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?

Dr. Koothrappali: Well, if you're not coming out, why did you call us during the cricket semi-finals?
Raj: 'Cause I, I'm tired of trying to meet someone and, I think I'd like you to help me find uh, a wife.
Mrs. Koothrappali: And just to clarify, a female wife?

Mrs. Koothrappali: Please tell me you're not dating an American. I knew this would happen. Rajesh, are you letting your sister date that little Howard boy?

Raj: Hello, mommy.
Mrs.Koothrappali: Hello, Rajesh. What a nice surprise.
Raj: Well, I've been thinking about you. Are you happy, mommy?
Mrs.Koothrappali: Such a sweet boy for asking. I can't believe you come from the poison seed of your father.

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.

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: 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!