Raj: Anyway, speaking of Daddy. I had a very strange conversation with him. He said he couldn't afford to send me money any more because of his active social life.
Mrs. Koothrappali: What does that mean, "active social life"?
Raj: Well, let's not talk about him or whatever shenanigans he may or may not be up to. Let's talk about you.

Leonard: So you really think they liked it?
Penny: Oh, sweetie, it was the best speech I--
*Drone comes through the door, knocking Penny and Leonard off their feet*
Sheldon: Don't worry, everyone in here is safe.

Raj: Hello, mommy.
Mrs.Koothrappali: Hello, Rajesh. What a nice surprise.
Raj: Well, I've been thinking about you. Are you happy, mommy?
Mrs.Koothrappali: Such a sweet boy for asking. I can't believe you come from the poison seed of your father.

Mrs. Koothrappali: Rajesh, is your father seeing someone?
Raj: All I know, Mummy, is that he's a single wealthy doctor, and now, for some reason, there's no money for your little boy.

Sheldon: We did it! Oh! God, if it's this much fun to rotate, imagine when we fly it.

Raj: Hello, Daddy.
Dr. Koothrappali: What did you say to your mother?
Raj: Nothing. I was just calling to check in, make sure she's doing okay.
Dr. Koothrappali: Well, after talking to you, she seems to think I'm some sort of playboy.
Raj: Really? I don't know where she'd get an idea like that.

Dr. Koothrappali: I'm tired of indulging your foolish lifestyle. It's time you learned responsibility. And the only way to teach you that is to cut off your allowance.
Raj: No, Daddy, no! There are lots of other ways to teach me responsibility. I know, you can give me an egg and make me take care of it for a week.

Howard: Just flip the switch until the lights on the drone change to solid yellow.
Sheldon: All right, that seems simple enough. Initiating calibration sequence. *flips switch rapidly* One, two, three, four, five, six, seven, eight, nine, ten. *lights on drone turn solid yellow* Well, I suppose ten is technically "at least ten." But they're still getting at least one angry letter.

Mrs. Koothrappali: Well, however much money your father was giving you, I'll give you more.
Raj: Thank you, Mummy! I love you! *to Sheldon and Howard* Helicopters for everybody!

Sheldon: You can't return it. Howard wiped his bottom with the warranty.
Raj: What?
Sheldon: I think metaphorically. But he was in the bathroom for a while.

Leonard: I'll take my chances.
Sheldon: Fine. I wonder if they make "I told you so" cards in Braille.

Raj: The problem with commencement speeches is that they're boring. Ooh, do you own a T-shirt cannon?
Howard: Why would he own a T-shirt cannon?
Raj: I don't know. Why do I own one?

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.

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.

Dr. Koothrappali: No, my mind is made up. Starting now, you're on your own.
Raj: But, Daddy, I miss my family so much, and with you and Mummy getting a divorce, I feel sad and empty. Buying a little toy every now and then helps me fill that void. So while I can't hug you every day, flying that helicopter really makes--
Dr. Koothrappali: I'm cutting you off.
Raj: Just to be clear, financially or mid-sentence?