Adult Sheldon: Now that I had prevented my dad from saying I made a mistake, it was time to get the IRS to admit theirs.
Malcolm Green: [answers phone] IRS, Agent Green speaking.
Sheldon: Hello, my name is Sheldon Cooper. Forgive me for cutting right to the chase, but I'm outside and my skin is incredibly fair.
Malcolm Green: Okay, how can I help you?
Sheldon: You sent my family a bill saying we owe an additional four dollars and 22 cents, but you're mistaken. I filed a flawless return.
Malcolm Green: I'm sorry, how old are you?
Sheldon: That seems irrelevant, but I'm 11.
Malcolm Green: Your parents let an 11-year-old file their federal tax return?
Sheldon: This year. Two years ago, they let a nine-year-old do it.
Malcolm Green: Look, these tax codes are complicated. If you only made a four dollar mistake, that's pretty impressive.
Sheldon: I didn't make a mistake at all. You did.
Malcolm Green: Is that so?
Sheldon: Yes. But don't feel bad, these tax codes are complicated.
Malcolm Green: Uh-huh. Okay, I've got your file right here, and, uh, looks like you under-reported your income.
Sheldon: Actually, if you check under charitable donations, you'll notice that the money we made at the garage sale did not count as taxable income because we donated it to the church.
Malcolm Green: Well, I'll, uh, I'll have a look into that.
Sheldon: In the future, you might consider doing that before you send out the letter. So how does this work? Do you apologize now, do I get it in writing?

Mary: Too bad. We are going.
Sheldon: Class is starting tomorrow. I'm not going anywhere.
Mary: Sheldon, do not argue with me. You are going home.
Sheldon: Mom, the people of Germany are obsessed with rules and devoid of humor. I am home.

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.

Meemaw: I'll have the rib eye, medium rare.
Waiter: And for you?
Dale: Uh, just the house salad, please.
Waiter: Very good.
Meemaw: House salad? You watching your figure?
Dale: I have a physical tomorrow.
Meemaw: Oh, so your plan is to start eating healthy now?
Dale: Can't hurt.
Meemaw: It ain't gonna undo years of red meat and beer.
Dale: I'm not trying to undo it, I'm just trying to hide it under some lettuce.

George: Should we get started?
Malcolm Green: Yes.
Adult Sheldon: I realize some people may find the ins and outs of tax law a little tedious, so allow me to spice this story up. Instead of an audit, imagine this is a showdown between two warriors in the most brutal and exciting form of combat there is... chess. Am I the only one who just got chills?
[fantasy:]
Malcolm Green: Let's start with the business deductions from Schedule A on the tax return dated 1989.
Adult Sheldon: I know, bold opening move. Don't worry, I came to play.
Sheldon: Happy to. I've got those receipts right here. Dated, highlighted... and itemized.
Adult Sheldon: Told you. For the next three hours, we battled it out. Two mighty brains locked in mortal tax code combat.
Malcolm Green: Justify this expense.
Sheldon: Our AGI was less than $50,000.
Malcolm Green: Improper classification.
Sheldon: Rolled over from the previous fiscal year.
Malcolm Green: The receipt has barbecue sauce on it.
Sheldon: Dad.
George: Sorry.

Dale: Well, you're not a fan of doctors, huh?
Meemaw: They never have good news. They just want to find something wrong.
Dale: It's kind of their job.
Meemaw: If something's wrong with me, I don't want to know about it.
Dale: That's dumb.
Meemaw: No, it's not. If I'm gonna drop dead, I'd rather do it quick and leave lookin' good.