- Sheldon Cooper: I've never thought I'd ever get the chance to give you this. Good job.
- [Puts a sticker on Leonard's shirt]
- Leonard Hofstadter: You're giving me a sticker?
- Sheldon Cooper: Not just a sticker. It has a kitten that says "Me-wow!"
- Leonard Hofstadter: I'm not a kindergardner.
- Sheldon Cooper: All right, I'll take it back.
- Leonard Hofstadter: Hey, I earned this, back off!
- Sheldon Cooper: Can I respond now?
- Leonard Hofstadter: Do it.
- Sheldon Cooper: You mess with the bull, you get the horns. I'm going to show this man just how horny I can be.
- Leonard Hofstadter: [Takes away phone] Okay, someone else do it.
- Stephen Hawking: Hello there.
- Sheldon Cooper: Mr. Hawking?
- Stephen Hawking: Oh, brother. You should see the looks on your faces.
- Sheldon Cooper: You really didn't like our paper?
- Stephen Hawking: I liked your paper. The premise is intriguing.
- Leonard Hofstadter: Then why did you write those comments?
- Stephen Hawking: When you're stuck on a chair for forty years, you'd get bored too.
- Leonard Hofstadter: When you talk like that, it makes me want to take you on this table right now.
- Penny: And we both know from past experience that this table won't support both our weights.
- Leonard Hofstadter: You worked out all the math?
- Sheldon Cooper: I did more than work out the math. I wrote a paper.
- Leonard Hofstadter: You wrote a paper on my idea?
- Sheldon Cooper: I wrote a paper on our idea.
- Leonard Hofstadter: Since when is it our idea?
- Sheldon Cooper: Since I added some Sheldony goodness and baked it in the E-Z Bake Oven of my mind.
- Raj Koothrappali: I hate how mean everyone is on the internet.
- Howard Wolowitz: The anonimity makes people feel they can say things they'd never say to someone's face.
- Sheldon Cooper: That's funny. I never have any trouble saying what I think to someone's face.
- Leonard Hofstadter: Really? I never noticed that about you.