Sheldon Cooper: Leonard. That's Mark Ha-Ha-Ha... It's-it's Mark Hami-Ha-Ha...
Leonard Hofstadter: Yep. Thank Wolowitz. He set it up.
Mark Hammil: Congratulations on your wedding.
Sheldon Cooper: Thank you. When this is over, I have 4,000 things for you to sign.
Amy Farrah Fowler: I-I thought Wil was marrying us.
Sheldon Cooper: Wolowitz got us an upgrade.
Amy Farrah Fowler: Another sci-fi guy with a beard. Seems lateral, but okay.
Amy Farrah Fowler: So are you feeling okay? No wedding jitters?
Sheldon Cooper: No. There is nothing in the world that would stop me from marrying you tomorrow, even me from the future coming back to prevent the wedding and the subsequent birth of a child who will destroy humanity.
Amy Farrah Fowler: Because if you came from the future, that would mean you already went through with the wedding because you believe that time travel is on a closed loop.
Sheldon Cooper: I love you so damn much.
Amy Farrah Fowler: I think it's more like, uh, like Lord of the Rings, and you're the Fellowship. Uh, someone's got to go to Gondor, someone's got to go to Mordor, someone's got to hold off the demon of shadow and flame.
Leonard Hofstadter: You mean the Balrog?
Amy Farrah Fowler: I mean my mother.
Sheldon Cooper: That is a perfect metaphor, Amy.
Amy Farrah Fowler: Thank you.
Sheldon Cooper: Because it also involves a ring that binds me in servitude forever.
Amy Farrah Fowler: Aw, he said forever.
Amy Farrah Fowler: You didn't invite your brother to your own wedding?
Sheldon Cooper: He tormented me my whole childhood. I don't think I should reward that type of behavior with a slice of wedding cake in the shape of the Millennium Falcon.
Amy Farrah Fowler: Try again.
Sheldon Cooper: A slice of wedding cake in the shape of a cake.
(Penny and Amy are going through wedding magazines)
Amy Farrah Fowler: It's just so hard to tell what will look good on me.
Penny Hofstadter: No. This is just to give you ideas. You know, do-do you want something simple and elegant? I mean, do you want a train?
Sheldon Cooper: Ooh, we're talking about trains.
Amy Farrah Fowler: Not the kind of trains you like.
Sheldon Cooper: Oh, I like all kinds of trains... steam, diesel, coal, elevated, bullet. I defy you to name a train that I don't like.
Penny Hofstadter: The kind on the back of a wedding dress?
Sheldon Cooper: I did not see that coming. Good job.
Sheldon Cooper: I suppose it is time I passed this on to Leonard.
Penny Hofstadter: Thank you.
Leonard Hofstadter: Yeah, thanks. I-I know that's hard for you.
Sheldon Cooper: Well, it was. But you know what? Instead of being in charge, I can now be the vocal opposition, criticizing and badgering the president at every turn.
Amy Farrah Fowler: I think you'll be really good at that.
Sheldon Cooper: Me, too.
Leonard Hofstadter: I think I've made a huge mistake.
Penny Hofstadter: Me, too.
Amy Farrah Fowler: Sheldon, it's the American way, the peaceful transfer of power.
Sheldon Cooper: I don't know.
Leonard Hofstadter: Think about Ant-Man.
Sheldon Cooper: I'm always thinking about Ant-Man.
Leonard Hofstadter: Michael Douglas had the suit and then he passed it on to Paul Rudd.
Sheldon Cooper: Maybe you're right.
Amy Farrah Fowler: Really? The Ant-Man thing? That's what won you over?
Sheldon Cooper: Yes. He got the details right. That's how you use a superhero.
Sheldon Cooper: I'm trying this new technique where I imagine how I would feel in someone else's position.
Amy Farrah Fowler: Y-You mean empathy?
Sheldon Cooper: Oh, I thought I came up with it.
Amy Farrah Fowler: Well, regardless, I-I appreciate the effort.
Sheldon Cooper: Thank you. It's really hard.