Adult Sheldon: None of my friends had recorded the episode. I called Tam. I called Dr. Sturgis. Those were all my friends.

Adult Sheldon: I've often been accused of being stubborn and willful, but sometimes it works like gangbusters.

Adult Sheldon: I've always loved trains. In fact, if my career in theoretical physics hadn't worked out, my backup plan was to become a professional ticket taker. Or hobo.

Adult Sheldon: But I wasn't a good sport. At that moment, I vowed to come back the following Sunday and destroy Pastor Jeff.

Adult Sheldon: The average American consumes 55 pounds of beef per year. And then there's Texas, where we can knock that off in a couple of months. Maybe faster, if we're talking about smoked brisket. Curiously, the one cut of beef that Texans and Jews agree upon.

Adult Sheldon: My mother didn't believe in elves, fairies, or dragons. But she did believe in the devil. And she did not view him as an appropriate playmate for her son.

Adult Sheldon: And, like Mother Nature's piñata, geodes contained a secret surprise inside. But you didn't have to suffer through a birthday party to enjoy it.

Adult Sheldon: In physics, nothing feels better than predicting an outcome. I love predictability. The force of gravity: predictable. Nuclear fusion: predictable. My brother peeing in the shower: repulsive, but predictable. What isn't predictable: dogs. I've always been terrified of dogs. To me, they're nothing but big, furry question marks. Question marks with teeth.

Adult Sheldon: In tenth grade, high school students are presented with picking a class of their own choosing. This is called an elective. Courses on offer included wood shop, I'm happy with ten fingers, thank you; introduction to agriculture, I think you know the answer to that; wrestling, I'd rather milk that cow. All of which led me to the elective I reluctantly chose, Psychology 101, an investigation into why people think and feel the way they do.

Sheldon: State troopers. I wonder what they want.
Adult Sheldon: It turns out they wanted me. Fun fact, this was one of seven times I was brought home by law enforcement. Once, on the back of a horse.

Adult Sheldon: Having found no answers, I took it upon myself to rectify the inconsistent timeline in Lord of the Rings. J.R.R. Tolkien had a brilliant mind, but let's be honest. He was no S.L. Cooper.

Adult Sheldon: Thanks to Dr. Sturgis, I had all the intellectual ammunition I needed to bring my opponent to his knees. I accused him of conflating two different interpretations of quantum theory, woefully misrepresenting Paul Dirac, and when I called him a dung beetle in Latin, I was so riled up, I almost started producing testosterone.

Lisa: [modem screeching] What's that noise?
Georgie: No idea.
Sheldon: Georgie, I need you to get off the phone.
Georgie: Hang on, Lisa. I'm helping someone with their English homework.
Sheldon: I don't have time for jokes. I need the phone line to connect my modem.
Georgie: What the hell's a modem?
Sheldon: It links my computer to an interconnected web of other computers in order to facilitate the exchange of ideas.
Georgie: That's the stupidest thing I've ever heard of.
Adult Sheldon: Sadly, that was not the stupidest thing he ever said.

Sheldon: [answering phone] Cooper residence.
Dr. John Sturgis: Hello, Sheldon.
Sheldon: Dr. Sturgis. I'd love to talk to you, but I'm right in the middle of Star Trek: The Next Generation. It's a good one. Geordi goes missing, but Wesley Crusher has a plan to use neutrinos to locate him, since they'd be visible to Geordi's visor.
Dr. John Sturgis: I was actually calling to speak to your father. But I'm glad you're having fun with your friends.
Sheldon: Hang on. I'll go get him. Dad! Phone call!
Adult Sheldon: Even though Dr. Sturgis was confused, one day, Wesley Crusher really would be my friend. Neat, huh?

Adult Sheldon: In many ways, a high school is like an academic house of horrors. There's the cafeteria, which when even freshly cleaned, maintains a subtle aroma of tater tots and throw-up. The schoolyard, where one is exposed to bullying by delinquents and attacks from above by eye-pecking demons. [bird tweets] But all of these pale in comparison to the most horrific location of all. A place teeming with the sweat and secretions from hundreds of unwashed bodies. The swimming pool.