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.

Adult Sheldon: Not since sharing a uterus with my twin sister have I been so unhappy sitting next to someone.

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.

Adult Sheldon: Observation is an important part of the scientific method. Darwin observed the finches, Jane Goodall observed the chimpanzees, and for some reason, Dr. Sturgis wanted to observe my meemaw's new suitor.

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?

Missy: Mom, we're going to Chuck E. Cheese!
Mary: We're not going anywhere. It's almost your bedtime. Sorry, hon.
Missy: Well, all that matters is that I'm the winner.
Sheldon: Yes, you are.
Adult Sheldon: Actually, I was the winner. We spent the whole day doing everything I love: drafting contracts, arguing about rules, and most importantly, never leaving the house.

Sheldon: Dad, the university offered to pay for us to go to California! They're even putting us up in a hotel.
George Sr.: You're kidding.
Missy: We're going to California?
Sheldon: No, just me and Dad.
Missy: That's fair. I'm so happy for you.
Adult Sheldon: Sometimes sarcasm was laid on so thick even I could detect it.
Sheldon: Thanks!
Adult Sheldon: This was not one of those times.

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 perilous journey from the bus stop to my front door was 97.5 meters. FYI, insisting on using the metric system in East Texas is another reason I was hunted by predators.

Paige: You know, I read that adults who had a stunted childhood often become social misfits and weirdos.
Sheldon: You didn't read that, you're making it up like your goat story.
Paige: Psychology Magazine, February issue, 1988.
Sheldon: Well, um, that doesn't make it true.
Paige: Guess you'll find out when you're an adult.
Sheldon: I guess I will.
Adult Sheldon: Well, we know how this story ends. I grew up to become a well-adjusted and charming fellow. But at that moment in time, she had me worried.

Adult Sheldon: And that's how I became the madcap prankster all my friends know and love.

Adult Sheldon: When people wonder why Radio Shack eventually went out of business, you can point to this moment.

Adult Sheldon: My father's wisdom touched me deeply. Which is why, to this day, no matter what I'm going through, I am never irritating or abusive to any of my friends or loved ones. Ask them. They'll tell you.

Adult Sheldon: Many inventions changed people's lives for the better: the light bulb, the polio vaccine, and one that doesn't get enough credit, the home video cassette recorder. It didn't help keep people out of wheelchairs, but it did keep me from missing Star Trek.

Adult Sheldon: Whoever said the quickest way to a man's heart is through his stomach did not consider his tiny bladder.

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: Enjoy this. It is, by far, the most athletic two minutes of my entire life.

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: What was happening was, like many men before me, I was being seduced by the exotic world of geology.

Adult Sheldon: We searched for tektites in a nearby ravine. Tektites are natural glass formed during meteorite impacts. They also bear a close resemblance to raccoon feces, so I wisely adopted a "no touching tektites" policy.