Stuart: I mean, what can I do? I get so nervous around women.
Penny: Well, you're talking to us now. I mean, you don't seem nervous.
Stuart: Well, that's 'cause I'm doing that trick where you imagine the audience is naked. By the way, thumbs up, ladies.
Amy: Do you not hear how creepy that sounds?
Stuart: It was a joke.
Bernadette: Was it?
Stuart: No, I'm still doing it.

Stuart: Oh, Sheldon, I'm afraid you couldn't be more wrong.
Sheldon: More wrong? Wrong is an absolute state and not subject to gradation.
Stuart: Of course it is. It's a little wrong to say a tomato is a vegetable, it's very wrong to say it's a suspension bridge.

Howard: Hang on, I know a place where you could you stay and earn some money at the same time.
Stuart: Great!
Howard: I just have to warn you: it will involve humiliation, degradation and verbal abuse.
Stuart: So, what's the catch?

Bernadette: Hey, Stuart.
Stuart: *startled* Hey.
Bernadette: Sorry, did I startle you?
Stuart: Yes, but at this point pretty much any customer does.

Howard: My name is Inigo Montoya. You killed my father. Prepare to die.

Raj: My name is Little Orphan Annie. You killed my father. Prepare to die.
Howard: My name is Darth Vader. I am your father. Prepare to die.

Bernadette: Stuart took that rejection like a pro.
Penny: Well, he knew he was on the breast cam.
Amy: I don't have much practice turning men down. It wasn't so much fun.
Bernadette: Oh, you get used to it. Some guys you have to turn down over and over.
Penny: And sometimes we marry them anyway.