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.

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.

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

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!

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.