Raj: Good for Sheldon, deciding to stay with Amy on her birthday.
Leonard: I know. It's still gonna be weird to see the movie without him.
Howard: We could wait a couple of days and see it together.
*All three laughing*

Howard: You know, I'm really glad you decided to learn Mandarin.
Sheldon: Why?
Howard: Once you're fluent, you'll have a billion more people to annoy instead of me.

Bernadette: Maybe we should get one of those machines to help her up the stairs.
Howard: You mean a forklift?

Sheldon: Sheldon Cooper does not cry.
Howard: That's true, you'd rust.

Amy: Okay, what is going on?
Penny: We just want you to be prepared for any surprises that could happen tomorrow.
Amy: What surprises?
Bernadette: We don't want to spoil anything, but you should know that Sheldon said he's ready to be physical.
Amy: You shut your damn mouth! You actually heard him say this?
Penny: Yes, he said he wants to do something to show you how much you mean to him.
Amy: I can't believe it. I don't know what to say.
Bernadette: Well, we're really happy for you and we know how much-
Amy: I do know what to say. Let's get me waxed!

Sheldon: Oh, I should probably tell you something about this gift.
Amy: You mean, before you give it to me?
Sheldon: Yes. But may I ask you a question before I give it to you?
Amy: Of course.
Sheldon: Why are we saying give it to you like that?

Sheldon: All right, this goes against everything I stand for, but desperate times call for desperate measures. (Kneels down to pray) Lord, this is Sheldon Cooper, you're good friends with my mom. I know I've spent my life denying that you exist-
Howard: Got them!
Sheldon: -and I will continue do so!