Mary: Shelly, you okay?
Sheldon: No.
Mary: You want to talk about it?
Sheldon: No.
Mary: You want me to leave you alone?
Sheldon: No. I thought Libby and I were equals, but she thinks of me as a child.
Mary: I'm sorry, baby.
Sheldon: Calling me that isn't helping right now.
Mary: Right. Sorry.

Mary: You smoke marijuana?
Sheldon: Mom!
Libby: No, ma'am.
Tam: Just say no. [Mary shoots him an unimpressed look]

Mary: I hope you'll forgive me, I just wanted to meet the person driving my nine-year-old son to Houston.
Libby: I understand.
Tam: Me, too.
Mary: I wasn't talking to you, Tam.

Libby: You have a beautiful home.
Sheldon: Thank you.
Mary: Thank you.

Adult Sheldon: I've often been accused of being stubborn and willful, but sometimes it works like gangbusters.

Mary: All right, I'll make a deal with you.
Sheldon: I'm listening.
Mary: You can go to Houston with your friends, but I want to meet this girl first.
Sheldon: That's very reasonable. Thank you.
Mary: You're welcome.
Sheldon: Now, can you please reach the dryer sheets? I get vertigo on the step stool.

[Sheldon is throwing laundry in the dryer]
Mary: What am I supposed to do with this?
Meemaw: Send him over to my house before he runs out of gas.

George Jr.: You missed a spot, weirdo.
Sheldon: I see it.

George Sr.: Sheldon, I need to get in there.
Sheldon: Poop at Meemaw's!

Adult Sheldon: Anger is an ugly emotion. Unbridled rage even more so. And when it bubbled up inside me, I channeled it the only way I knew how. I cleaned the house like a man possessed.

Mary: I gave it a lot of thought, and I'm afraid I can't allow you to drive to Houston with your friends.
Sheldon: Why?
Mary: Well, honey, you're still a little boy.
Sheldon: I don't think it's right. I'm not a little boy. I'm a high school student.
Mary: I'm sorry, I made up my mind. If you'd really like to see this movie, I'm willing to drive you. Maybe we could meet your friends there.
Sheldon: I don't want my mommy to take me.
Mary: Well, then, you're not going.

Mary: Hey. I want to talk to you.
Sheldon: Hold on. Let me bring this into the station so as not to disappoint my commuters. They'd like to get home to their families.

Mary: I don't want my little boy in some car with a teenager behind the wheel.
George Sr.: All high school kids drive.
Mary: Yeah? Well, I don't like it. Would you let me get in a car with a stranger when I was young?
Meemaw: Well, nobody ever asked you out, so it didn't really matter.

Mary: And now he wants to see a movie in Houston with them.
Meemaw: Why Houston?
Mary: I don't know, it's in MixMax or something.

Libby: You know they're playing a space shuttle movie at the Museum of Natural Science. It's in IMAX.
Tam: I heard about that. The screen is supposed to be huge.
Libby: They also have a great geology exhibit.
Sheldon: Well, it's in Houston. How are we gonna get there?
Libby: I'll drive.
Tam: Oh, I would love to see a movie with you.
Sheldon: Don't you need to ask your parents first?
Tam: No, Sheldon, I don't.
Sheldon: But won't they worry where you are?
Tam: They'll be fine. Count me in.
Sheldon: Glad you're not my son.

Sheldon: I think the best space shuttle name so far is Discovery.
Tam: What about Challenger?
Sheldon: Too in-your-face.
Libby: Atlantis?
Sheldon: A fictional island that couldn't stay afloat? I don't think so.
Tam: There's the Enterprise.
Sheldon: There is, and it's on Star Trek, where it belongs.

Adult Sheldon: Whoever said the quickest way to a man's heart is through his stomach did not consider his tiny bladder.

Sheldon: Thank you.
Libby: Happy to help.
Sheldon: Is there any chance you'd be available to stand guard at 1:45?
Libby: You have a bathroom schedule?
Sheldon: You don't?

Libby: I don't think so.
Doug: I gotta pee.
Libby: That's your problem. Keep moving.

Libby: What are you doing?
Sheldon: I need to use the bathroom, but it can get uncivilized in there.
Libby: Anyone in there now?
Sheldon: I don't know. I was afraid to find out.
Libby: Anybody in here? Go ahead. I'll stand guard.
Sheldon: Where have you been all my life?