Amy: Do you want to go back to the apartment and see me try on my dress?
Sheldon: Shouldn't I see it for the first time at the Nobel ceremony?
Amy: It's not a wedding.
Sheldon: Okay. Well, give me a minute to think of another reason I don't want to see it.

Leonard: You pick up your dresses?
Amy: Yep. The tailor had to take mine in and let Penny's out. Best day of my life.
Sheldon: What about the day you met me?
Amy: I stand by my statement.

Penny: Pickled herring. Who knew how good it was!
Leonard: Really? Sounds gross.
Penny: Looks gross. Smells gross. It's delicious! [knock on door] Ooh, that might be my salted cod!

Sheldon: Leonard we need to do something about your wife.
Leonard: What's the matter?
Sheldon: She is clearly sick, and she's gonna take us all down with her.
Leonard: She's not sick, Sheldon.
Sheldon: She is, and I'm gonna catch it, and it's gonna ruin the greatest day of my life.
Leonard: I promise you're not going to get what she has.
Penny: What's going on?
Sheldon: [gasps] Unclean! Unclean!
Penny: What?
Leonard: He thinks you're sick.
Penny: Oh. Should we tell him?
Leonard: Well, if we don't, he might try and jump out of the plane.
Penny: Yeah. Doesn't answer my question.

Sheldon: "Number one, in Sweden, punctuality is taken very seriously. In other words, the loosey-goosey attitude in Helsinki will not fly in Stockholm."
Amy: "Two, at the beginning and end of all business and social meetings, shake hands with everyone present: men, women and children."
Sheldon: Yes, you're all encouraged to pair off and practice this once we're in the air and the seat belt sign is off.

Howard: Oh, good, you're here. Listen, we're thinking maybe we should go back to L.A.
Amy: Why?
Howard: We just can't be this far away from the kids. Bernie's having a meltdown, and, frankly, so am I.
Sheldon: Yeah, well, pull it together. This is a big day for me.
Howard: [scoffs] Yeah, I wasn't sure what to do. Now I am. We're going home.
Leonard: We'll join you.
Penny: Oh, wait. Do I get a vote in this?
Leonard: They'll have pickled herring on the plane.
Penny: Bye-bye.

Leonard: Excuse me, but if I recall, you're the one who went out drinking with Sheldon, then came home and attacked me.
Penny: Attacked you? I said, "Do you wanna?"
Leonard: Yeah. I was helpless.
Penny: Uh-huh.
Leonard: So do you wanna?
Penny: Well, I can't get more pregnant.
Leonard: Mm-hmm. We'll see about that.

Sheldon: All right, bagels down. Before we head to the airport, I'd like to go over a few things.
[others groan]
Sheldon: From the moment we step off the plane, each and every one of you is an ambassador for Amy and myself.
Howard: [to Bernadette] I told you these tickets weren't free.

Sheldon: Hello? What did we just learn about the end of business meetings? [everyone groans as they shake each other's hands]

Bernadette: Howard, the kids are okay.
Howard: How do you know that?
Bernadette: I just know. A mother knows.
Howard: So what, now the Force is with you?
Bernadette: Let's see. This is not the woman you want to annoy.

Raj: Just remember, you're in charge. Don't let her pull you.
Bert: That seems like an unnecessary thing to say.

Howard: You still feel good about leaving them with Stuart and Denise for a couple days?
Bernadette: I guess. I just hope we don't miss Michael's first words.
Howard: Or Stuart's last words.

Sheldon: What would you like me to say?
Leonard: How about congratulating us?
Sheldon: Are congratulations even in order? I didn't think Penny wanted children.
Leonard: Well, she didn't, now she does. And just so you know, we weren't gonna tell anybody so we wouldn't upstage your big day.
Sheldon: Oh, please, you couldn't upstage us. We won a Nobel Prize. Any idiot can have a baby.
Howard: Hey. What's going on?
Sheldon: Case in point.

Bert: You really think walking her is gonna help me meet girls?
Raj: Cinnamon is chick bait.
Bert: Good. 'Cause I'm not.

Sheldon: Carbon. Hydrogen. Carbon. Carbon. And last but not least, carbon.
Leonard: This might be the glue talking, but that was a very pleasurable 139 and a half hours.
Sheldon: Agreed.