Bernadette: What if you fell? What if you got hurt? I don't want to raise two small children and one large vegetable.

Bernadette: I can't believe you were sneaking around my back like a child.
Howard: I just didn't want you to worry.
Bernadette: No, you just didn't want to get caught.
Howard: I'm sorry, but you telling me what I can and can't do is pretty damn emasculating.
Bernadette: Emasculating? You were about to ride bitch on a moped with another man.

Howard: It's a scooter. It can go on some highways.

Sheldon: Bebe.
Bebe: What's wrong?
Sheldon: Nothing. I just wanted to make sure it worked. Also, I changed my mind. It's fun to say your name. Bebe. Bebe. [Bebe closes the tank] Bebe. Bebe. Bebe. Bebe.

Bernadette: Hey, what you got there?
Howard: Oh. [stammers] Just tossing out this old helmet I don't need. I thought you were at the park.
Bernadette: We were. The kids got sleepy.
Howard: Great story. I need to make a phone call.
Bernadette: Howard, why do you look all guilty? Like when I catch you deleting your browser history?

Sheldon: [inner monologue] Hmm, this is nice. It's sort of like floating in space. But better because my eyeballs haven't frozen.

Amy: [inner monologue] Wow, this is really dark. There's no difference between my eyes being open or closed. Open, closed. Open, clo- Nope, same thing.

Sheldon: [inner monologue] Look all the infinite Mandelbrot sets. Here a brot, there a brot, everywhere a Mandelbrot.

Sheldon: That tank was amazing. It was like Disneyland, but the rides were in 35 dimensions. And instead of Mickey, I had my picture taken with the concept that time is an illusion.

Leonard: Hey, buddy, how you feeling?
Sheldon: [moans] Aw. Five more minutes?
Penny: Hey, Amy. Relaxed?
Amy: I'm a failure! I can't do this!
Sheldon: Can someone close her lid? She's kind of harshing my mellow.

Howard: Hey. You still mad?
Bernadette: Are you still a jackass?

Sheldon: Hang on.
Amy: What-what are you doing?
Sheldon: I'm googling what to do when someone's freaking out. Huh. Uh, whoa, it says here that a walk can be calming. Bye.

Amy: That's great. I'm so happy for you.
Sheldon: Uh, yeah, a little constructive criticism: You're saying you're happy, but you're using your mean voice.
Amy: Thanks for pointing that out. Now you got it.

Amy: Sheldon, I'm freaking out.
Sheldon: Well, is this still about the Nobel Prize?
Amy: Yes, it's about the Nobel Prize!
Sheldon: And back to the mean voice.

Amy: So you've alienated everyone we need to help us?
Sheldon: Well, Amy, if I had known that someday we'd need them, I would never have insulted them.
Amy: Well, that doesn't make it better.
Sheldon: Oh. Well, it's also not true.