Sheldon: *Knock, knock, knock* Amy. *Knock, knock, knock* Amy. *Knock, knock, knock* Amy.
Amy: Come in.
Sheldon: Hello, everyone. Oh, Beverly, good to see you. I'd love to chat, but there's a line that could start moving any minute, so let's do this. Amy? A proper apology requires three steps. Step one, an admission of wrongdoing. Amy, I was wrong. Step two, a promise never to repeat said action. Amy, that action will never be repeated, and that's a promise. Step three, an earnest request for forgiveness. Amy, I hope you can forgive me. And I hope you do it right now, 'cause there's an Uber waiting downstairs, and I don't want to repeat this apology nonsense with my driver Ganesh.
Amy: Fine.
Sheldon: Oh, thanks, you're a peach. Beverly, we'll catch up soon. Bernadette, it was a pleasure as always. Penny, you have spinach in your teeth.

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.

Stuart: Anyone else need anything before I go?
Howard: I'll give you a dollar if you make fun of Raj.
Stuart: That's mean.
Howard: Five.
Stuart: You look like Tigger if Tigger looked like a jackass.
Howard: Uh, if you ever need a reference or anything, just let me know.

Penny: Helium.
Sheldon: Yes.
Penny: Yes.
Sheldon: Taylor Swift.
Penny: Yes. Pi.
Sheldon: Yes. Kardashian.
Penny: More specific.
Sheldon: Khloe?
Penny: Yes.
Sheldon: See, I remembered because if it looks like Kim it's Kim, if it looks kind of like Kim it's Kourtney, and if it looks nothing like Kim it's Khloe.

Penny: Oh, that's a Venn Diagram, and I remember because I thought to myself, "Venn is he gonna stop talking about this diagram?"