The Big Bang Theory - The Grasshopper Experiment Quotes

Sheldon: When I was a little boy and got sick, which was most of the time, my mother would read [The Monkey and the Princess] to me. It's about an Indian princess who befriends a monkey who was mocked by all the other monkeys because he was different. For some reason I related to it quite strongly.
Penny: I know the reason.
Leonard: We all know the reason.

Penny: I need some guinea pigs.
Sheldon: Okay, there's a lab animal supply company in Reseda you can try. But if your research is going to have human applications, may I suggest white mice? Their brain chemistry is far closer to ours.
Penny: I swear to God, Sheldon, one day I'm going to get the hang of talking to you.
Leonard: His mom's been saying that for years.

Leonard: Do you really need the Honorary Justice League of America Membership card? 
Sheldon: It's been in every wallet I owned since I was five. 
Leonard: Why?
Sheldon: It says keep this on your person at all times. It's right here under Batman's signature.

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?

Rajesh: How can I be a gynecologist? I can barely look a woman in the eye!!

Leonard: What got into him?
Penny: Oh, a couple of virgin Cuba Libres who turned out to be a little slutty.
Leonard: You didn't.
Penny: You do your little experiments, I do mine.

Sheldon: How often does one see a beloved fictional character come to life?
Wolowitz: Every year at ComiCon. Every day at Disneyland. You can hire Snow White to come to your house. Of course they prefer if you have a kid.

Penny: Ok, here you go Leonard. One tequila sunrise!
Leonard: Thank you! You know, this drink is a wonderful example of how liquids with different specific gravities interact in a cylindrical container!