Howard Wolowitz: So, he was your best friend growing up?
Tam Nguyen: Yes.
Howard Wolowitz: Were there no other kids in Texas?
Sheldon Cooper: Whoa. That girl just took a book on geostatistics.
Tam: Yeah, so?
Sheldon Cooper: That's not required reading for any science course.
Tam: Maybe she wants to squash a spider with it.
Sheldon Cooper: No, look, she's reading it. Who is this mystery woman?
Tam: Should we invite her to have lunch with us?
Sheldon Cooper: I don't know. So far, it's just been you and me, and we know that works. Do we really want to mess with success?
Tam: We could think of it as an experiment.
Sheldon Cooper: Oh, you do know how to push my buttons.
Tam: All right, go ask her.
Sheldon Cooper: Why me?
Tam: Your lack of testosterone makes you adorable to women.
Sheldon Cooper: I can't argue with that.
Sheldon Cooper: Was Ms. Ingram upset I wasn't in class?
Tam: Actually, she was happy. She even did a little dance.
Tam: Are you into rocketry?
Sheldon Cooper: I started with water propulsion, worked my way up to solid fuel, then went back to water after I set our garage on fire.
Sheldon Cooper: I also tried to get some uranium and build an atomic engine, but that stuff's hard to find.
Tam: Probably for the best.