Howard: I was going to say we pick up a cake or a pie, but an insult to her faith is always thoughtful.

Penny: Got it. Hey, who's the murderer?
Raj: Any question but that.
Penny: Sorry. Hey, who's not the murderer?

Amy: I think it might be fun to be someone else tonight.
Raj: Actually, you're all just going to be yourselves.
Amy: Oh, uck.

Raj: Have you heard from Howard?
Bernadette: I did. His talk at NASA went great.
Penny: Sheldon didn't heckle him?
Bernadette: No. In fact, he was so well behaved Howard bought him a Buzz Aldrin bobblehead and astronaut ice cream.

Amy: Should you really be sitting in Sheldon's spot?
Raj: He's in Texas, he'll never know.
Penny: Wouldn't be so sure about that.
Leonard: Yeah, he has a very sensitive butt. Look, it's true. Once I saw him sit on a bunch of loose change and add it up.

Bernadette: I told Howard if I wasn't busy I'd spend the night at his mom's. So for God's sake, think of something.

Stuart: How's it going?
Raj: Good. Sheldon's out of town so we can do whatever we want. We even ordered from the Thai place he doesn't like.
Stuart: How is it?
Penny: Disgusting. Do not tell him.

Raj: It's too late. He's been murdered by someone in this room. Welcome to another classic Koothrappali murder mystery dinner.
Amy: I'm leaving.

In-flight Announcement: The Captain has turned off the fasten seatbelt sign. You're now free to move about the cabin.
Howard: It's over.
Sheldon: Yeah.
Howard: Should we stop holding hands now?
Sheldon: In a minute.
Howard: Okay, good.

Sheldon: I'm sorry for every mean thing I ever did or said to you.
Howard: I'm sorry too. It's all my fault.
Sheldon: If you weren't my friend there'd be a hole in my life.
Howard: Thank you, Sheldon.
Sheldon: Kind of like when Firefly was cancelled, but not as big.

Raj: Not my best first date, but not my worst either.

Raj: Hello, Emily.
Emily: Hello.
Raj: Amy told me you were concerned that I might be too passive and shy. Let me ask you something: would a passive guy barge in here to look you in the eye and say "Hey, dew-kissed flower. What's up?".
Emily: No, but a weird guy with no boundaries might.
Raj: Okay, that's a separate issue. Let's put a pin that and just focus on the passive thing.

Penny: I don't know what to say.
Leonard: Don't say anything. ... I mean you could say thank you, I did just buy you a car.

Penny: It's just so humiliating.
Leonard: "So humiliating?" Am I driving you to the Cheesecake factory or - I'm sorry, I'll stop. I'll stop.

Penny: Come on, let's just get this over with.
Leonard: "Let's just get this over with?" Am I driving you to the Cheesecake Factory or are we having sex?