Leonard: Black beans, not pinto beans?
Sheldon: Yes.
Leonard: Double guacamole?
Sheldon: Of course.
Leonard: Lettuce shredded, not chopped?
Sheldon: Yes.
Leonard: No cilantro?
Sheldon: Nope.
Leonard: You understand why I'm doing this to you?
Sheldon: I do.
Leonard: That will be all.

Leonard: What would you be if you were attached to another object by an inclined plane, wrapped helically around an axis?
Sheldon: Screwed?
Leonard: There you go.

Sheldon: This song is never going to stop. Have you ever dealt with something so relentlessly irritating?
Leonard: That's a trick question, right?

Leonard: Penny, as a scientist, my job is to figure out why things happen. But I don't think I'll ever understand how someone like me could get to be with someone like you. You know maybe I don't need to understand it, I just need to be grateful. I love you, Penny.

Raj: Okay, just to be clear, roller skating was my idea, and I'm very unhappy that you turned it into a double date. I hope you both fall on your asses and break your coccyxes.
Sheldon: The plural of coccyx is coccyges.
Raj: Screw you. Give me back my lima beans.

Leonard: Penny, I told you if you don't put him in his crate at night, he just runs around the apartment.

Penny: What happened?
Leonard: Sheldon's escaped and he's terrorizing the village.