Adult Sheldon: It should come as no surprise that the very first grade I ever received was a "super-duper." Granted it was for counting spots on a ladybug, but still, I nailed it. Even as the difficulty of assignments grew, I maintained the same level of excellence. In every class, in every subject, I was perfect. Which is why this day hit me like a ton of bricks.

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?

Adult Sheldon: Dr. Sturgis was a wise man. It was a learning opportunity. And when the day comes that I'm wrong, I fully plan to admit it.

Ms. Hutchins: Sheldon, why aren't you in second period?
Sheldon: I'm working on this math problem.
Ms. Hutchins: I think you might be the first person in history who's ever cut class to do math.
Sheldon: The irony wasn't lost on me.

Sheldon: Thank you for asking. I appreciate it. And how are you doing?
Ms. Hutchins: Since when are you interested?
Sheldon: My father told me I should be kind to old people.
Ms. Hutchins: How old do you think I am?
Sheldon: My father also told me if a woman ever asks you that, it's a trap.
Ms. Hutchins: Smart man.
Sheldon: But I'll say 53.