Penny: This is ridiculous. You know, I'm gonna go talk to the matre d'.
Leonard: What are you gonna say?
Penny: I don't know. I'm ... I'm gonna flirt with him.
Leonard: I don't know if I'm comfortable with that.
Penny: I'm still sleeping with you tonight.
Leonard: See if you can get a table by the window.

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.

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.

Leonard: My point is, while you're spending all this time on your own, building computers or practicing your cello, what you're really doing is becoming interesting. When people finally do notice you, they're gonna find someone a lot cooler than they thought. And for those of you that were popular in high school, it's over, sorry. Thank you. Congratulations.

Amy: Hi. You're on Fun with Flags.
Barry Kripke: Hello. I want to talk about how lonely I am, too.
Raj: Kripke? Is that you?
Barry Kripke: Yeah, I'm just sitting here all by myself wondering if I'll ever find someone to share my life with. Preferably Asian, 18-24, no fatties.

Sheldon: Oh, and speaking of Valentine's Day, I haven't forgotten about you tonight.
Amy: What do you mean?
Sheldon: Well, you've become such an integral part of my life as well as this show, I felt it only right to include your name in the title.
Amy: Oh, that is so sweet.
Sheldon: So from now on, this program will be officially known as Dr. Sheldon Cooper and Dr. Amy Farrah Fowler present Dr. Sheldon Cooper's Fun With Flags.
Amy: Catchy.

Amy: Since we're live, you'll finally be able to reach out to us with your flag thoughts and flag questions.
Sheldon: Allow us to answer a few quick ones that we get all the time. Uh, yes, I really am a doctor. Uh, yes, she really is my girlfriend.
Amy: No, I just blink a lot, it's not Morse code for "rescue me."