Adult Sheldon: Dr. Linkletter wouldn't give me what I wanted. I couldn't tell on him to his mommy, but I could to his "work mommy."
President Hagemeyer: Sheldon. What can I do for you?
Sheldon: I can't make it to school today, and I'm concerned about the physics class I'm missing.
President Hagemeyer: And how come you're not here?
Sheldon: I was in a car accident with my meemaw.
President Hagemeyer: Oh, my God. Are you okay?
Sheldon: Well...
[flashback:]
Sheldon: I can't believe you'd use my traumatic experience to manipulate people.
Missy: [echoing] Really? I can.
[present:]
Sheldon: ...and then her car had to get towed away. It was quite a traumatic experience.
President Hagemeyer: Oh, you poor thing. What can I do to help?

Sheldon: I started working on this presentation to address specific ethical dilemmas. The laws of robotics, whether torture can be justified, and cloning people for fun and spare parts. But I realized before resolving any of these moral quandaries, the real decision is who gets to decide. Do we put it up for a vote? Does everyone get to decide for themselves? Should it be by committee? Is that committee elected or appointed? You see where I'm going? You probably don't. For the smartest decision, we need the smartest person. Ladies and gentlemen, in the field of scientific ethics, we can't rely on democracy or plutocracy. We need an autocracy, or to be more precise, a "Sheldocracy." [slams fist] [military march plays]
Dr. John Sturgis: Um, I don't think this was the assignment.
Sheldon: Sorry, Dr. Sturgis, I pick the assignments now. Everybody, for next class, I want 500 words on what you can do to further the Sheldocracy. Punishment for typos will be severe.
Dr. John Sturgis: Class dismissed.
Sheldon: Hey, that's my line.
Dr. John Sturgis: No, it isn't.
Sheldon: Why don't you see me after class. Class dismissed.

Principal Petersen: Our next young speaker needs no introduction, but that didn't stop him from writing one and making me read it. [laughter] "Fun fact." [audience groans, murmurs] I hear you. "The word 'valedictorian' is from the Latin 'valedicere,' meaning 'to say farewell.' It is primarily used in the United States, Canada, the Philippines and Armenia." Maybe that fact's more fun in Armenia. Please welcome your valedictorian, Sheldon Cooper.
Mary: Yay, Shelly!
Sheldon: Hello. I'm not very comfortable speaking in front of crowds. But there's a technique to reduce stage fright by focusing on one person in the audience and delivering your speech just to them. That's what I'll be doing today. If it weren't for this person, I wouldn't be here right now. They've taught me a lot, and it's by their example that I found the courage to move forward into this new and exciting chapter of my life. Missy... ...this is for you. Change can be scary, but I know we're going to be fine... ...because like you said, "It's okay to be scared. We just have to do it anyway." So if any of my fellow graduates are nervous about the future, know that you're not alone. I suggest you all try to be as brave as my twin sister. That's my plan. Missy, I wish I could give you advice about middle school, but I was so smart, I skipped it. If you make it to high school, we'll talk. Thank you. [applause]

Mary: You understand that some people are going to be intimidated by you, because of how smart you are?
Sheldon: Or maybe they'll recognize my intellect and make me their leader.

Adult Sheldon: My mother eventually coaxed me back into a car with a trip to RadioShack. She knew I was nervous so she came up with an interesting distraction.
Mary: Baby, how about we play a car game?
Sheldon: I suppose. Can I make it science-based?
Mary: Sure.
Sheldon: I'll say an element starting with "A," then you repeat that and add one starting with "B."
Mary: I don't think I'll get very far.
Sheldon: Great. Then I'll win. Aluminum.
Mary: Okay, uh, you said "A" for aluminum. "B." Is boron an element?
Sheldon: Yes.
Adult Sheldon: It was the beginning of a new tradition. One that would eventually bring countless hours of joy to Leonard on our drives to work. Much like my mother, he never beat me.
Mary: I don't know an element that starts with "D."
Sheldon: I win. That was fun. Round two. Argon.

Dr. John Sturgis: [on the phone] So, there's no one who can lend you a car?
Meemaw: There is the church shuttle, but that just feels like it's the end of the line.
Dr. John Sturgis: Oh, I wouldn't say that. There's all sorts of depressing steps before the end. You've got full-time nursing care.
Meemaw: Bye, John.
Dr. John Sturgis: Assisted living.
Meemaw: Bye, John.
Dr. John Sturgis: Hospice.
Meemaw: Bye, John.
Dr. John Sturgis: Life support.
Meemaw: Bye, John!
Dr. John Sturgis: Pulling the plug. [chuckles]
Meemaw: Bye, John.
Dr. John Sturgis: Then... you make a miraculous recovery!
Meemaw: Great!
Dr. John Sturgis: But... the hospital bills leave you destitute!
Meemaw: Bye.
Dr. John Sturgis: Bye.

Dr. John Sturgis: [on the phone] Oh, my goodness. Was anyone hurt?
Meemaw: No. But now I got no car for a while.
Dr. John Sturgis: You could ride your bike.
Meemaw: An old lady on a bike? That's not cool.
Dr. John Sturgis: Really? Then I won't ask how I look on one.
Meemaw: You look great.
Dr. John Sturgis: I know. I just wanted to hear you say it. [Meemaw chuckles]