Sheldon: Just out of curiosity, why didn't you ask Leonard for advice about this?
Penny: Urgh, because I already know what he'll say. Wah, wah, wah. You shouldn't do it.
Sheldon: Ah, it's just like he's here.

Raj: So, I'd like to try a technique. When no one gets streamrolled. When you talk, instead of bringing up a new idea, respect what was just said by building on it.
Sheldon: Building on that, we should order dinner.
Leonard: How is that building on what he just said?
Howard: Building on what Sheldon said, I could go for Chinese.
Raj: Hang on. Building on what Leonard said, no one built on what I said.
Sheldon: Building on building on that, there's a new build your own pizza place on Colorado.
Leonard: Building on that, I'd like to remind you I'm lactose-intolerant.
Howard: I saw the menu. They have Soya cheese.
Sheldon: Ha! You didn't say building on. You're out.
Leonard: It's not Simon Says.
Raj: You're missing the point, Sheldon.
Sheldon: You're out and you're out. I win. Who wants pizza?

Sheldon: Greetings from Planet Earth. Just turn left at Alpha Centauri. You can't miss it.

Amy: Leonard, have you ever given a high school commencement speech before?
Leonard: No. It's pretty exciting.
Sheldon: Aren't you afraid of being blinded?
Leonard: How would I be blinded?
Sheldon: At the end of the ceremony, all the students throw those pointed hats in the air. It's all "Pomp and Circumstance" until someone loses an eye.

Leonard: Well, I'm excited to show you around.
Penny: You think we'll have time to visit your mom over there?
Leonard: Yes. We'll also have time to put my junk in a garlic press, but I'm not doing that either.

Howard: Okay, the WiFi extender is on, the camera's on, they're both on the same network. We should be getting an image.
Sheldon: All I see is a black screen, and my own reflection. I look sad.

Raj: I have to return the helicopter. My father-- What did you do?!
Sheldon: Don't worry. He went to MIT. He can solve any problem. As long as it doesn't originate in a Russian man's colon.

Bernadette: Why don't you just call tech support?
Sheldon: Hey!
Howard: Whoa!
Raj: Not cool!
Bernadette: What?
Howard: There's two kinds of people in this world. Those who call tech support and those who make fun of the people who call tech support.

Howard: All right, the power supply is reconnected. I think we're back in business. Let's just run a few tests before we take it outside. Sheldon, we got WiFi?
Sheldon: Check.
Howard: GPS?
Raj: Check.
Howard: Battery charged?
Sheldon: Check.
Bernadette: Four hours of our lives gone? Check.

Howard: All right. All systems go. In five...
Boys: ...four, three, two, one.
*An electrical crackle is heard and smoke comes out of the drone*
Sheldon: That's what my train used to do.

Tech Support: Tech Support. Can I help you?
Sheldon: Yes, it's a robot uprising! Call the police!

Amy: Sure, his mom gets roses. When I want them, they're a "bouquet of severed plant genitals."
Sheldon: You act like I didn't get you that mushroom log on Valentine's Day.
Amy: He's right. Roses die, but a moist rotting log will pump out mushrooms for two or three magical years.

Leonard: I change my answer. It's amazing. It's hot. We can barely keep our hands off each other.
Beverly Hofstadter: Seems odd to try and impress your mother with your sexual prowess. But then, you always did have that unresolved Oedipal complex.

Beverly Hofstadter: I read your paper. It was very impressive.
Sheldon: Oh, thank you.
Leonard: We just spent two hours in traffic. Did you think to mention to me that you liked our paper?
Beverly Hofstadter: Of course I did, but it's a mother's job to make sure her child's self-esteem is not dependent on anyone's approval.
Leonard: That's so sweet, you think I have self-esteem.

Mary Cooper: How was your flight?
Beverly Hofstadter: Very pleasant. And yours?
Mary Cooper: Lovely. Almost as if someone - not saying who - was watching over the plane.
Beverly Hofstadter: You're kidding, right?
Leonard: Subtle, mom, real subtle.