Penny: Well, I wouldn't exactly call it a hook-up.
Emily: Did you kiss?
Penny: Yeah.
Emily: Were you naked?
Penny: Yeah.
Emily: So, it was a hook-up.

Is this when he says bazooka or something?

I know, watching your boyfriend run around with a broomstick between his legs isn't something you forget.

Okay, that's not what I meant when I said go outside and play

Amy: I'm stimulating the pleasures of this starfish. I just need to turn it off.
Penny: What happens if you don't?
Amy: Then I have to sit through lunch knowing this starfish is having a better day than I am.

Bernadette: Why don't I get you a job at the Sitting Around All Day Wearing Yoga Pants Factory?
Penny: They're comfortable.

Penny: Hi. Want to do yoga with me?
Leonard: Um, let me just have some coffee first, and then I'll have the strength to tell you how much I won't be doing that.

Penny: He'll be okay. You taught him well, Padawan.
Sheldon: Good Lord! Padawan's the student,
not the teacher.
Penny: Seriously, let him go.

Leonard: I know his password, so I can track his phone.
Penny: You do that?
Leonard: Not always, but ever since he wandered off at the swap meet chasing a balloon, I get worried.
Penny: He can take care of himself. Look, we went over stranger danger and gave him that whistle.

Leonard: Penny and I have some big news.
Penny: We're engaged!
Raj: And I thought me having sex with Emily was gonna be the big news.

Penny: Where did you get a ring?
Leonard: I've... had it for a couple years, not important. Penny... will you marry me?
Penny: Oh, my God, yes.
Leonard: This would have been so much more romantic if you didn't have monkey hair on your finger.

Leonard: So, is that it? Are we engaged?
Penny: Yeah, I think so.
Leonard: All right.

TBBT Quotes

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.

It's very simple. 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