Amy: You infected me a week before my wedding. What am I supposed to do about this?
Bernadette: Wear a veil?
Penny: (laughs) ... It's not funny.

Leonard: If I take it off, Sheldon wins.
Penny: Sweetie, every night you don't kill him in his sleep, he wins.

Penny: I mean, who even reads Scientific American?
Leonard: It's kind of a big deal.
Penny: If it's such a big deal, how come the biggest celebrity they could get for the cover is a molecule?

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Georgie: After all my sacrifices, guess which kid my mom is the most proud of?
Leonard: If it makes you feel any better, my mom's most proud of Sheldon, too.

Georgie: Picking on him? Is that what he told you?
Leonard: Well, what about the time you threw away his Halloween costume?
Georgie: Well, yeah, 'cause he was gonna dress as some girl scientist.
Leonard: Madame Curie?
Georgie: Oh, I didn't know she was a madam.

Georgie: Leonard, you know how I got the money to open up my first store? I busted my ass for it, 'cause all the extra money that we had had to go to Sheldon so he could go to college and he could go study in Germany. And do you know what he's never said to me?
Leonard: Danke schon? It's, uh, "thank you" in German.
Georgie: Do you need me to sit on your head?
Leonard: Nope.