Penny: Well, where is he?
Amy: Sheldon?
Leonard: I'll check his room.
Sheldon: Surprise!
Penny: Oh, my God!
Sheldon: Just one example of how birthdays can be terrible. Now, can we please drop this subject and pick a new one? Yeah, I suggest "how thick can a soup get before it becomes a stew?" You know, the answer, it may surprise you.

Amy: Can you please just tell me why?
Sheldon: Fine. As you know, I have a twin sister with whom I obviously share a birthday. Every year we'd have a party. No one I invited would ever come, because they didn't like me.
Amy: I'm sorry.
Sheldon: Oh, that part wasn't so bad. I didn't like them, either. But then I'd inevitably spend the whole day being tortured by my sister's friends.
Penny: Oh, you poor thing.
Sheldon: When I was six, they told me Batman was coming to my party. I waited by the door for hours. Closest thing to Batman I saw was when a robin flew into the window.

Sheldon: Is there a reason I had to leave my own apartment?
Amy: Well, I think they just want you to see it for the first time all decorated.
Sheldon: But who's gonna tell them they're doing it wrong?
Amy: Well, I'm sure they'll ask you to give a speech, and that's when you just tear 'em a new one.

Amy: Are you all right?
Sheldon: No, I just I got a little light-headed.
Amy: Oh, d-do you need a minute?
Sheldon: No. No, if I can walk past that pet shop with the parrot in the window, I suppose I can do this.

Leonard: Okay, I'd better go in there and talk to him.
Amy: Well, don't you think I'm the one who should go in?
Leonard: No offense, but I've known the guy a really long time.
Amy: Well, I've, you know, seen him without pants on.
Leonard: Again, no offense, but so have I.
Amy: Well, he's seen me without pants on.
Leonard: Again, -
Penny: Okay, this is ridiculous.

Raj: And it was Gandhi who said, "Live as if you were to die tomorrow. œLearn as if you were to live forever."
Sheldon: And it was Sheldon Cooper who said "Let's speed this up. A lot of people want to talk."

Adam West: So, who's taking me home?

Howard: You have any idea what you're getting Sheldon for his birthday?
Raj: He's been fascinated with dinosaurs lately. Maybe we could get him a fossil.
Leonard: Well, just don't get anything Jurassic. He feels like that whole chunk of time has gone Hollywood.

Leonard: Are you crazy? How can you put Michael Keaton in front of Christian Bale?
Adam West: Oh, please. Even my poodles know Bale's overrated.