Leonard: Don't worry. You'll meet a girl someday.
Raj: No, I won't.
Leonard: Yes, you will, and she'll be beautiful, and kind and sexy and funny and everything you ever wanted in a woman.
Raj: You really think so?
Leonard: I do, and you'll fall hopelessly in love and give her your heart. And she'll take it and grind it into pathetic, little pieces.
Raj: But we'll have sex first, right?

Penny: So, um, was Leonard okay with you coming over?
Sheldon: Oh, yes. In fact, he said, I'm fine, I don't care. And he in no way said it in a manner which would lead one to believe that he was covering up feelings of anguish and betrayal.
Penny: Well, good.
Sheldon: I'm also pleased to report that he's all cried out over you.
Penny: He's been crying?
Sheldon: Oh, I believe that was something else I wasn't supposed to mention.

Penny: Oh, God, I feel terrible.
Sheldon: Do you have a stomach ache, too?
Penny: No. Why, do you?
Sheldon: No.
Penny: Why did you ask if I had one, too?
Sheldon: Just making polite dinner conversation. Your turn.

Penny: All right. So, what's new in your life?
Sheldon: Well, my new shoes are not made for running.
Penny: Have you been running?
Sheldon: No. It's just a suspicion I have.

Sheldon: Mmm, mmm, mmm.
Penny: I'm so glad you like it.
Sheldon: I do. Leonard never cooks for me.
Penny: Well, maybe that's 'cause Leonard can't cook.
Sheldon: You can't cook and you made me this.

Sheldon: I got lost.
Leonard: How could you get lost? Your phone has GPS.
Sheldon: Satellites are down. Solar flares.
Raj: There are no solar flares right now.
Sheldon: Yes, there are.
Raj: Dude, I'm an astrophysicist. If there were solar flares, I'd be all up in it.

Leonard: Oh, just come in!
Sheldon: Thanks for seeing me on such short notice.
Leonard: What do you want, Sheldon?
Sheldon: Maybe this isn't a good time.
Leonard: Tell me why you woke me up or I swear to God I will kill you.
Sheldon: Do you really think death threats are an appropriate way to begin this conversation? Sometimes your lack of social skills astonishes me.

Sheldon: And now, as promised, the tangent. "Sheldon and the Hell Hound", or "How I Lost My Hot Dogs".

Penny: Is there anything else?
Leonard: Yeah, don't let Goofy near him. He'll have nightmares and I'll have to deal with it.
Penny: What's the problem with Goofy?
Leonard: Wish I knew. He's fine with Pluto.

Penny: He's such an angel when he's asleep.
Leonard: Yeah. Shame he has to wake up.
Penny: I think we can do it.
Leonard: Smother Sheldon in his sleep? Wouldn't that be wrong?

Sheldon: Oh, Leonard, I have something for you. Per our roommate agreement, this is your 24-hour notice that I will be having a non-related female spending two nights in our apartment.
Leonard: When you say non-related female, you still mean human, right?
Sheldon: Of course. Pets are banned under the roommate agreement, with the exception of service animals, such as seeing eye dogs and, one day, cybernetically enhanced helper monkeys.

Leonard: Why is a world-renowned scientist staying in our apartment instead of a hotel?
Sheldon: Well, she doesn't care for hotels. And who can blame here? Windows that don't open, multi-user linens, keys shaped like credit cards, as if one walks around with unassigned slots in one's wallet.

Sheldon: A word of warning. My guest is a noted physicist and the leading expert on quantum cosmology, so please try to avoid wasting her time with female jibber jabber.
Penny: Female jibber jabber?
Sheldon: Shoe sales, hair styles, mud masks, gossip about your friends Brad and Angelina.
Penny: Oh, they're not my friends.
Sheldon: I'm not surprised, considering the way you talk about them behind their backs.

Sheldon: In here you'll find emergency provisions. An eight-day supply of food and water, a crossbow, season two of Star Trek: The Original Series on a high-density flash drive.
Elizabeth: What if there's a disaster that destroys all the USB ports?
Sheldon: Then there's really no reason to live, is there?

Raj: Guys, help me.
Howard: Sheldon, come on.
Leonard: Yeah, it's just one sneeze. (Raj sneezes again) You're on your own.
Howard: See you, buddy.