Penny: You can stay in Leonard's room, and we'll stay at my place.
Amy: You're sure that's not an inconvenience?
Penny: No, not at all.
Leonard: And we live with Sheldon, so the word "inconvenience" has really lost all meaning.

Penny: Do boys have flowers?
Leonard: Who knows what he has down there.

Amy: Comfy?
Sheldon: Oh, I'm just happy I don't know what this memory foam remembers.

Raj: Hey, this pregnancy had an emotionally-needy third wheel way before you came along.

Amy: I'm in this relationship, too. I need to stand up for myself.
Leonard: Of course you do.
Amy: And if he doesn't like it, he can move back here.
Leonard: Oh, he can try. He'd just need a good locksmith.

Leonard: Buddy, buddy, listen, nothing bad is going on, she just she just didn't want you to know that the work on her apartment was finished a couple weeks ago.
Sheldon: I don't understand.
Leonard: She's enjoying living with you and she didn't want it to end early.
Sheldon: So, she's deceiving me in order to spend more time with me?
Leonard: Yes.
Sheldon: Oh. Well, I feel both flattered and hurt. Like when people say I look like that skeleton from Nightmare Before Christmas.
Raj: Oh my God, that's who you look like.

Amy: There are a lot of memories wrapped up in that room. For me, too. The first time you told me you loved me was in that room.
Sheldon: Wrong. We were standing outside my room in the hallway.
Amy: And there is the love of which I speak.

Sheldon: How much will it hurt?
Amy: It's just a tiny skin sample. You saw me do it to myself.
Sheldon: On a scale of one to ten, where one is a pebble in your shoe and ten is the monkey you thought was your pet biting your face off.
Amy: A two.
Sheldon: Eating a whole Altoid?

Amy: Wait, are you saying if we combine my experiment with your calculations, we can determine the precise moment in time when the wave function collapses?
Sheldon: It could be the most inspired combination since I mixed red Icee into my blue Icee. It was like drinking 2/7ths of the rainbow.
Amy: Sheldon, this is really interesting.
Sheldon: Yeah and this one won't stain my teeth purple.

Amy: I made your favorite oatmeal - plain.

Raj: I'm the son of a gynecologist. I could be helpful.
Bernadette: It would help if you stopped telling me I have a textbook cervix.
Raj: The polite response is, "Thank you for noticing."

Sheldon: So, in the spirit of cohabitation, the theme of today's episode is flags of two regions coming together as one.
Amy: Such as the flag of St. Kitts and Nevis.
Sheldon: So, let's roll up our "sleevis" and get to know Nevis.
*Howard plays a rimshot sound*
Sheldon: Well, I-I like that, but next time check with me.

Raj: Oh, Double Stuf Oreos, I remember when I could afford you.

Raj: If we're all gonna die, why am I eating so much kale?

Penny: It's not that I want to go, I just think it'll make Leonard happy. And if I have to watch him squeeze into an Ewok costume, so be it.
Amy: Look at you, going to Comic-Con, talking about Ewoks. I really have become the cool one around here.