Penny: (entering) Howard, your scooter's blocking my car. Aw, did you get pinkeye again?
Howard: Step one, she notices the eye patch. May I say, Penny, not a lot of women could look as hot as you do with such greasy hair? (She pulls his eye patch away from his face, then lets it snap back to his face)
Penny: Yeah, just move your stupid scooter before I pick it up and throw it in the dumpster.
Howard: Ow.

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Leonard: If I take it off, Sheldon wins.
Penny: Sweetie, every night you don't kill him in his sleep, he wins.

Leonard: What am I supposed to do?
Penny: Err, keep your mouth off other women.

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.

Mrs. Wolowitz Tell her we're going to the Olive Garden. I have a coupon from the paper.
Howard: We're not going to the Olive Garden, ma!
Mrs. Wolowitz Oh, Mr. Big Shot with his Red Lobster.

Stephanie: So, how was your day?
Leonard: You know, I'm a physicist, I thought about stuff.
Stephanie: That's it?
Leonard: I wrote some of it down.