Leonard: Hey, what you making?
Penny: Uh, well, I spilled the cheese packet, so we're having mac and nothing.
Leonard: Oh, yeah, I'll just have the mac. "Nothing" gives me gas.

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

Raj: [to Amy] If you were having Sheldon's baby, would you really want him in the room?
Penny: Yeah, if he's in the room when they're making the baby, I'll give you $10.

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

Penny: Look, I know this is your wedding, and you can do whatever you want, but if you think anyone but me is gonna be your maid of honor, then you're an idiot because you are my best friend.
Howard: Too late, Bernade-
Amy: (pushes Howard out of the way, rushes to hug Penny) Bestie!

Sheldon: Did Bernadette even try to send us a sewing kit?
Amy: She did. Amazon, standard shipping, not even Prime.
Sheldon: (gasps) We could've done that ourselves.
Amy: (chuckles) That's what she said.

Amy: Okay, what's the next test?
Sheldon: Loyalty. We need to choose someone who has our backs, someone who will keep our secrets even from each other.
Amy: Well, I don't have any secrets from you. Do you have secrets from me?
Sheldon: Yes. Oh, that has been weighing on me for years.