Billy Sparks: I would like your permission to ask out Missy.
George: Really?
Billy Sparks: Yeah.
George: Okay. Uh... [TV turns off] Well, I appreciate you coming to me.
Billy Sparks: I wanted to do this the right way.
George: Uh-huh. You know, Billy, this sounds like a big step. I'm not sure Missy's really ready for dating yet.
Billy Sparks: She went out with Marcus from school. They went to the movies.
George: Yeah, that is... meaningful.
Billy Sparks: But they broke up, so now's my chance.

Billy Sparks: Who's Melissa?
Missy: Me.
Billy Sparks: Then who's Missy?
Missy: "Missy" is short for "Melissa." Like how "Billy" is short for "William."
Billy Sparks: I don't understand.
Missy: You know how your real name is William?
Billy Sparks: I'm Billy.
Sheldon: No, we call you Billy, but your real name is William.
Billy Sparks: But my underpants say "Billy" in them. Mom, is my name William?
Brenda Sparks: [sighs] Yeah.
Billy Sparks: Then whose underpants am I wearing?

Billy Sparks: Hello.
Herschel Sparks: Hey.
George: Hey, Billy.
Billy Sparks: Was this fence window always here?
Herschel Sparks: No, son, that's a new fence window.
Billy Sparks: Anybody else getting dizzy?

Sheldon: How do we love our neighbors when our moms hate each other?
Billy Sparks: Who does your mom hate?
Sheldon: Your mom.
Billy Sparks: Hey, my mom hates your mom. Small world.

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: Talked to Billy.
Missy: Why would you do that?
George: 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.

Sheldon: Dr. Linkletter and I are stuck on a science problem. I know Dr. Sturgis could help, but I'm hesitant to suggest that because I know they have a professional rivalry.
George: Well, the way I see it, y'all are on Team Science, right?
Sheldon: I suppose.
George: And people on the same team don't have to get along to work together.
Sheldon: Like you and Mom.
George: No. A quarterback and his receivers. He doesn't throw it to the guy he likes best. He throws it to the one that's open.
Billy Sparks: So smart.
Sheldon: So, I should ask Dr. Sturgis what he thinks about the dark matter being a Bose condensate?
George: Do you want Team Science to win?
Sheldon: Thank you. This has been helpful. [exits]
Billy Sparks: What's a Bose condensate?
George: I'll tell you at halftime.

Adult Sheldon: You probably think of quantum physics as a white-knuckle rush of adrenaline, like the Peter Pan ride at Disneyland. But the reality can be a little less exciting, especially when you're stuck. [clock ticking] [lights humming] [water bubbles]
Dr. Linkletter: We'll get this.
Sheldon: Perhaps a set of fresh eyes could be helpful.
Dr. Linkletter: If you're going to suggest Dr. Sturgis, I should remind you we have a complicated history.
[flashback:]
Dr. John Sturgis: And your graviton research is mediocre at best!
Dr. Linkletter: You're not qualified to judge my work.
Dr. John Sturgis: All right, that's it. [they shove each other]
[present:]
Sheldon: We'll get this.