Georgie: If you are here about Sheldon's wedding, don't bother.
Leonard: Come on. I-I know you two have your differences.
Georgie: You mean pretty much everything about us?
Leonard: Well, not everything. (laughs) You're both tall ... you have the same last name ... Maybe I shouldn't have started this like it was a list.

Leonard: What would you be if you were attached to another object by an inclined plane, wrapped helically around an axis?
Sheldon: Screwed?
Leonard: There you go.

Sheldon: This song is never going to stop. Have you ever dealt with something so relentlessly irritating?
Leonard: That's a trick question, right?

Leonard: Penny, as a scientist, my job is to figure out why things happen. But I don't think I'll ever understand how someone like me could get to be with someone like you. You know maybe I don't need to understand it, I just need to be grateful. I love you, Penny.

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: 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: 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.