Penny: Leonard, I don’t know what to tell you. It was just a hug.
Leonard: Glad we cleared that up.
Penny: Yeah.
Leonard: I guess I'll see you.
Penny: Okay, have a safe trip.
Leonard: Thank you. Bye.
Penny: Okay, bye. [closes door] It means I wish you weren't going.

Sheldon: Leonard, you may be right. It appears that Penny secretly wants you in her life in a very intimate and carnal fashion.
Leonard: You really think so?
Sheldon: Of course not. Even in my sleep-deprived state, I've managed to pull off another one of my classic pranks. Bazinga!

Raj: Is this just so we won't touch your stuff while you're away?
Sheldon: I'll admit that was a concern, but the fact is I'll need a support team, and the three of you are my first choice.
Howard: Really?
Sheldon: Well, there are others who might be more qualified, but the thought of interviewing them gave me a stomach ache.

Howard: Dr. and Mrs. Koothrappali, namaste. I understand your concern, but if it'll make you feel any better, my mother is fine with me going. And this is a woman who kept a safety rail on my bed until I was 17.
Mrs Koothrappali: So, she has no problem with her son being eaten by a walrus?

Raj: But mummy, all the other guys are going to the North Pole.
Mrs. Koothrappali: I don't care what the other guys are doing. If the other guys jumped in the Bay of Bengal and tried to swim to Sri Lanka, would you follow them?

Raj: Well, I'm a Hindu. My religion teaches that if we suffer in this life we are rewarded in the next. Three months at the North Pole with Sheldon and I'm reborn as a well-hung billionaire with wings.

Sheldon: Everyone at the university knows I eat breakfast at 8:00 and move my bowels at 8:20.
Leonard: Yes, how did we live before Twitter?

Mrs. Koothrappali: I told you no. Why don't you believe me?
Mrs. Wolowitz Cause it doesn't make sense to me. How can it be that in the entire country of India, there isn't one Outback Steakhouse?

Sheldon: I'm a theoretical physicist, a career I chose in no small part because it's indoors. But if I'm able to detect slow-moving magnetic monopoles there, I will be the first scientist to confirm string theory. People will write books about me. Third-graders will create macaroni-art dioramas depicting scenes from my life.
Leonard: Sure, maybe a tableau of me trying to pummel you to death.

Leonard: Howard, this is big science. You could be the engineer who builds the equipment that puts us on the cover of magazines.
Howard: I could also be the engineer who builds the crossbow that kills Sheldon.

Sheldon: Did you bring the dehydrated low-sodium soy sauce?
Leonard: Check.
Sheldon: Freeze-dried spicy mustard?
Leonard: Check.
Sheldon: Flash-frozen brown rice, not white?
Leonard: Uh, oh, sorry.
Sheldon: Not to worry. I hid it. Bazinga!

Mrs. Koothrappali: So, she has no problem with her son being eaten by a walrus?
Sheldon: That's very unlikely, Mrs. Koothrappali. If Raj dies, it'll be from frostbite, gangrene, acute sunburn or being ripped to shreds by a hundred pound polar bear.

Howard: Ma, I'm putting you on speaker-phone with Raj's parents. Can you tell them that you're okay with me going to the Arctic?
Mrs. Wolowitz Arctic? I thought you said Arkansas.

Leonard: Wait a minute. He offered to send you to the North Pole?
Sheldon: Yes. In fact, he was quite enthusiastic. He said, "Frankly, if I could send you tonight, I would."

Leonard: What about the really long hug? What did that mean?
Penny: That wasn't a long hug.
Leonard: It was at least five Mississippis. A standard hug is two Mississippis tops.