Adult Sheldon: I've always enjoyed math word problems. Try wrapping your noggin around this one. A brilliant young boy named Sheldon is about to start college. He needs to get from his linear algebra class to his physics class, which is 822 meters away. If his stride is 23 inches long and he only has 10 minutes, how many steps would he have to take per minute to make it on time? It's a doozy, isn't it? Don't worry. I'll show my work. First, we must determine the maximum velocity achievable without breaking a sweat. Sweating is for jocks and those who are worried the jig is up.

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: 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?

Adult Sheldon: I've fought many digital battles in my life, but none are as memorable as this first one with my Meemaw. By handing me the controller, she was telling me she believed in me. That inside my small, fragile frame beat the heart of a hero.

Meemaw: Look, you haven't even gotten to the worst part of it yet. They're gonna leave home. They're gonna move to another city.
Mary: Oh, Lord.
Meemaw: They're gonna tell you their loser boyfriend has knocked them up. Just to be clear, that would be you.
Mary: Sorry.
Meemaw: Turned my hair gray overnight.
Mary: I said sorry. Clearly, you're not in the mood to help.
Meemaw: Listen, it's hard being a parent, but if you do it right, they don't need you anymore.
Mary: Well, I don't like that. I get it, but I just don't like it.
Meemaw: Well, I'd point out, you'll always have your husband, but you want me to be "helpful".

Sheldon: This is bad.
George: You're gonna be just fine.
Sheldon: This is the arm I write with. This is the arm I eat with. This is the arm I do the Vulcan salute with. Ow.
George: It's not too swollen. That's a good sign.
Sheldon: You're not a doctor.
George: But I see this on the football field all the time.
Sheldon: Football players are meant to be hurt. I'm meant to be cherished.

Sheldon: Well, that's what I heard. And if Hawking doesn't let it stop him, then I can't let this cast stop me.
Missy: Great. Go back to sleep.
Sheldon: I will, and I'll do it all by myself. [sings] Soft kitty, warm kitty
Missy: Oh, my God.
Sheldon: Little ball of fur Happy kitty, sleepy kitty, purr Purr, purr.