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: I had a plan. I kept leaving Dove bar wrappers around to explain any weight gain.
Amy: Where did you get empty Dove bar wrappers?
Bernadette: From all the Dove bars I ate! I'm pregnant! Try to keep up!

Stuart: Oh, so she's good enough for Howard but not for me?
Howard: Yeah.
Bernadette: Yeah. Go have weird relationships with your own mother and cousin. This is his turf.

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

Raj: It's too late. He's been murdered by someone in this room. Welcome to another classic Koothrappali murder mystery dinner.
Amy: I'm leaving.

Penny: You really going to lie on the floor and pretend to be dead all night?
Stuart: What do you think I was going to do at home?

Sheldon: Aren't you gonna come with me?
Howard: While you confront your mother about her sex life? I'd rather go back to that bar in assless chaps.