Sheldon: "Sheldon's Mine Simulation Log, entry 4: My KitKat has melted. All is lost."

Leonard: Thanks again for having us.
Howard: Of course. What do you guys want to talk about?
Penny: Well, now that we're engaged, we have some questions about how you handle money as a couple.
Bernadette: Told you they weren't going to ask us to swing with them.

Sheldon: Miners often sang mining songs to keep their spirits up.
Raj: You know any mining songs?
Sheldon: Just the hits.

Raj: Okay. How about a little Miley Cyrus next?
Sheldon: Who's he?

Howard: Oh, you're saying I don't do anything around here? Look at my chore chart!

Leonard: She made him a chore chart.
Penny: I see it!

Raj: So I did a little research on what the conditions are like in the mines, and the guys might be right. It sounds pretty rough down there. For starters, it's very humid and about a hundred degrees.
Sheldon: I'm from Texas and you're from India. We're no strangers to the fragrant arm pit. Next.
Raj: It's also a live mine, so there'll be dynamite explosions going off in the distance.
Sheldon: I have a lactose-intolerant roommate with a taste for ice cream. Next.
Raj: You have to be down there for twelve hours at a time.
Sheldon: Have to be somewhere.
Raj: There's no toilet, so we'll have to do our business in a bucket.
Sheldon: So it's settled? We're not doing it.

Leonard: Hear me out. I know things got a little weird last night.
Penny: Well, leaving an envelope of cash on my night-stand after sex would count as weird.

Penny: Or maybe, now that I'm no longer an out-of-work actress who can't pay for her own dinner, that makes you a little insecure.
Leonard: I can't believe you would say that. You know how insecure I am about my insecurities.

Raj: All this time, I never knew there were steam tunnels down here.
Amy: Most universities have them. When I was an undergrad, I spent three days in one pledging a sorority.
Raj: Did you get in?
Amy: No, they forgot I was there. But it really opened up my pores.

Amy: Sheldon, I'm really impressed you're willing to try this.
Sheldon: Admittedly, this brushes up against my well-known aversions to heat, small places, going below floor level, dampness, hatches, ladders, darkness, echoes, and eliminating in Home Depot buckets. That last one is quite new, but I have a feeling that's going to rocket to the top of the list.

Howard: How does it feel to know your fiance's job is to go out and flirt with doctors looking like that, while you sit here, you know, looking like this?

Bernadette: Speaking of new careers, how are things going with dark matter, Sheldon?
Sheldon: Oh, I have to say it's the most exciting time in the history of the field.
Bernadette: Oh, what's going on?
Sheldon: I started doing it.

Penny: Hang on. You guys are going to work in a mine?
Sheldon: Why not?
Penny: You had a panic attack when we went through the car wash!

Sheldon: Are they making fun of us?
Raj: Yep.
Sheldon: I miss the old days when I couldn't tell.