Penny: I'm a vegetarian. Well, except for fish, and the occasional steak. I love steak!
Sheldon: Well, that's interesting. Leonard can't process corn

Leonard: What are you doing?
Amy: We're playing doctor. Star Trek style.
Sheldon: I'm in hell, Leonard. Don't stop.

Sheldon: Who told you you could touch my board?
Leslie: No one.
Sheldon: I don't come in to your house and touch your board.
Leslie: There are no incorrect equations on my board.
Sheldon: Oh! That is so, so...
Leslie: I'm sorry; I've got to run, if you come up with an adjective text me.
Sheldon: Inconsiderate, that is the adjective, inconsiderate!

Please tell me you are not having coitus.

Amy: This year's donations may go to, say, the geology department.
Sheldon: Oh dear, not the dirt people.

Sheldon: It's doubtful that his mother will be over-impressed with a woman whose biggest achievement was memorizing the Cheesecake Factory menu.
Penny: Hey, it's a big menu! There's two pages just for desserts!
Leonard: And those specials, they change every day!
Penny: Okay, it's lame when I say it, it's just ridiculous when you pile it on.

Leonard: So don't watch TV. Read a book.
Sheldon: And be a social pariah? Now you know that's not my style.

Howard: No ... about my job. I want you to tell me I'm good at what I do.
Sheldon: You're obviously good at what you do.
Howard: Well, then why are you always ripping on me?
Sheldon: Oh, I understand the confusion. I have never said that you are not good at what you do, it's just that what you do is not worth doing.

Jeepers! That's yucky.

Leonard: What were you doing at Penny's?
Sheldon: Well, we had dinner, played some games, and then I spent the night. Oh, and you'll be happy to know that I now have a much better understanding of "friends with benefits"

Sheldon: Now, back to our game.
Raj: You were in the middle of an erection.
Sheldon: Oh, of course. It's right here in my hand.

The two of you need to get your women in line!

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?