Amy: Sheldon, there's something else I've been wanting to say, but before I do, I just... I want you to know that you don't have to say it back.I know you're not ready, and I don't want you to say it just because social convention dictates...
Sheldon: I love you, too.
Amy: You said it.
Sheldon: There's no denying I have feelings for you that can't be explained in any other way. I briefly considered that I had a brain parasite. But that seems even more far-fetched. The only conclusion was love.

Amy: Well, you can relax. Just because you think I look pretty doesn't mean we have to spend the night together.
Sheldon: Were you hoping we would because it's prom?
Amy: I'm always hoping. But tonight I just wanted to have a nice time with you. And maybe dance with someone who has arms.

Amy: What's going on?
Sheldon: What's going on is we're about to go to a prom. And there's a great deal of pressure on young couples like us to engage in what Mr. Bob Eubanks called making whoopee.

Penny: That, believe it or not, is my prom dress.
Bernadette: Wow, you still have it? I just assumed it was balled up in the corner of a barn somewhere.
Penny: What kind of teenager did you think I was?
Bernadette: Slutty.
Amy: Easy.
Penny: The word is "popular."

Amy: As a female scientist, I think what you do affects all of us.
Bernadette: And I think you don't like people expressing their sexuality because no one wants you to express yours.

Amy: I simply pointed out that they would never consider doing an article ranking male scientists on their sexuality, let alone showing them in various stages of undress.
Bernadette: Because no one wants to see Neil deGrasse Tyson in a wet T-shirt bent over the hood of a Porsche.

Amy: Bernadette is a successful microbiologist. She should be celebrated for her achievements, not her looks. I mean, what kind of message does that send?
Penny: I think the message is -- "Check out the rack on that scientist."

Sheldon: I have some odd freckles on my buttocks. Can I make an appointment for you to look at them?
Emily: Um... okay, I guess.
Amy: I'm with him three years, nothing. She's with two minutes, and he's taking his pants off.

It's a good thing I'm not wearing flag underwear right now because there's about to be a fire.

Sheldon: Did you enjoy my lecture?
Amy: No, and neither did our waiter.

I'm saying, in the spirit of science, what is that little skank's problem?

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.

TBBT Quotes

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.

Sheldon: If you could wake up tomorrow having gained any one quality or ability, what would it be?
Penny: Well, not to steal from the Bible, but turning water into wine sounds pretty good.