Sheldon: I don't know. I don't think I should.
Oscar: It's just root beer.
Sheldon: This late in the evening, my mother wouldn't approve.
Oscar: Okay.
Sheldon: Then again, I didn't think they'd let me stay, and they did, so maybe it's fine.
Oscar: I know, why don't you roll for it?
Sheldon: Ooh, good idea. Seventeen. Guess I'll have it.
Darren: We playing?
Sheldon: Hold on. Do you have a coaster?
Darren: Yeah, it's in the china cabinet.
Sheldon: And where would that be?

Mary: Shelly, you want ice cream?
Missy: Ice cream!
Sheldon: All right.
Mary: Here you go. And no runnin'.
Sheldon: In these loafers? Not a chance.
Mary: I was jokin'.
Sheldon: Okay.

Mary: Should you really be reading in the car, baby?
Sheldon: I'll be fine.
Mary: You sure? You're not the one who'll have to clean up the oatmeal back there.
Sheldon: I said I'll be fine. And it's the blueberries you should be worried about.
Mary: Well, you're in a mood.
Sheldon: Maybe because there was so much bickering going on at home that I couldn't study.
Mary: Oh, I'm sorry if our family problems are getting in the way of your schoolwork.
Sheldon: I accept your apology. [vomits]
Mary: Oh...
Sheldon: Yep, blueberries.

Sheldon: You might want to pace yourself. Our next rest stop isn't for another... 62 miles.
Dr. Linkletter: If anyone needs to go before that, I've got a trucker's buddy in back.
Sheldon: What's that?
Dr. Linkletter: A bottle you urinate in.
Sheldon: I'm sorry, are we the Donner Party?

Mary: Okay, Paige, where should we go to get your backpack?
Paige: The Hello Kitty store.
Sheldon: I would help you find it, but this subpar mall map isn't even oriented north.
Missy: Let's go.
Mary: All right, have fun at the Hello Kitty store, and meet me at the fountain in half an hour.
Sheldon: Just to be clear, there are no actual kitties, right?

Sheldon: This isn't the Hello Kitty store.
Paige: No. It's Hot Topic.
Sheldon: What's the topic, devil worship?
Missy: Hey, did you know there's a bow tie section in the back?
Sheldon: Why would they hide that in the back? [exits]

Sheldon: Can't we just do this individually?
Keith: Why are you complaining? I'm the one stuck working with a kid.
Sheldon: Hey. When it comes to physics, I'm practically a coot. Which is an old person word for someone who's old. Tell him.
Dr. John Sturgis: It is.
Sam: Let's just go to a coffee shop and get this over with.
Sheldon: I can't go now. I have to get home for my bath and bedtime. Which is also something an old person does.
Dr. John Sturgis: That we do.

Sheldon: And who says you have to be mature to go to college? I've seen Animal House.
Meemaw: You have?
Sheldon: Well, I've seen the poster. Those people are not college material.

Missy: Let's just get out of here.
Sheldon: Good. Everyone behind the counter has an earring where an earring does not belong.

Missy: You have a calculator I can borrow?
Sheldon: Yes, but I'm using it.
Missy: No, you're not.
Sheldon: [Sheldon taps his head] Why do you need a calculator?
Missy: I'm trying to figure out what to spend my money on. What are you gonna do with yours?
Sheldon: I'm glad you asked. I'm dipping my toe in the exciting world of the stock market by purchasing three shares of RadioShack.
Missy: Why?
Sheldon: Well, as a shareholder, I'll be partial owner of my very favorite company. See, when companies go public, they sell shares of stock...
Missy: I'll just buy my own calculator.

Adult Sheldon: I'd only been a shareholder for one day and I was already reveling in the giddy thrill in being part owner of a thriving tech company.
Sheldon: [on the phone] Hello, RadioShack. Sheldon Cooper, shareholder. I just wanted to let you know I'm so excited to be part of the team. While I sound young, rest assured, I'm far more intelligent than my age would imply. So if there's anything I can do to help, budgeting, product design, finding a word more impressive than "shack," I'm your man.

Adult Sheldon: My sister had taken a different path with her money.
Sheldon: What is that?
Missy: It's a cotton candy machine.
Sheldon: Why?
Missy: It's a machine that makes free cotton candy.
Sheldon: It's not free, you paid for it.
Missy: Meemaw paid for it. And it's still better than lame stocks.
Sheldon: You're going to end up with a stomachache while I get to be part of America's favorite electronics retailer.

Mary: Shelly, why don't you put your book down and watch your sister play? It's getting exciting.
Sheldon: It looks like everyone's just standing there.
George Sr.: There's two outs, bases are loaded, a-and the winning run's on second.
Meemaw: But if Missy throws one more strike, they'll win.
Sheldon: And then we can go home? That is exciting.

Sheldon: I guess I need to call and let him know what a bonehead mistake he made.
George Sr.: There's probably a nicer way to say it.
Sheldon: Did you hear how massive his neutrinos were? We're well into bonehead territory.
George Sr.: Sheldon, you don't need to be rude to him.
Sheldon: When am I rude?
[flashback to Sheldon watching a Missy combs the hair of her Cabbage Patch Doll:]
Sheldon: Stay a child as long as you can. Adulthood will not be kind to you.
[flashback to Sheldon looking at Meemaw's leg:]
Sheldon: Neat. The veins on your calf look like a road map of Texas.
[flashback to Sheldon at dinner time:]
Sheldon: Did you make this taste bad so Dad would lose weight?
[present:]
Sheldon: Fine. I'll be polite. But I still think we could go to San Antonio using Meemaw's leg.

Missy: What else you bringing her?
Sheldon: Toothbrush, toothpaste, pajamas, and these feminine napkins. Is one box enough?
Missy: Should be plenty.
Sheldon: I hope so. She's been awfully moody.
Missy: Maybe you aren't the best person to be handling this.
Sheldon: Agreed, but I'm all she's got.
Missy: I feel like you should tell Mom.
Sheldon: I promised I wouldn't.
Missy: I know, but this sounds serious.
Sheldon: I got her a toothbrush and lady pads, what more can I do?

Paige: So, did you guys get, like, assigned to look after Sheldon or something?
Darren: No, he ended up in the room next door.
Oscar: So we took him in, like a dog.
Paige: Him being so young isn't, like, weird?
Sheldon: I'm basically 50.
Darren: And we're basically 12, so it all works out.

Dr. John Sturgis: Well, our conversation about my paper resulted in a very productive couple of days. I completely rewrote the whole thing from scratch.
Sheldon: Exciting. I know credits are usually listed alphabetically, but I'm completely fine with my name going second.
Dr. John Sturgis: Sheldon, I've worked on this paper for years. I'm not putting your name on it at all.
Sheldon: But I helped you.
Dr. John Sturgis: You did, but you didn't cowrite the paper with me.
Sheldon: Is that so?
Dr. John Sturgis: Yes, it is.
Sheldon: Well, this is an outrage. After all the help I've given you, and I don't even get credit?
Dr. John Sturgis: Well, of course you are. You're getting a special thanks in the footnotes.
Sheldon: No one reads the footnotes.
Dr. John Sturgis: I do.
Sheldon: Well, I do, too, but that doesn't mean I want to be in them.
Dr. John Sturgis: Sheldon, that's where people get recognition for helping.
Sheldon: Oh, you mean the help of using my math to convert your hazy series of meanderings into a well-formed scientific thesis?
Dr. John Sturgis: I think you're overstating your contribution.
Sheldon: Well, I think you should be wearing a black ski mask because you're trying to rob me blind.
Dr. John Sturgis: Well, if anyone should be wearing an odd piece of apparel, it should be you wearing a baby bonnet, because that's how you're behaving.
Sheldon: [gasps]
Meemaw: Ready to go?
Sheldon: Very! It's a good thing she showed up, because I do not have a comeback.

Paige: You got a roommate?
Sheldon: No, it's a single.
Paige: I have a chaperone. Mona. She's, like, 30. It's the worst.
Sheldon: Why do you need a chaperone?
Paige: Maybe they think I'm, like, some kind of troublemaker.
Sheldon: As the owner of the face you punched, they're right.

Paige: You didn't stay for the Q and A.
Sheldon: I had no Q's, and therefore, needed no A's.

Adult Sheldon: While my sister was starting her business, I was trying to save mine.
Sheldon: [on the phone] Hello, this is Sheldon Cooper. May I speak to CEO John Roach, please? It's regarding our stock taking a small dip, and I'd like to hear his game plan. Well, I'm busy, too, but I made the time to call. Fine, may I please speak to your COO? CFO? CTO? Hello?