Stephen Hawking: Hello, Sheldon.
Sheldon: Professor Hawking!
Stephen Hawking: I understand you're struggling with professional jealousy.
Sheldon: Thanks, Leonard, now he's not gonna think I'm cool.
Stephen Hawking: Don't worry, I know how you feel. I have never won a Nobel Prize.
Penny: Oh, wow, that doesn't seem fair.
Stephen Hawking: It's fine. I've been on The Simpsons.
Sheldon: How do you deal with the success of your colleagues?
Stephen Hawking: I remind myself every scientific advancement is a victory. Also, I was on Star Trek.
Leonard: (To Penny) Oh, it was a good one. He played poker with Sir Isaac - You don't care.
Stephen Hawking: Don't waste your time on jealousy, Sheldon, you're too brilliant.

Bernadette: Besides, Penny and I are having a girl's night tonight.
Amy: Girls night, what does that entail?
Bernadette: Oh you know, girls get together hang out share girl talk.
Amy: I'm a girl.
Bernadette: Oh well maybe you could join us. I'll ask Penny.
Amy: No need, Penny and I are very close.
Leonard: You are?
Amy: Yes, In fact our mensies are synchronized.

Penny: You locked them in your basement?
Dr. Lorvis: Well, they're not locked in. The door just sticks.
Penny: Okay, so how do they unstick it?
Dr. Lorvis: They'd need the key.

Penny: Okay, you can't just go chasing after every girl who's nice to you.
Dr. Lorvis: Well, that's not what Sheldon says, and he seems to know his way around the ladies.

Howard: What do you think?
Barry Kripke: That ... is ... hilarious! Give me the remote control. I want to drive him into the girls' restroom.
Howard: All right, we're done. It's offensive.

Amy: Bert is studying the way microbes in rocks can survive in extreme environmental conditions.
Leonard: They say it could be a potential indicator of life on other planets.
Penny: You know what, I've met Bert. Isn't he an indicator of life on other planets?
Sheldon: You used to make those jokes about me. Now everything's Bert, Bert, Bert.

Raj: Well, I'm glad to see you moving forward.
Sheldon: Bert did quality research. And he deserves whatever accolades he receives.
Howard: What is going on? (To Leonard) Did you upgrade his software last night?
Leonard: I think he might be learning on his own.
Raj: Then the robot uprising has begun.