Nathan: Could it be used to catalog other things?
Sheldon: Yes, the applications are endless.
Nathan: So there could be a database of, I don't know, available women?
Sheldon: Available for what?
Nathan: At this point, anything.

George Jr.: Were you mad at Mom for getting pregnant?
Meemaw: Oh, yeah.
George Jr.: Did you stop talking to her?
Meemaw: Hell no, I wanted her to hear how pissed off I was. But all that being mad at her just was a waste of time.
George Jr.: What made you come around?
Meemaw: I guess you showing up.
George Jr.: I do have a natural charm, don't I?
Meemaw: You did, and then you learned to talk.

Adult Sheldon: In the world of collecting, I'm what's known as a completist. For example, I own every gauge of model train from the mighty "G," to the tiny "T." Look at how cute it is, I just want to eat it up. However, the downside of being a completist is when something's missing, it's like an itch you can't scratch, even if you own a complete set of Justice League back scratchers... which I do. In this case that itch was the comic book issue Doom Patrol and Suicide Squad Special #1.

Sheldon: What do you mean, you sold it?
Missy: Somebody gave me money, and I gave them the comic book. That's kind of how things work here.