Penny: Hey, you ready to go?
Leonard: Yeah, I guess.
Penny: What's the matter?
Leonard: Honestly? It's a little strange having dinner with your ex-boyfriend, and it's not like we have a lot to talk about.
Penny: What? He loves you, okay? And he's interested in your work. You could talk about the infinite perspective -- I swear I know it.

Howard: Now, this is rare. I don't know which one of you I want to stop talking first.
Sheldon: The theory is that if you really tax your brain, the neurofibers will become thicker and the glial cells more lustrous.
Raj: Like JLo's hair.
Howard: Boy, it is neck and neck right now.

Sheldon: I've been thinking about our recent humiliation.
Leonard: You're gonna have to be more specific.
Sheldon: At the hands of those teenagers.
Leonard: More.
Sheldon: Boy teenagers.
Leonard: Oh, the video game. Yeah, that was bad.

Leonard: How is super-aging any different than, like, doing crossword puzzles?
Sheldon: Well, it's not just doing simple cognitive tasks. You need to push your brain out of its comfort zone and reach mental exhaustion.
Leonard: I drive you to work every day, my brain must look like the Hulk.

Sheldon: I started doing some reading on cognitive vitality, and I came across an area of research called "super-aging."
Raj: You know who's a super-ager? Jennifer Lopez. Like, what is her secret?

Raj: If you really want to challenge yourself, you could learn to speak Hindi.
Sheldon: Jab mein aat saal ka tha Maine seekha tha.
Raj: Could you say that in English? I actually, I never learned Hindi.

Penny: Uh, what's new?
Zack: Oh, tons of stuff. Put artificial grass in my backyard, got engaged, had a scary mole that turned out to be Sharpie.
Penny: Well, congratulations.
Zack: That's what my dermatologist said.
Penny: No, on getting engaged, good for you.
Zack: Oh, thanks.

Zack: How about you? Hey, how's Leonard? Is he still smart?
Penny: Yes, yes, he's working for the government on an infinite persistence gyroscope. Of course, the first time I say it right, he's not even here.

Zack: Hey, we should all have dinner sometime.
Penny: Uh, yeah, sure, I'll check with Leonard.
Zack: Cool, I'll check with Sara. (To his phone) Sara, pull up my calendar. It never works for me.

Zack: Penny?
Penny: Oh, Zack. Hey.
Zack: What are the odds of running into you here?
Penny: Well, it's a bar, so pretty good.

Sheldon: I guess I just need to face it, I'm no longer a wunderkind. Now I just wonder what's for lunch.
Leonard: Hot dogs.
Sheldon: Yay.

Howard: Okay, challenge them again.
Leonard: Doing it right now. Oh, they can't. There's an important Little League game tomorrow.
Howard: No wonder they beat us, they're jocks.

Sheldon: No, but it's not just video games. I downloaded the new O.S. for my phone. Took me a week to stop accidentally texting kissy faces to everyone.
Howard: Oh, so our love is not real?

Sheldon: What happened to me? I used to excel at these things.
Howard: Kids are always better at video games.
Sheldon: Well, I don't like it.
Leonard: If it makes you feel better, you still dress like a child.

Raj: Well, I know how you feel. I tried one of those electronic Japanese toilets, practically shot myself across the room.