Adult Sheldon: I eventually made my peace with having a room to myself. And I was never truly alone, thanks to my science posse: Stephen, Albert, Richard and Arthur. But for those times when I did need to communicate with Missy, we had a system.
[Sheldon pulls on a rope which pulls a lever which knocks on Missy's wall, prompting her to pick up a walkie talkie]
Missy: [over radio] What?
Sheldon: Just testing the system.
Missy: You tested it yesterday.
Sheldon: Just because it worked yesterday doesn't mean it's working today.
Missy: It's working. Good night.
Sheldon: Good night. Sleep tight. [knocking on wall]
Missy: [over radio] What?
Sheldon: Did you know when people say "sleep tight," they're referring to when beds were made of ropes, and the tighter the rope, the more comfortable the bed was to sleep on?
Missy: Cool. Bye.
Adult Sheldon: My sister wasn't always a fan of my informative tidbits, so I didn't tell her that the entire phrase, "Good night, sleep tight, don't let the bedbugs bite" is actually from the book What They Say in New England: A Book of Signs, Sayings, and Superstitions. Until I told her. [knocking on wall]

Sheldon: Missy and I broke a lot of rules the other night, and we've received no punishment.
George: [sighs] Buddy, it's been a rough week. We're just glad you're both safe.
Sheldon: But in the absence of a divine being, society's rules are what keeps a person's morality in check.
George: Well, there you go.
Sheldon: No, y-you're not following me. If actions have no repercussions, society breaks down, everything devolves into chaos.
George: You might be overthinking this.
Sheldon: I thought so, too. Then I thought about it, and I'm not.
George: Sheldon, you had one bad night. Just let it go.
Sheldon: But... I did something wrong and I got away with it. That's not okay.
George: Buddy...
Sheldon: Socrates maintained that the man who lies to himself has an enemy living within. He's not even a person. He's just a chaos of selfish desires wrapped in an animal hide.

Sheldon: Unbelievable. It's either cartoons or men in their underwear banging their heads together.
Ricky: You complain a lot.
Sheldon: Excuse me?
Ricky: Seriously, dude, you need to relax.
Sheldon: How can I relax? I'm being held captive in a bacterial playground.

Ms. MacElroy: Now, can anyone tell me why Melville shifts the narrative voice from Ishmael to Ahab? [Ms. MacElroy waits for somebody else to raise their hand] Sheldon.
Sheldon: I have a tummyache. I'd like to see the nurse.
Derek: A "tummyache"?
Sheldon: Yes, Derek, I have a tummy and it aches. Ergo, tummyache.
Derek: Ergo?
Sheldon: It's Latin, Derek.
Ms. MacElroy: Go to the nurse.
Sheldon: And to answer your question, the shifting point of view grants the reader a broader perspective of events than typically allowed by first-person narration.
Ms. MacElroy: Where were we?
Sheldon: And "ergo" is Latin for "hence," Derek.

Missy: I know what you're doing.
Sheldon: Yes, I'm being thorough about these things so we don't fight about them down the line.
Missy: What you're doing is dragging this out because you don't want me to leave.
Sheldon: No, I'm not.
Missy: Yes, you are.
Sheldon: Do you know the phrase "pish posh"?
Missy: No, and I don't want to.
Sheldon: It's British, and it's used when someone's opinions are absurd. And you're forcing me to use it. Pish posh! Or, more authentically, [English accent] pish posh!
Missy: I'm done. I know what's mine, and I'm taking it.
Adult Sheldon: One day she said the same thing to her first husband. I like to think I prepared her for that moment.

Meemaw: Chet's gonna swing by and finalize the deal.
Dale: Wait, he's coming over here?
Meemaw: Yeah. Why?
Dale: Well, this is a very shady transaction. I mean, it should be taking place under a bridge or in a parking lot somewhere.
Meemaw: I'm handing him a cashier's check. He's giving me the keys.
Dale: He's gonna know where you live.
Meemaw: I'm in the phone book. I'm not hard to find.
Dale: Well, what if he grabs the check and just skedaddles out of here?
Meemaw: He's our age. He isn't skedaddling anywhere.

Adult Sheldon: I've always had a curious affinity for Laundromats. Perhaps it's the rows of mechanical devices dedicated to a cleaner world. Or maybe it's the hypnotic rotation of spinning clothes on their sudsy journey to a fluffy, stain-free future. Mmm, look at 'em. Where was I? Oh, yes. Laundromats. My meemaw also loved them, but for an entirely different reason.
Meemaw: Banana, banana... Whoo! [laughs]
Adult Sheldon: Personally, I don't care for bananas. It's a texture thing.