Penny: He knows he doesn't live here anymore, right?
Leonard: Maybe he's experiencing memory loss because he took...
Penny: Flaxitrite!
Leonard: Yeah.

Leonard: Uh, Sheldon, what are you doing?
Sheldon: Oh, I was just checking in on my old room to see what you've done with it.
Penny: Why?
Sheldon: Well, I could use a place to work in the evenings, and-
Leonard: No.
Sheldon: Well, it's just that there's not a lot of space in our apartment-
Penny: No.
Sheldon: Well, and I feel like Amy's been having-
Leonard: No.
Sheldon: And since you're not-
Penny: No.
Sheldon: It's-
Leonard: No.
Penny: (Sheldon starts to speak) No.
Leonard: That is our room now, and we're gonna turn it into a gym.
Sheldon: Do you really expect me to believe that?
Leonard: No.
Penny: No.

Raj: So I guess what's bugging me is that they only broke up 13 days ago, and now I'm dating her. So, am I, like, the good guy in my movie, or the bad guy in their movie?
Bernadette: Pretty sure you're the weird friend in our movie.

Raj: I like her, okay? I just, I-I don't know how I feel about being the third wheel in a relationship.
Howard: Says the guy in my bed with my wife.

Leonard: (on the phone) The answer is still no. You can say we wouldn't know you're here, but we'd know. Because you'd be here! (groans)
Penny: So, who was that?

Sheldon: I can't believe you hung up on me!
Leonard: What the hell? What are you doing here?
Sheldon: I am proving you wrong. I've been working back there for hours. You had no idea.

Penny: Okay, look, you have an office at work. Why don't you go there?
Sheldon: I can't go to the office every time I have a brilliant thought. I'd basically be living there.
Leonard: Sounds good, do that.

Sheldon: I need somewhere to work in the evenings. You have a space you aren't using. Just take a look at my proposal.
Penny: (groans) What is this?
Sheldon: A rental agreement. I will only use the room for work. I won't sleep here, I won't eat your food, I won't even use your bathroom.
Leonard: So you can just walk in any time of the day or night?
Penny: Well, he does that now. At least this way we'll get paid.

Raj: I am Dr. Rajesh Koothrappali, and thank you for taking a walk with me ... ... through the stars.
Howard: I-I think that one was too long.
Raj: Yeah, you're right. I totally felt it.

Raj: Can I help you?
Oliver: Which one of you is Rajesh Koothrappali?
Howard: Really? You're not sure which one of us is Rajesh Koothrappali?
Oliver: I am. I was just trying not to be racist.

Raj: It's gonna be okay.
Oliver: How is it gonna be okay? You're sleeping with my wife.
Raj: I mean, besides that.

Oliver: I'm sorry. I shouldn't have come here. I guess I just wanted to see who she replaced me with.
Raj: Don't say that. What you two had was special. No one can replace you.
Oliver: Did she say that?
Raj: No.

Raj: Look, if it makes you feel any better, I barely know her.
Oliver: And she had sex with you?
Raj: Nell tells me you're a fireman. What's that like?

Raj: He was best friends with her older brother, but he didn't even notice her. And then years afterward, they randomly bumped into each other at the DMV. Two hours later, they were in love. You can really see the sparkle in his license photo.

Bernadette: He told you all this at the planetarium?
Raj: No, no, we went to House of Pies. He got banana cream. I got coconut. We did halfsies.
Howard: You did pie halfsies with another man?
Bernadette: You mean other than you?
Howard: Yeah.