Leonard: Okay. Why would I go to a drug intervention for your cousin?
Sheldon: Ah, because it's in Long Beach, and I don't drive.
Leonard: We're going to Long Beach?
Sheldon: No, of course not. Theres no cousin Leo, theres no intervention. Focus, Leonard.

Penny: Thanks. I just wanted to come by and wish you guys luck with your symposium.
Leonard: Oh, well, thank you.
Penny: You know, I got to tell you, a lot of friends would let their friend go alone, but that's not who you are. You are the kind of guy who stands by a friend when ... when he has a symposium to go to.
Leonard: I don't know what to say.

Sheldon: No. We're going with middle child and a generic predisposition to inadequate serotonin production.
Toby: Swell, how do I play genetic predisposition?
Sheldon: Sub-textually, of course.

Penny: Hi. How did the intervention go?
Sheldon: Unfortunately, we weren't able to convince him to go to rehab.
Penny: Well, based on what you told me, I'm not surprised.

Penny: Hey, do you want to come over to my place, have coffee?
Leonard: Sounds good.
Penny: I have a video of me singing last night. Do you want to see it?
Leonard: Gee, why wouldn't I?
Penny: This is even better than you coming to the showcase, because now I get to watch you watch me.
Leonard: Yeah. Funny how things work out.

Leonard: What the hell are you doing?
Sheldon: I'm making petri dishes to grow throat cultures.
Leonard: With lime jello?
Sheldon: I need a growth medium, and someone polished off the apricot yogurt. Here, swab my throat.

Penny: Sheldon, what are you doing here?
Sheldon: I'm sick, thank you very much.
Penny: How could you have gotten it from me? I'm not sick.
Sheldon: You're a carrier. All these people here are doomed. You're doomed!

Penny: Okay, what kind of soup do you want?
Sheldon: Well, my mother used to make me this split pea with little frankfurter slices and these home made croûtons.
Penny: We have Chicken Tortilla and Potato Leek.
Sheldon: Can I get any of those with little frankfurter slices and home made croûtons?
Penny: No.
Sheldon: Then surprise me.

Raj: Well if you leave now, you can be back before the gorillas rip the crap out of Charlton Heston.
Howard: Unless Sheldon's there, in which case you'll be trapped forever in his whiny hyper neurotic snot-web.

Howard: Alright, you're close enough to Sheldon's room, deploy the sensor. Now turn it on.
Leonard: It wasn't on?
Howard: No.
Leonard: Then why did I have to crawl?
Howard: Oh, I guess you didn't.
Leonard: Okay, it's on.
Howard: Good. From this point forward you will have to crawl.
Leonard: I know!

Sheldon: Do you think Penny will come here and take care of us?
Leonard: I don't think Penny’s ever coming here again.
Sheldon: I'm very congested.
Leonard: Yeah, so?
Sheldon: Can you go to the kitchen, and get me the turkey baster labeled mucus.
Leonard: If I stand, I'll vomit.
Sheldon: Under the sink, yellow Tupperware bowl.

Dr. Gablehauser: I thought maybe you boys could show Dennis around, let him see why we're the best physics research facility in the country.
Dennis Kim: I already know you're not. You don't have an open science grid computer, or a free electron laser, and the string theory research being done here is nothing but a dead end.
Sheldon: Excuse me, that is my research, and it is by no means a dead end.
Dennis Kim: Well, obviously you don't see it yet, but trust me, you will.

Sheldon: What the hell do you mean, dead end?
Dennis Kim: I mean, the whole landscape of false vacuums in string theory could be as large as ten to the five-hundredth power. In addition ... ooh, look, chocolate milk.
Sheldon: I sense a disturbance in the force.
Leonard: (Imitating Yoda) A bad feeling I have about this, mmm-hmmm.

Sheldon: Alright, and this is my office.
Dennis Kim: Is this part of the tour?
Sheldon: Nope. Goodbye.
Leonard: Come on, Sheldon, we've hardly shown him anything.
Sheldon: Oh, alright. This is my desk, these are my books, this is my door, please close it behind you. Goodbye.

Leonard: Come on, Dennis, I'll show you the rec centre, they've got nautilus equipment.
Dennis Kim: Do I look like I lift weights?
Leonard: Not heavy ones.