Howard: I'll take the heart smart platter.
Penny: Alright, thank you, and Sheldon.
Sheldon: We don't eat here. I don't know what's good.
Penny: Well, it's all good.
Sheldon: Statistically unlikely.

Raj: Oh dear.
Howard: What's the matter?
Raj: She didn't take my order.
Howard: How can she take your order when you're too neurotic to talk to her?
Raj: Nevertheless, this will be reflected in her tip.

Leonard: What did Penny mean, you'd make a cute couple?
Sheldon: Well I assume she meant that the two of you together would constitute a couple that others might consider cute. An alternate, and somewhat less likely interpretation, is that you could manufacture one. As in, oh look, Leonard and Leslie made Mr. and Mrs. Goldfarb, aren't they adorable.

Penny: Alright, look, a tie on the doorknob usually means someone doesn't want to be disturbed because they’re, you know, getting busy.
Sheldon: So you're saying Leonard has a girl in there.
Penny: Well, either that or he's lost his tie rack and gotten really into Bryan Adams.

Sheldon: Do you realise I may have to share a Nobel Prize with your booty call?
Leonard: You know what, I'm being ridiculous. Who cares what Penny thinks? Leslie is a terrific girl. She's attractive, we like each other, she's extremely intelligent.
Sheldon: She's not that intelligent.
Leonard: She fixed your equation.
Sheldon: She got lucky.
Leonard: You don't believe in luck.
Sheldon: I don't have to believe in it for her to be lucky.

Leonard: Hey, why don't you tell me about your showcase last night?
Penny: Oh, it was okay, I guess. Wasn't a big turnout, but they both really seemed to like it.
Leonard: There were only two people there?
Penny: By the end, yeah.

Penny: Alright, remember when I auditioned for that workshop production of Rent, but I didn't get it and I couldn't figure out why?
Sheldon: I have a conclusion based on an observation.
Leonard: No, you don't. No he doesn't.

Sheldon: Never mind. I clearly woke you up in the middle of a REM cycle. You're in no state to talk.

Sheldon: Remember how Leonard told you we couldn't come to your performance because we were attending a symposium on molecular positronium?
Penny: I remember symposium.
Sheldon: Yes, well, he lied.
Penny: Wait, what?
Sheldon: He lied, and I'm feeling very uncomfortable about it.
Penny: Well imagine how I'm feeling.
Sheldon: Hungry? Tired? I'm sorry this really isn't my strong suit.

Leonard: You told her I lied? Why would you tell her I lied?
Sheldon: To help you.
Leonard: I'm sorry, I'm not seeing the help.
Sheldon: She was going to see through your lie eventually, so I told her that you were lying to protect me.
Leonard: Oh, I'm getting a bad feeling.
Sheldon: Hunger? Indigestion? I'm sorry. I'm really not very good at this.

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.