Sheldon: Another carnal fiasco with the shiksi goddess.
Howard: Shiksa. Shiksa.
Sheldon: Forgive me, Yiddish was not spoken in East Texas, and if it was, it wasn't spoken for long.

Crawley: Ha-ha. Don't knock, just walk in. Why be polite to the world's leading expert on the dung beetle?

Howard: Could you look at Toby?
Crawley: Toby? What a stupid name for a cricket.
Sheldon: (To Howard) Told you.

Sheldon: Professor, can you identify our cricket?
Crawley: Of course I can. I can identify every insect and arachnid on the planet. Not that that's gonna keep me from having to move in with my daughter in Oxnard. And we're not talking Oxnard at the beach. No, we're talking Oxnard in the onion fields!

Leonard: Trust me, this will be just fine.
Howard: You are the authority on just fine.
Leonard: What's that supposed to mean?
Howard: (after Raj whispers to him) Yeah, exactly. Not bad, but not great.
Penny: What are they talking about?
Leonard: I don't know.
Sheldon: I know. As I'm sure you're aware...
Leonard: Duh-duh-duh-duh-duh-duh.
Sheldon: If that's Morse code, that's terrible.

Penny: You may be right about me and Leonard.
Sheldon: Of course I'm right What are the odds I'd be wrong twice in one week?
Penny: No, I mean, we can always go back to being friends.
Sheldon: I just said that. This conversation has started to circle. Meeting adjourned.

Leonard: Ethyl alcohol inhibits electrical conduction in the nerve cells and stimulates re-uptake receptors of inhibitory neurotransmitters like gamma-amino butyric acid.

Leonard: Sheldon, dinner's here.
Sheldon: Tandoori Palace?
Leonard: No, we went somewhere new.
Sheldon: You’re good-naturedly ribbing me, aren't you?
Leonard: No, look, Mumbai Palace.
Sheldon: Why? Why would we change? We had a perfectly good palace. Tandoori Palace is our palace.

Raj: Be careful.
Sheldon: If I were not being careful, your telling me to be careful would not make me careful.

Crawley: I've been studying insects since I was 8 years old. You know what they use to call me in school? Creepy Crawley!

Leonard: Nothing flamed out. We don't have to have sex every night, you know.
Howard: You don't have to, but it's highly recommended.
Raj: Yeah, take advantage of that window of opportunity before it slams shut on your little dinky.

Leonard: It's not a matter of opportunity. We're getting to know each other. There's a learning curve.
Howard: What's there to learn? You get naked, do nasty things to each other, then somebody makes scrambled eggs and salami. Easy peasy.

Sheldon: Perhaps what Leonard is obliquely referring to is the occurrence of some sort of sexual dysfunction.
Raj: Okay, who had Leonard gets a floppy disk?
Sheldon: Oh, a clever, albeit obsolete, euphemism for insufficient blood flow to the male sex organ.

Sheldon: As I was saying, you and Leonard had a disappointing sexual encounter. Earlier this evening, Leonard characterized it as just fine. So what you're seeing here is a continuation of the mocking that followed.
Penny: Okay. Yeah, well, I'm just gonna go eat my dinner elsewhere. Maybe an airplane headed for a mountainside.

Penny: What did you tell them?
Leonard: Nothing bad, just that last night was fine.
Penny: Fine? You said it was fine?
Leonard: Yeah, it's a perfectly good word. You put it in front of wine or dining, and you've really got something.