(Raj is introducing Andrea, the director of the planetarium, to Howard...)
Howard Wolowitz: Nice to meet you. I'm Howard Wolowitz. Engineer, husband, father... astronaut.
Andrea: Really? You're an astronaut?
Howard Wolowitz: Well, I don't like to brag.
Rajesh Koothrappali: Hmm, yeah, but somehow, you manage.
Amy Farrah Fowler: Who's Tam?
Sheldon Cooper: He was my best friend in the whole world growing up.
Amy Farrah Fowler: Really? Why have I never heard you mention him before?
Sheldon Cooper: Oh, of course I have. I'm sure I've mentioned him, like, five times this week.
Amy Farrah Fowler: I don't think you have.
Sheldon Cooper: Tam! Tam! Tam! Tam! Tam! There, it's only Thursday.
Amy Farrah Fowler: I didn't just drink the crazy milk, I bought the crazy cow.
Amy Farrah Fowler: What the hell, Penny?!
Penny Hofstadter: I'm gonna need more than that.
Amy Farrah Fowler: You're not having kids? How could you do this to me?
Penny Hofstadter: How is it any of your business?
Amy Farrah Fowler: Because your kids were supposed to be friends with my kids. Who's gonna be friends with them now?
Penny Hofstadter: They will find other friends.
Amy Farrah Fowler: Oh, sure, 'cause Sheldon's DNA plus my DNA equals a kid who knows how to make friends. Grow up!
Bernadette Rostenkowski-Wolowitz: Man, that is one hot weather girl.
Howard Wolowitz: How come if I say that I get in trouble?
Bernadette Rostenkowski-Wolowitz: You want to say it? You can say it.
Howard Wolowitz: Nice try. You're gonna have to find some other way to not have sex with me tonight. And it's not weather girl, it's weather woman.