Beverly Hofstadter: What's going on?
Sheldon: Well, our friend Raj moved into my old room, and it's brought up a lot of negative feelings for me.
Beverly Hofstadter: Mm. Well, what do you think the loss of your room represents?
Sheldon: Beverly, you know I hold you in high esteem. Can we skip the part where you pretend not to know the answer, and get to the part where you tell me the answer?
Beverly Hofstadter: Very well, but, uh, if you don't mind, I'd still like to pause for effect.

Leonard: Look, just because we took our friend in does not mean that Penny and I are afraid to be alone.
Penny: Yeah, this is a special circumstance.
Beverly Hofstadter: Sheldon mentioned you tried to get your brother to live with you, as well.
Penny: Yeah, well, a circumstance can happen twice and still be special.

Beverly Hofstadter: Do you agree with that?
Leonard: Well, now that you point it out-
Penny: Are you kidding me?
Leonard: We do seem to keep finding roommates.
Penny: Now you're taking her side?
Beverly Hofstadter: Dear, I would never come between you and Leonard. That's for your parade of roommates to do.

Stuart: And if my heart stops, just let me go.

Raj: Can I just stay in the garage?
Bernadette: Don't do that. We'll make up the couch for you and figure out something in the morning.
Raj: Thank you.
Stuart: Come on, I'll get you some sheets. Then I'll see if I can beat my high score on the blood pressure machine.

Howard: Never should've had all these kids so close together.

Raj: I didn't think this is where my life would be.
Stuart: Me, either. I'm in a bedroom and you're on a couch. I'm actually winning.

Raj: Well, no offense, but I didn't go to art school. I have a PhD in astrophysics.
Stuart: Oh, great, it'll be easier for you to look up at the stars without a roof over your head.

Leonard: Did you know Raj moved out last night?
Penny: What? Why?
Leonard: "Leonard and Penny, I'm sorry for all the trouble I've caused. I went to stay at Howard's. P.S. Cinnamon's with me, but if you feel like messing with Sheldon, tell him she's loose in the building."

Leonard: Should we go bring him back?
Penny: Well, you're the one worried having someone live with us is a sign of problems.
Leonard: Oh, that was just because my mother got in my head. It's like being possessed, but instead of Satan, it's -- Actually, it's the same thing.

Leonard: You are not a burden, and we want you to come back and stay with us.
Raj: But I also upset Sheldon, and he's not gonna want to come over if I'm there.
Penny: More reasons for you to stay.

Stuart: (coming into the living room) Halley's fine.
Bernadette: You know she's at my parents' house, right?
Stuart: And she's having the time of her life.

Sheldon: Things have been going really well with the infinite resistance gyroscope.
Amy: That's great. How so?
Sheldon: Oh, the project is classified. I can't tell you. Oh, I suppose I could redact the classified parts. All right, um, I came up with an elegant solution to the (honks horn). I used the (honks horn) And then I (honks horn) And that did it. (honks horn)

Raj: You know, downward-facing dog comes from the Sanskrit phrase adho mukha shvanasana.
Penny: Oh, that's beautiful. What does it mean?
Raj: "Downward-facing dog."
Penny: Yeah, I guess they don't have Sanskrit for "butts up and heads down."
Raj: Hey, we wrote the Kama Sutra. If it involves butts, there's a word for it.

Leonard: I thought we were getting breakfast before work.
Penny: Oh, right, sorry.
Raj: It's my fault. I asked Penny to do yoga with me.
Penny: If you want, I can get ready in five minutes.
Leonard: (chuckles) It's cute that you think that.