Raj: Thanks again for letting me crash girls' night.
Penny: Are you kidding? You brought fancy wine and made fondue. I've slept with guys for less.
It's a joke. Based on real events.

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Raj: [to Amy] If you were having Sheldon's baby, would you really want him in the room?
Penny: Yeah, if he's in the room when they're making the baby, I'll give you $10.

Penny: I mean, who even reads Scientific American?
Leonard: It's kind of a big deal.
Penny: If it's such a big deal, how come the biggest celebrity they could get for the cover is a molecule?

Bernadette: We can't all be Cinderella.
Amy: Then how do we decide?
Bernadette: Well, it's simple. This was my idea. I'm driving. I'm Cinderella. You bitches got a problem with that, we could stop the car right now.

Sheldon: (Typing into a search engine) How do I get 12-year-old schoolgirls excited?
Howard and Leonard: No!

Bernadette: Every one of you has the capacity to be anything you want to be.
Penny: Unless you want to be Cinderella.
Bernadette: Come at me. See what happens!