Paige: Hey, can I drive?
Missy: Better not. My dad'll be pretty mad if something happens to his truck.
Paige: Like what, if somebody stole it?
Missy: Oh, my God, I'm a criminal.
Paige: Yeah. It's pretty cool, right?
Missy: I'm gonna be in so much trouble.
Paige: Only if you go back.
Missy: I guess you're right.

George: Studying for a test?
Sheldon: Studying to take the bar exam. Meemaw's going to need a smart lawyer. By the time we find one, I could just learn how to do it.
George: Seriously?
Sheldon: Common law was invented by a bunch of English farmers in the Middle Ages. I think I can hack it.

Sheldon: Do you think a Spock could become a Kirk?
Meemaw: Well, in my experience, most people stay the miserable bastards they are their whole entire life. But I have seen some folks change.

Meemaw: Okay, here you go. I got you a shovel and a bucket and some gloves.
Sheldon: Did you check the gloves for spiders?
Meemaw: Is this my first day as Meemaw?

Sheldon: I'm enjoying this, but I'm having trouble with the onomatopoeia.
Tam: The what?
Sheldon: The onomatopoeia. Words that imitate sounds. "Kthoom" "Snikt" "Bamf" Writers shouldn't make up words.
Tam: Somebody made up "onomatopoeia".
Sheldon: You challenge me. I like that.

Sheldon: I wonder if we'll get to meet an astronaut.
Meemaw: I remember when I was a teenager, I had the biggest crush on John Glenn. I would've given it up for him no problem.
Mary: Mom.
Missy: Given what up?
Mary: Her allowance. Just eat.

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

Mary: She looks harmless.
Meemaw: She's cute. So she probably gets away with stuff. I'm like that.

Sheldon: I've been corresponding with Dr. John Sturgis at East Texas Tech. He said I could audit his course.
Meemaw: You're pen pals with a stranger? Is this okay?
Sheldon: He's not a stranger. He's a famous scientist. He carbon-dated the oldest human feces.
Meemaw: That ain't strange.

Meemaw: What do you think? I won it bowling. It was either that or a Crock-Pot, and I already got three of those, so I thought I'd surprise you.
Sheldon: No, thank you. Video games are for children.
Meemaw: Sheldon, you are a child. I just blew the hot off your SpaghettiOs.
Sheldon: I'm sorry, Meemaw, I just don't think it's a very productive use of my time.
Meemaw: You're a man of science. Aren't you interested in doing a little research here?

Georgie: Tell me, Sheldon.
Sheldon: It occurred to me that a good way to generate a positive cash flow would be to curate popular songs and make them available in a digital form. Possibly on a small device that could also be used as a phone or even a camera.
Georgie: Right. [mocking] A phone, camera, music machine. Get out of here.

Adult Sheldon: [v.o.] We often regret the things we don't say. There's a lot of things I wish I had said to my dad while he was around. That I appreciated him. That I loved him. Which is why I'm grateful for the times I did tell him how I felt.
Sheldon: Tonight was fun.
George: Yeah? Why is that?
Sheldon: Dr. Sturgis was here. Everybody talked about science. It was nice.
George: It was.

Adult Sheldon: I've always loved trains. In fact, if my career in theoretical physics hadn't worked out, my backup plan was to become a professional ticket taker. Or hobo.

Sheldon: Just think. You'll have this table all to yourself.
Tam: Actually, I joined the jazz band. Those guys have their own table in the cafeteria.
Sheldon: Oh.
Tam: They're pretty cool. The drummer's even got a goatee.
Sheldon: Well, I'm glad I knew you before you became a heroin addict.

Pastor Jeff: Because the first day had just begun.
Sheldon: So, before the Big Bang?
Pastor Jeff: There was no Big Bang. There was only the Word.
Sheldon: Was the word "kaboom"?