Sheldon: Raj, now, I'm sorry you're suffering. When Amy and I were broken up, I also suffered. And this may sound surprising, but I'm grateful for having gone through it.
Amy: Really?
Sheldon: Yes. I believe our relationship now is stronger than ever.
Amy: So do I.
Sheldon: When we were apart, I learned how important you are to me. And I realize that when two people are in love, sometimes they-

Raj: I don't like bugs, okay. They freak me out.
Sheldon: Interesting. You're afraid of insects and women. Ladybugs must render you catatonic.

Sheldon: Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.

Sheldon: Why are you crying?
Penny: Because I'm stupid.
Sheldon: That's no reason to cry. One cries because one is sad. For example, I cry because others are stupid, and that makes me sad.

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."