Leonard: It says right here on Wikipedia, "A Mexican standoff is a confrontation between at least three parties."
Sheldon: How can you trust Wikipedia if they use "between" to refer to three parties?
Dealer: They should've used "among," right?
Sheldon: Or "amongst," if they were feeling whimsically archaic.
Dealer: All right, enough with the chitchat. Are we gonna watch Ernest Goes to Jail or not?
Sheldon: Absolutely. But don't be surprised if this movie sets you on the straight and narrow.
Dealer: I am open to change.

Leonard: What are we going to do?
Sheldon: Perform the experiment immediately.
Leonard: I'd love to, but we need liquid helium and our shipment's on back order for a month.
Sheldon: A month? What? Are you kidding me? That would have been a good time for you to soften the blow.
Leonard: That shirt brings out the blue in your eyes.
Sheldon: Thank you. Aren't you sweet?

Sheldon: He has glasses and I'm a know-it-all. We are not built for prison.

Sheldon: Uh, but this is violating university code.
Leonard: A little, but if I may quote Einstein, "The pursuit of science calls us to ignore the rules set by man"
Sheldon: Huh. All right, do it. Tell him we're in.
Leonard: Done.
Sheldon: I can't find that quote on the Internet. Did you make that up?
Leonard: Before I answer, may I just say your skin has never looked better.
Sheldon: Aren't you just made of sugar.