Bernadette: Relax, you know Leonard's always been crazy about you. It's gonna be great.
Penny: I know, but we've finally gotten to a place where we can hang out without it being weird. And what if something goes wrong? Then what?
Amy: Guess it'll just be Sheldon and me going on a double date with Howard and Bernadette.
Bernadette: Sure, we'd love that. (To Penny) Change your clothes, we got a lot riding on this.

Bernadette: Gosh, Amy. I'm sensing a little hostility. Is it maybe because like Sheldon's work, your sex life is also theoretical?

Bernadette: (Shouting from the bathroom) How many times do I have to tell you to replace the toilet paper when it's empty?
Howard: I'm in the middle of something.
Bernadette: So am I!

Leonard: You don't go into science for the money.
Bernadette: Speak for yourself. Last month my company both invented and cured restless eye syndrome. Ka-ching, ya blinky chumps!

Bernadette: Boy, I don't know if I could be friends with Howie if we broke up.
Howard: Why not?
Bernadette: I'm a very vengeful person.
Howard: Really?
Bernadette: With access to weaponized smallpox.

Sheldon: I know he (Spock) wouldn't care for an outburst of human emotion, but oh goodie, oh goodie, oh goodie!

Sheldon: And now that I have some wood, I'm going to begin the erection of my settlement.