Raj: What's with him?
Leonard: Penny is keeping him up at night.
Howard: Me too. But probably in a different way.

Sheldon: Level 3 and she thinks she's rich. What a noob!

Leslie: Hello men. Sheldon.

Dr. Gablehauser: What colorful nickname did you call Dr. Cooper this time?
Leslie: Dr. Dumbass.

Sheldon: I'm surprised you struck out with Penny. Apparently she's a big ol' five.

Sheldon: Fellow warriors, this is Sheldor the Conqueror. We are about to enter Atzel's fortress. Now, this is a long run, so let's do another bladder check. All right, Barry, we'll wait for you again, but you really should see a doctor.

Tom: I'm sorry, dude, she didn't look anything like her picture.
Leonard: They never do.

Leonard: Wanna catch me up?
Sheldon: Well, let's see. She attempted to open her apartment with her car key because her face is overly Midwestern. She hasn't had sex in 6 months, and she ate a fly.
Leonard: Uh-huh. Seriously, 6 months?

Sheldon: Sheldor, back online.
Penny: What's AFK?
Sheldon: AFK. Away from keyboard.
Penny: Oh, I see.
Sheldon: What does that stand for?
Penny: "Oh, I see"?
Sheldon: Yes, but what does it stand for?

Leonard: Chosen by science?
Sheldon: Well, what passes for science on dating sites. They claim to use heuristic algorithms, but it may well be hokum.
Leonard: You got Penny to sign up for online dating?
Sheldon: No, of course not. No, I used trickery and deceit.

Penny: Can we go talk in the living room?
Sheldon: I'm not wearing pajama bottoms.
Penny: Why not?
Sheldon: I spilled grape juice.
Penny: Well, wear different pajamas.
Sheldon: I can't wear different pajamas. These are my Monday pajamas.

Sheldon: Just when I think I've gotten the hang of sarcasm.

Dr.Gablehauser: Need to get that, Dr. Cooper?
Sheldon: God, no.
Leslie: Don't turn it off, you might miss the Nobel Prize Committee saying that you won "Dumbass Scientist of the Year."

Sheldon: Danger! Danger!

Sheldon: The Hungarians are just using you for dragon fodder.
Penny: Really? Boy, you'd think you could trust a horde of Hungarian barbarians.