Wolowitx: You think you can put up with Sheldon?
Raj: Well I'm a hindu. My religion teaches that if we suffer in this life, we're rewarded in the next. Three months in the north pole with Sheldon and I'm reborn as a well hung billionaire with wings

Leonard [about snuggie gift]: what does this mean?
Penny: Wine, credit cards and late night television are a bad combination

But if we were part of the team that confirmed string theory, we could drink for free in any bar in any college town with a university that has a strong science program!

Raj

Wolowitz: Just imagine ... if he says yes, we'll have an entire summer without Sheldon.
Raj: We could play outside.
Wolowitz: We could sit on the left side of the couch.
Leonard: I could use the bathroom at 8:20!
Raj: Our dreams are very small, aren't they?

Sheldon: It must be an emergency; everyone at the university knows that I eat my breakfast at 8 and move my bowels at 8:20
Leonard: Yes, how did we live before Twitter?

Wolowitz: This is the thing from the pizza box that keeps the lid from touching the cheese.
Raj: Is that what this is for? In India, the lid just touches the cheese. Of course, we also have rampant poverty and periodic outbreaks of chlorea so a little cardboard on our cheese is no biggie

Sheldon: Why does Leonard get to go?
Wolowitz: Because he's upset over his situation with Penny, and if I have to hear about it again, I'm gonna kick him in his ovaries

If you really want to clean up your Karma, go get my fricking latte

Raj [to Leonard]

I have to say I thought the toilet humor would get less funny with repetition. Apparently there is no law of diminished comedic returns when it comes to space poop

Sheldon

Sheldon: You have to check your messages, Leonard! Leaving a message is one-half of a social contract, which is completed by the checking of the message. If that contract breaks down, then all social contracts break down and we descend into anarchy.
Leonard: It must be hell inside your head.
Sheldon: At times.

Raj: Interesting. Penny's current suitor asking advice from Penny's former suitor.
Leonard: Thanks for close-captioning my pain, Raj.

Stuart: Here Sheldon. I pulled the new Hellboy for you. It's mind-blowing.
Sheldon: Excuse me! Spoiler alert!
Stuart: What? I didn't spoil anything.
Sheldon: You told me it's mind-blowing, so my mind is going into it pre-blown. Once a mind is pre-blown, it cannot be re-blown.
Stuart: I'm sorry.
Sheldon: Said the Grinch to Christmas.

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?