Sheldon: I don't understand why you're not enjoying this. Together, in this car, with my enhanced capabilities, we're like 'Knight Rider.'
Leonard: Except, in Knight Rider, the car isn't a yammering sphincter.
Sheldon: You mock the sphincter, but, the sphincter is a class of muscle without which human beings couldn't survive. There are over 50 different sphincters in the human body. How many can you name?
Leonard: I was wrong. This is exactly like Knight Rider.

Penny: Honey, have you ever run before?
Sheldon: Certainly. I've run from bullies, dogs, angry chickens and one particularly persistent PE teacher determined to bend me over and give me a scoliosis test.

Howard: I say we just take him to Tatooine and sell him to some Jawas.
Raj: That's two, dude. Write your own jokes.

Leonard: Cause of death for Uncle Carl was KBB? What's KBB?
Sheldon: Killed by badger.
Leonard: How's that?
Sheldon: It was Thanksgiving. Uncle Carl said, "I think there's a badger living in our chimney. Hand me that flashlight." Those were the last words he ever spoke to us.

Penny: I'm a little low on cash.
Leonard: How much you got?
Penny: Nothing.
Leonard: How can you walk around with no money?
Penny: I'm cute, I get by.

Penny: You wanna turn yourself into some sort of robot?
Sheldon: Essentially, yes.
Penny: Okay, here's my question: Didn't you already do that?

Howard: (Repeating what Raj says) You're right, Penny jogs. Maybe you guys can run together.
Sheldon: That's an excellent idea. Yeah, if we chat, it will create the illusion of time going faster.
Penny: No, it won't.

Sheldon: I believe I may have cholera.
Leonard: There's no cholera in Pasadena. Just like last summer when there was no malaria in Pasadena.

Penny: The Flash shirt is what? Because you're gonna run really fast?
Sheldon: No, the Flash shirt is because it's Friday. But it's nice when things work out.

Howard: (To Raj) Really? That's your question? When did he put a ramp in?

Sheldon: (Trying to keep Leonard from reaching his room) Wait. Come back. Halt. Authorized personnel only.

Penny: (To Howard and Raj) So either one of you weirdos wanna buy my underwear? Only 1400 bucks.

Sheldon: Pay no attention to that man in the bed.

Leonard: Refresh my memory. Why didn't I just put you in the trunk?
Sheldon: Because I called shotgun, remember?

Sheldon: You're my 15th favorite technological visionary.
Steve Wozniak: Only 15th?
Sheldon: It's still six spots above Steve Jobs.