Penny: So what do you think.
Sheldon: A tad asymmetrical but nothing to be worried about.

Penny: Oh, that's great. You're gonna be an uncle. Uncle Sheldon.
Sheldon: No. I'll be Uncle Dr. Cooper.

Bark once if you need me to call PETA.

How can you not be happy? You're tall, thin and famous. Oh, my God. I'm jealous of Sheldon.

Penny: "Want of Understanding"? What does that even mean?
Amy: Ding, ding, ding. We have a winner.

Penny: We had one of those silly fake weddings.
Leonard: Penny ... you know those are real, right?
Penny: No, they're not.
Leonard: Yeah, they are.
Penny: No, they're not.
Leonard: Yeah, they are.
Sheldon: He's right.
Amy: They're real.
Penny: But, it didn't seem real.

Raj: That's horrible. Why would you push a cow over? They're sacred.
Penny: Oh, stop it. I've seen you eat, like, a million hamburgers.
Raj: Hey, an animal can be both sacred and delicious.

Sweetie ... every night you don't kill him in his sleep, he wins.

I may be a bad waitress, but you're a bad person. Now, want to hear the specials?

Leonard: How about that? Sheldon's being reasonable.
Penny: Yeah, it's freaking me out. I'm gonna go.

Penny: Ooh, that looks like fun.
Bernadette: Maybe you should master glue before you move on to fire.

Penny: Just you wait and see. I'm gonna romance your freakin' ass off.
Leonard: That's beautiful. Is that Shakespeare?

TBBT Quotes

Sheldon: Are you still mad about the sperm bank?
Leonard: No!
Sheldon: Do you want to hear an interesting thing about stairs?
Leonard: Not really.
Sheldon: If the height of a single step is off by as little as two millimeters most people will trip.
Leonard: I don't care—two millimeters?! That doesn't seem right.
Sheldon: No, it's true! I did a series of experiments when I was twelve; my father broke his clavicle.

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon