Leonard: Oh, it's just nice to be with people who are happy to have me around. Isn't that right, Halley?
*Halley starts crying*
Howard: Well, at least someone had the courage to say it.

Sheldon: Oh, you know. The Lone Star state. That should be its Yelp rating.

Leonard: Okay, so this is the main Comic-Con floor. It's where all the vendors and exhibits are.
Penny: Wow, that is a lot of people jammed in there.
Leonard: I know. Sometimes Howard wears a striped shirt so we can play "Where's Wolowitz?"

Leonard: I got it.
Howard: You really figured it out?
Leonard: No, but when we show this nonsense to Sheldon, it will make him crazy, and he'll have to fix it.
Howard: Oh, you're a genius.
Leonard: Yeah, I know. That's not even a math symbol. That's just Charlie Brown's hair.

Howard: Should we get lunch or you want to eat at the zoo?
*Bernadette and Stuart staring at their phones*
Howard: (imitating Bernadette):"Oh, Howie, I don't need food as long as I can look at my phone."
Bernadette: I don't like when you imitate me.
Howard: You want to hear my Stuart? (imitating Stuart) "It's been a while since I've gone on a date.
You mind if we watch the monkeys doing it?"
Stuart: I said that to you in confidence.

Sheldon: And you realize what the next step is?
Amy: Set up a second culture and try to replicate our results.
Sheldon: Uh, no. We lock that door, lower our underpants a little, and make a baby.

Amy: Why don't you ask me what I'm working on?
Sheldon: Oh, very well. What have you been working on? And feel free to honk during the boring parts.

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.

Raj: Hey, this pregnancy had an emotionally-needy third wheel way before you came along.

Bernadette: But I thought I'd be more excited.
Dr. Koothrappali: Oh, being excited isn't a guarantee of anything. Rajesh's mother was thrilled when she was pregnant with him. After he was born, she doted on his every move. And you know what happened? He broke her heart, moved halfway around the world, and dates only poor white women. So you never know.

Raj: No offense to her father, but he's not an MIT-trained engineer. Thinking and building is what you do.
Howard: MIT's motto is "Mind and Hand," which just so happens was also my motto as a lonely teenager.

Sheldon: B.R.B. That's short for "be right back." I'm saving so much time!

Bernadette: It's okay, I'm just being emotional about this. Can you not tell Howard?
Stuart: Well, don't you think it'd be healthier if you told him what's going on with you?
Bernadette: Don't you think it'd be healthier if you had your own apartment, grown man?
Stuart: Your secret is safe with me.

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

Penny: You can stay in Leonard's room, and we'll stay at my place.
Amy: You're sure that's not an inconvenience?
Penny: No, not at all.
Leonard: And we live with Sheldon, so the word "inconvenience" has really lost all meaning.