Sheldon: Who was at the door?
Leonard: Oh, uh, building manager. They have to fix a pipe so the water will be off tomorrow from noon to two.
Sheldon: That's unacceptable. We're supposed to be given written notice.
Leonard: No, no, it doesn't matter, we'll be at work.
Sheldon: Well, what if I spill tomato soup on my shirt and have to come home to change, only to find there's no water for an enzyme soak.
Leonard: Bifurcated uvula, Sheldon!
Sheldon: I'll have the chicken noodle. Goodnight.

Raj: I don't like bugs, okay. They freak me out.
Sheldon: Interesting. You're afraid of insects and women. Ladybugs must render you catatonic.

Sheldon: Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.

Sheldon: Why are you crying?
Penny: Because I'm stupid.
Sheldon: That's no reason to cry. One cries because one is sad. For example, I cry because others are stupid, and that makes me sad.

Leonard: I'm sorry.
Raj's sister: Why do you say that?
Leonard: When I'm in bed with a girl, that's just my natural response.

Raj: Hands off my sister.
Sheldon: Why would I touch your sister? She's all covered in airplane germs.

Sheldon: And to think, I was about to waste the last of my good haemorrhoid cream on you.