Leonard: If we do get a new friend, he should be a guy you can trust. You know, a guy who has your back.
Wolowitz: And he should have a lot of money and live in a cool place down by the beach where we could throw parties.
Sheldon: And he should share our love of technology.
Wolowitz: And he should know a lot of women.
Leonard: Okay, let's see: money, women, technology. Okay, we're agreed. Our new friend is going to be Iron Man
Sheldon: So, you're saying that friendship contains within it an inherent obligation to maintain confidences?
Penny: Well, yeah.
Sheldon: Interesting. One more question—and perhaps I should have led with this—when did we become friends?
Ramona: You're not going to Halo night
Sheldon: Yes, I am. It's Wednesday. Wednesday's Halo night.
Ramona: Didn't a great man once say, "Science demands nothing less than the fervent and unconditional dedication of our entire lives"?
Sheldon: He did.
Ramona: And who was that great man?
Sheldon: Me. Sorry, Leonard.
Leonard: Seriously? You're not coming?
Sheldon: You heard her. How can I argue with me?
Penny: Wow, you've got a lot of money in there.
Sheldon: That's why it's guarded by snakes.
Leonard: I just don't get what she sees in Stuart, we're practically the same guy
Sheldon: ...Stuart is taller, artistic, self employed, and most importantly, gets 45% off comic books
Sheldon: You have to check your messages, Leonard! Leaving a message is one-half of a social contract, which is completed by the checking of the message. If that contract breaks down, then all social contracts break down and we descend into anarchy.
Leonard: It must be hell inside your head.
Sheldon: At times.
Sheldon: You won the Nobel prize, what, three years ago? So you must deal with a whole lot of "what has Smoot done lately?" My thought is we continue my research as team, you know, Cooper-Smoot, alphabetical.. When we win the Nobel Prize, you'll be back on top
Dr. Smoot: With all due respect, Dr Cooper, are you on crack?
Sheldon: Fine, Smoot-Cooper, what a diva
Sheldon: At this point I should inform you that I intend to form my own team, and destroy the molecular bonds that bind your very matter together, and reduce the resulting particulate chaos to tears.
Leonard: Well, thanks for the heads up.
Sheldon: Oh, one more thing... It's on, bitch.
Sheldon: Your robot is inferior and it will be defeated by ours because ours exceeds yours in both design and execution. Also, I'm given to understand that your mother is overweight.
Raj: Oh, snap.
Sheldon: Now of course if that is a result of a glandular condition and not sloth and gluttony, I withdraw that comment.
Raj: What difference does it make, fat is fat!
Sheldon: There are boundaries!