Penny: You know you're gonna make up with him. Can we just skip to that part?
Leonard: Oh, of course, because I'm the only adult around here.
Penny: Really? The only adult?
Leonard: Yeah, that's right.
Sheldon: Tonight, I'll be watching a show rated MA, and that stands for mature audiences, buster.

Howard: If it's a girl, I mean, they're so innocent and you know how guys are.
Raj: Totally, guys are the worst. I mean, look at me. I let Emily make me a frittata and I kept the leftovers in Claires fridge that night. I'm such a dog.

Amy: What's going on with him?
Penny: Oh, he's all bent out of shape about having a roommate agreement meeting.
Sheldon: Apparently, perfect attendance isn't cool any more.

Raj: Hey, did I say something to upset you?
Howard: No, I'm fine.
Raj: Really? Because usually we walk side by side, and I just went up two flights of stairs staring at your bottom.

Raj: Okay, I think I see what's happening here. You're jealous of me.
Howard: Oh, please. What could you possibly have that I would be jealous of?
Raj: It's not what I have, it's how many people I'm having it with.

Stuart: Hey, Leonard.
Leonard: Stuart.
Stuart: Uh, is this not a dress-up party?
Leonard: No.
Stuart: Was it ever a dress-up party?
Leonard: No.
Stuart: Howard, didn't you tell me it was a dress-up party?
Howard: Yeah.

Sheldon: Well, I'll catch you up. Uh, Penny is angry at Leonard, Leonard's angry at me and Penny, I'm angry at Leonard and Amy, Raj is angry at Howard, and I'm angry at George R.R. Martin 'cause there are no new books for me to spoil for Leonard.

Amy: That was scary.
Sheldon: Well, the important thing is I said that big sandwich would ruin everything, and I was right.

Sheldon: *Knock, knock, knock* Leonard. *Knock, knock, knock* Leonard. *Knock, knock, knock* Leonard.
Leonard: What?
Sheldon: I never got to ask my question about Batman.
Leonard: What is it?
Sheldon: If Batman were bitten by a radioactive Man-Bat, and then fought crime disguised as Man-Bat, would he be Man-Bat-Man-Bat-Man or simply Man-Bat-Man-Bat-Batman?
Penny: Is he still wearing the Batman suit under the Man-Bat suit?
Sheldon: (a moment's pause) I'll be back.

Raj: They know that we're not exclusive, and we just don't ask too many questions.
Sheldon: You know, it's like how I play Warlords of Ka'a with you and Elder Sign with Frank and Alicia.
Leonard: Who's Frank and Alicia?
Sheldon: You, you and I spend a lot of time together. Can there be a little mystery between us?

Sheldon: I am going to record this for posterity.
Leonard: All right, here goes nothing.
Sheldon: Here goes nothing? This is the initial test of our prototype. Can we give it a little more gravitas?
Leonard: Fine. Preliminary trial of the infinite persistence gyroscopic navigational system, phase one commencing.
Sheldon: Eh, maybe it's your voice. I'm gonna see if I can get James Earl Jones to do it in post.

Penny: Hey, you ready to go?
Leonard: Hang on.
Penny: What are you doing?
Leonard: Oh, I found a scratch-and-sniff book about wine tasting. It teaches the different flavor notes to look for.
Penny: You actually smell the wine?
Leonard: I mostly just smell my nasal spray.
Penny: Are your sinuses acting up?
Leonard: Since my preschool got a bunny.

Amy: So, Sheldon and Bernadette are hanging out.
Howard: I know. What are they gonna talk about?
Amy: I don't know. I really don't know.

Amy: Hey, Penny, isn't that your old boyfriend Zack?
Penny: Oh, yeah.
Amy: Are you gonna say hi to him?
Penny: Um, I don't know.
Raj: Hey, while you decide, who was better in bed, big hot Zack or wheezy little Leonard? Neener-neener.

(at the urinals)
Leonard: Maybe we should take a step back.
Howard: Take a step back? I'm not a young man any more.