hinckley gave me a Fudgsicle.

Raj: Fine, you want something to do? There's about six months of data on this hard drive.
Why don't you go through it and see if you can spot any patterns or anomalies.
Sheldon: Yep, I'm on it. Hey, look at that! An Indian guy outsourcing a computer job to a white fella.

Stuart: (from outside the room) You guys got a minute, or are you still cuddling?
Howard: What is it, Stuart?
Stuart: Can I come in?
Howard: Hang on. (quietly) Should I send him away?
Bernadette: No, it's okay.
Stuart: (from outside the room) Thanks, Bernie.

Stuart: Uh, well, I know the remodel is coming up, so I thought I'd make it easy on you guys and find my own place.
Howard: Wow, I thought I was done getting lucky tonight.

Bernadette: So, when are you thinking of moving?
Stuart: Uh, actually, I already found an apartment, so in a couple of days.
Bernadette: Oh, okay. Sorry to see you go?

Stuart: Hmm. (looking around at the room)
Howard: What?
Stuart: I just have never been in this room while you're awake.

Penny: You could talk to her, and maybe if it comes up, you could ask if she's heard about the drug.
Leonard: What if I get caught?
Raj: Fear of failure!
Howard: Lack of confidence!
Sheldon: Kind of a wuss!

Leonard: Fine, I'll do it. But not because of them, because I love you.
Penny: Thank you.
Raj: Pushover.
Howard: Spineless.
Sheldon: Still hasn't bought milk even though I told him two days ago!

Bernadette: I just wish Stuart wasn't around so we didn't have to be so quiet.
Howard: I know. It's not like he returns the favor when he watches his Japanese porn cartoons.

Leonard: How was your day?
Penny: Oh, not good. Still couldn't get in to see Dr. Gallo.
Sheldon: A doctor? Well, I hope you're not contagious. I've got a weekend in the telescope room I've been excited about for almost three minutes.