Adult Sheldon: There were plenty of reasons to be happy my sister moved out. She snored, she teased me. She left her dirty clothes everywhere. Clearly, I was better off without her.
[After Sheldon lays awake looking at the boxes where Missy's bed used to be, he goes and knocks on her bedroom door. Missy opens the door:]
Sheldon: Can I sleep on your floor?
Missy: Come on.

Adult Sheldon: I didn't realize until years later that my father was only asking questions about lightning and thunder to cheer me up. In fact, he would often pretend to be dumb just to make me feel better.

Adult Sheldon: My father didn't always get the credit he deserved. The advice he gave me actually worked out pretty well. Of course, I never told him.
George Sr.: Talked to Billy.
Missy: Why would you do that?
George Sr.: No, it was good.
Missy: Stay out of my life.
Adult Sheldon: He may not have been the world's greatest dad. But maybe we weren't the world's greatest kids.

Adult Sheldon: Visiting Tam's house for the first time was an emotional roller coaster.
For example, it's traditional in Vietnamese homes to have gruesome religious iconography near the entrance. I did not like that.
However, it's also customary to not wear shoes around the house for sanitary reasons. I did like that.
Interestingly, one of the main ingredients in Vietnamese cooking is an extremely pungent condiment known as fish sauce. I did not like that.
But before every meal, it's common for everyone to wash their hands and face. I did like that.
Forks are not customary in a Vietnamese household. I did not like that.
And instead of napkins, there was one towel for everyone to share at the table. Seriously, what are they thinking?

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.

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.

Sheldon: Fun fact... did you know the knife goes on the right because it was the first utensil, and most people are right-handed?
Missy: Did you know I set the table and no one said thank you?
Sheldon: No one thanked me for my fun fact. You don't hear me complaining.