Sheldon: Per the student dress and grooming code, this boy's hair is too long. This boy's wearing sports attire outside a designated area. And this girl's blouse is diaphanous, which means I can see her brassiere.

Sheldon: Hello. Yes, you can help me, Dorothy Fitzpatrick. I'm interested in taking out a second mortgage. I'm nine years old. Why do you ask? That's called age discrimination, Dorothy, but I'm willing to let it slide. I'm glad you find me cute, but I'm deadly serious. I need funds to buy a computer. No, the house isn't in my name. I'm nine. We've established this. I do prepare the taxes for my parents, and if we tighten our belts, we'll have sufficient equity for the loan.

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.

Mary: How about we lose the bow-tie?
Sheldon: Why?
Mary: Look around, honey. No of the other kids are wearing one.
Sheldon: Well, perhaps I'll start a fad.

Brenda Sparks: Well, I'm sorry, but you shouldn't be inferring there's something wrong with my Billy.
Meemaw: Darlin', there's no inferring. I've seen the boy sitting in the dirt eating his own belly button lint.

Sheldon: Thank you, but I will no longer be needing these.
Ms. Fenley: You're giving up so soon? What happened? Did it hurt your fingers?
Sheldon: No. I'm following the advice of a very wise Rabbi Schneiderman from Temple Judea in Houston.
Ms. Fenley: Is this another one of your jokes?
Sheldon: No. If it were a joke, your mouth would be open and the sound "ha-ha" would be coming out.

George Sr.: Hey, Tom, you got a minute?
Principal Petersen: Pretty busy. Make it quick.
George Sr.: It turns out I don't need that raise.
Principal Petersen: What happened, you win the lottery?
George Sr.: No, no.
Principal Petersen: Aw, George, I am so sorry.
George Sr.: Well, what can you do?
Principal Petersen: Listen, I cleared your raise already, why don't you just keep the money.
George Sr.: Oh, no, I couldn't do that.
Principal Petersen: No. No, I mean it. It's yours.

Adult Sheldon: Once again, I brought my mother so much joy she was moved to tears. I don't know how I do it.

Sheldon: [knocking] Dad? [knocking] SHELDON: Mom?
Mary: Yeah, Shelly?
Sheldon: I just thought you should know I'm not going to be Jewish. I'm going to remain the atheist Baptist you've come to love.
Mary: Good to hear.
Sheldon: Are you crying?
Mary: [sighs] Yeah, but don't worry, everything's okay.
Sheldon: Good.

George Sr.: What's going on? You all right?
Mary: I'm not feeling great.
George Sr.: Is it a pregnant thing? 'Cause I got some good news on that. I got a decent raise.
Mary: It doesn't matter.
George Sr.: What do you mean it doesn't matter? We can pull this off now.
Mary: I lost the baby.
George Sr.: Oh.
Mary: You're probably relieved, huh?
George Sr.: Actually no. I love the first three. Fourth one's a charm, right?