Amy: What is this?
Sheldon: I'm mapping basic topics of conversation and with whom they can be discussed.
I call these circles "Zones of Privacy". Don't Google that unless you want to see pictures of people's genitals.

Bert: I met her on G-Harmony. That's a Web site for geologists to find love.
Amy: That's a real thing?
Bert: Yeah. Their slogan is "We're all about dating and not the carbon-14 kind".

Sheldon: Two years ago I got my driver's license.
Amy: What? Why didn't you say anything?!
Sheldon: I like being chauffeured around. It makes me feel important.
Amy: So when I got up at 4:00 AM to drive you across the desert to an antique train museum, I didn't have to?
Sheldon: No, you didn't. But keep in mind, I felt extremely important.

Bernadette: When you moved here, you didn't have a lot of money. How'd you get by?
Penny: Well, sometimes you can get free food and Wi-Fi from the neighbors. Just know you might have to marry one of 'em.

Bert: Hey. Looks like I got stood up, so I'm gonna head out.
Amy: Oh, no. Are you sure you don't want to give her a few more minutes?
Bert: Nah, G-Harmony recommends after two hours, it's time to cut bait.

Bert: Good question. Let's see. Infoseek, WebCrawler, oh, HotBot.

Amy: I'm not sleeping on the couch 'cause you don't know what's private and what's not.
Sheldon: This isn't fair. You've discussed aspects of our physical relationship with Penny.
Amy: That's different! She's a close friend, not the lady in the cafeteria who cuts the crust off your sandwiches!
Sheldon: That lady has a name. I don't know what it is, but one time, I accidentally called her "Mom".

Dr. Koothrappali: You're an adult who can't get by without an allowance from his parents. Women don't want that.
Raj: What are you saying, that you're giving up on me? What kind of father gives up on his son?
Dr. Koothrappali: I have six children, five of whom are married and self-sufficient. I don't think I'm the problem.

Sheldon: Well, wait. This is our first fight as a couple who live together.
Amy: So?
Sheldon: I'm not sure of the protocol. Television teaches us that the man's supposed to sleep on the couch, but of the two of us, you're clearly more sofa-sized.
Amy: I'm not sleeping on the couch 'cause you don't know what's private and what's not.

Penny: What is happening?
Leonard: This is an Euler's Disk. It's a physics toy that demonstrates angular momentum, potential energy, and kinetic energy.
Penny: Aw, look at you watching sports.

Raj: Uh, listen, I just wanted to let you know when you get my credit card bill, it might be a little high this month.
Dr. Koothrappali: Well, you're a grown man with a steady job. Why wouldn't you spend all your father's money?

Sheldon: If you think that's more fun than talking to Zachary Quinto through a stall door, you're crazy.

Penny: You know, we could've come to you guys. You didn't have to bring the baby here.
Bernadette: Oh, it's okay. It's good to get out of the house.
Howard: And the car ride puts her to sleep.
Leonard: Aw, that used to work with Sheldon.
Penny: Yeah, until someone left him in the drugstore parking lot and he freaked out.
Leonard: Who forgot to crack the window?

Penny: Oh, someone's been shopping at Gucci.
Raj: Yeah, I saw something for Halley and I couldn't resist.
Bernadette: That's so sweet of you.
Raj: Yeah, it's a crushed velvet baby cape.
Howard: Oh, no, now we have two.

Penny: That must've been expensive.
Raj: Yeah, it was. But it's my father's money and I'm mad at him.
Leonard: What's going on with your dad?
Penny: And if you really want to hurt him, I look great in Chanel.