You would fetch a unicorn.

Her heart's full of love, no one cares what's in her mouth.

Amy: Jewelry? Seriously? Sheldon, you are the most shallow, self-centered person I have ever met. Do you really think that another transparently manipul... Oh! It's a tiara! A tiara. I have a tiara! Put it on me, put it on me, put it on me, put it on me, put it on me, put it on me, put it on me.
Penny: You look beautiful
Amy: Of course I do. I'm a princess and this is my tiara.
Sheldon: You were right, the tiara was too much.

Who would have thought Fuzzy Fingers Fowler is best friends with a bully?

Sheldon: I got a splinter.
Amy: What do you want me to do about it?
Sheldon: Relationship agreement - Section 4: Boo-boos and ouchies. You have to take care of it.
Amy: I should've gotten a lawyer.

Stuart: Can I help you find anything?
Amy: A comic that doesn't depict a woman whose bosom can't be used as a flotation device.

If you're keeping him, I've got a cage you can borrow. One of the test monkeys slipped on a banana peel and broke his neck. It was both tragic and hysterical.

Whee! Ooh, finally someone found second base.

I'm just saying, second base is right there.

Amy: At this moment, I find myself craving human intimacy and physical contact.
Sheldon: Oh, boy.

Sheldon, sometimes you forget, I'm a lady. And, with that comes an estrogen-fueled need to page through thick glossy magazines that make me hate my body.

Amy: Sheldon, is it possible that your foul mood -- or, to use the clinical term, bitchiness -- is because your mother isn't making you a priority?
Sheldon: No. Or, to use the clinical term: "nuh-uh."

TBBT Quotes

Oh, Bernadette, please play my clarinet.

Raj's poem

Sheldon: I'll have a diet Coke.
Penny: Can you please order a cocktail? I need to practice mixing drinks.
Sheldon: Fine... I'll have a virgin Cuba Libre.
Penny: That's... rum and Coke without the rum.
Sheldon: Yes, and would you make it diet?