Dr. Linkletter: We don't need open strings. We just connect them to a D-brane.
Sheldon: But your theories can't recreate the known symmetries of the real world.
Meemaw: Everything okay in here?
Sheldon: More than okay. We're having a spirited debate on superstring theory.
Dr. Linkletter: Very spirited.
Meemaw: Well, you ready to go home?
Sheldon: Yes. Unless Dr. Linkletter-
Dr. Linkletter: He's ready.
Meemaw: Well, I guess we'll see you next week.
Dr. Linkletter: Sounds good. No wonder Sturgis went crazy.

Sheldon: Dr. Linkletter, I need to talk to you.
Dr. Linkletter: Great.
Sheldon: Do you think you could get me access to the telescope room? I want to search for exoplanets that could support life.
Dr. Linkletter: Are you feeling homesick?
Sheldon: Are you implying that I'm from another planet?
Dr. Linkletter: Yes.
Sheldon: Compliment accepted.

Sheldon: Now, about the telescope room, I was watching Star Trek and it got me thinking...
Dr. Linkletter: Sheldon, searching for life on other planets isn't serious science. Leave that to the tinfoil hat brigade.
Sheldon: But statistically, given the number of stars and planets, it's likely we could find one capable of supporting life. And if we did, it would be the greatest scientific discovery of all time.
Dr. Linkletter: Yes, and if I had fruit on my head, I'd be Carmen Miranda.
Sheldon: I'm not familiar with that reference.
Dr. Linkletter: She sang and danced with fruit on her head.
Sheldon: Why would she have fruit on her head?
Dr. Linkletter: I don't know, in case she got hungry. It's not gonna happen, Sheldon!

Sheldon: Dr. Linkletter, I need to talk to you.
Dr. Linkletter: Are we in my office?
Sheldon: No.
Dr. Linkletter: Then these are not my office hours.
Sheldon: Are you using my love of schedules against me?
Dr. Linkletter: [chuckles] Oh, yes.
Sheldon: Well done.

[Sheldon is chuckling as he stares at a blank screen]
Missy: What are you doing?
Sheldon: Watching last week's Professor Proton in my mind.

George: Hey, Hubert. Was Sheldon in class today?
Mr. Givens: Nope. Haven't seen him all week.
George: Weren't you gonna say anything?
Mr. Givens: I didn't want to jinx it.

George: So he hasn't been in any of your classes?
Ms. Ingram: Mm-mm, not a one.
Ms. MacElroy: Nope.
George: But I bring him here, I take him home he's got to be somewhere in the building.
Ms. Ingram: Mm, I might've seen him in the library. But at this point, I sometimes think I see him when I'm alone in my house.
Ms. MacElroy: Like that creepy Chucky doll in the movies?
Ms. Ingram: [laughs] Exactly!