Penny: You know, when Leonard's feeling anxious, I make him take a long walk.
Amy: Does that help?
Penny: For a while, then he comes back.

Sheldon: Being with Amy has awoken the sexual creature within. When I see a pretty gal walking down the street, I think, "hubba hubba" like any other guy.
Penny: You kiss your mother with that mouth? 'Cause it's fine.

Howard: You know, maybe before our meeting we should talk to a lawyer.
Leonard: That's not a bad idea.
Raj: Well, you must have someone in your family that's a lawyer.
Howard: Why? Because I'm Jewish? That's like me saying, "Hey, you're Indian. Doesn't your cousin work in a call center?"
Raj: My cousin does work in a call center.
Howard: And my cousin's a lawyer.

Leonard: Sheldon, this is not a big deal. It's a little white lie, everyone does it.
Raj: Not me, I'm a 100% honest in all of my relationships.
Howard: And how single are you right now?
Raj: Eating-cake-on-the-toilet single.

Amy: I've been smacking that ketchup bottle for a long time. All she has to do is tip it over and point it at her fries.

Sheldon: My pants are missing, I don't remember anything. Penny, this is your youth. What do I do?

Amy: Listen, you and I are gonna be sharing a bed. You know, this is uncharted territory for both of us. How are you feeling about that?
Sheldon: Oh, excited, concerned, a little scared. All the same emotions I feel in line at Space Mountain.

Sheldon: No matter where I am, this will always be my spot.

Bert: Okay, well, thanks for coming by. You're nice people.
Penny: Well, so are you. In fact, you know what? We will never take you for granite. Did you get that? Granite? A little geology joke.

Amy: Comfy?
Sheldon: Oh, I'm just happy I don't know what this memory foam remembers.

Stuart: Nice to see you again, Dr. Hofstadter. I'm, uh, Leonard's friend, Stuart.
Beverly Hofstadter: Nice to see you, too.
Stuart: Hi, I'm Stuart.
Alfred Hofstadter: Ooh, I'm Alfred, Leonard's father.
Stuart: Oh! Oh, hi. Uh, I'm sorry, did you two want to sit together?
Beverly Hofstadter: No!
Alfred Hofstadter: No!
Stuart: I was wondering why the front row was available.

Bernadette: Anybody have anything snarky to say about that? Didn't think so.

Amy: Sheldon, that's enough.
Sheldon: Oh, yeah, no, fine. Let's just agree that both creations are special in their own way and it is foolish to try and compare them. Although, we didn't need to have sex with Howard for ours, so we win.

Raj: Yeah, this military guy showed up at Howard's door. He was terrifying.
Sheldon: Oh no, what did he say?
Raj: He gave me his business card and asked me to please pass it along to Howard.
Sheldon: That doesn't sound terrifying.
Raj: Not to a white guy born here, no. To a brown guy whose name has a lot of syllables in it - terrifying.

Sheldon: We don't need Howard's cousin, no. We have me.
Leonard: You're not a lawyer, Sheldon, you're just a know-it-all.
Sheldon: I am not a know-it-all. I'm a person who knows lots of things and likes to correct other people when they're wrong.
Leonard: That's the definition of being a know-it-all.
Sheldon: Or in German, a Besserwisser.