Penny: Yes. I feel like I'm letting everybody down. I hate disappointing Leonard, but I really hate disappointing you.
Wyatt: Oh, Slugger, you could never disappoint me. Okay, your high school years were a little rough.
Penny: Yeah. And I'm sorry about that.
Wyatt: There was you sneaking out at night and your boyfriends sneaking out in the morning.
Penny: I said sorry.
Wyatt: That time you got drunk and stole a horse.
Penny: Yeah. I was there. I remember. Parts of it.

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

Penny: At one point, they had me figure out how to get a banana out of a puzzle box.
Leonard: Wait, Sheldon gave me a banana in a box. He was testing me, too.
Penny: Unbelievable.
Leonard: And how could a chimp even solve that? That was impossible.
Penny: Really? You couldn't get it out?

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

Marissa: It's a little weird for us, too. I mean, instead of our baby looking like Zack, it's gonna look like Leonard.
Zack: Or Penny if it's a girl.
Penny: No, no, it's not gonna look- Sure.

Marissa: And, well, we're really hoping for a son. So just, like, keep that in mind when you're in there.
Zack: Yeah, just think, "Little boys, little boys."
Penny: Still just totally not weird.

Raj: Uh, if you still want to go, you can go to India and help my dad eat all the nonrefundable sushi.
Howard: Indian sushi? I need a change of underwear just thinking about that.