Howard: Sheldon, some day, if you get a car, I'm sure they'll give you another parking space.
Sheldon: I don't want another parking space. I want my parking space. It's perfect. It's a corner spot, cutting the risk of door-dings in half. It's a mere 28 steps from the building entrance. The nearby tree provides shade on hot days and is also home to a delightful squirrel. Which is fortuitous because most squirrels are real jerks.

Howard: Are you listening to yourself?
Sheldon: I always listen to myself. It's one of the great joys of my life.

Sheldon: Okay, stop ruining Valentine's day and order my pizza.

Kripke: You guys ever use any toys?
Sheldon: I do have a model rocket next to my bed.
Kripke: A rocket? You're a freak! I love it!

Sheldon: (Yelling at a mockingbird) And you, the notes are C, D, E, G and A! You pick one or I'm chopping down that tree!

Sheldon: I haven't seen Raj in several days. Is he no longer part of our social group? And if so, should we be interviewing for a replacement? Perhaps this time we go Latin.

Sheldon: She's remarkable.
Leonard: She really is.
Sheldon: How is it that she can remember all those lines, yet as a waitress she can't remember no tomato on my hamburger?

Howard: I thought you didn't like Facebook any more.
Sheldon: Don't be silly, I'm a fan of anything that tries to replace actual human contact.

Sheldon: You know, we were annihilated by our own incompetence and the inability of some people to follow the chain of command.
Leonard: Sheldon, let it go.
Sheldon: No, I want to talk about the fact that Wolowitz shot me in the back.

Raj: And we're blending, and we're blending, and we're done. Sheldon: I know Mr. Data isn't supposed to smile, but here it comes. Howard: (Dressed as a Borg) Come on, guys. Let's do this. Leonard: (dressed as Captain Picard): Yeah, I'm sweating my bald cap off.

Leonard: What kind of a person steals another person's car in broad daylight?
Sheldon: What kind of person leaves his keys in the car?
Leonard: I thought we agreed this was all Koothrappali's fault.
Sheldon: You're right. (To Raj) Nice going.

Sheldon: I didn't want to upset you. Howard made it very clear that my allegiance should be to male comrades before women who sell their bodies for money.
Leonard: Is it possible he said Bros before Hos?
Sheldon: Yes, but I rephrased it to avoid offending the hos.

Stuart: My carpal tunnel is acting up.
Sheldon: Play through the pain.

Sheldon: Oh, Leonard, there you are. I need you to check my head for chair lice.
Leonard: I did it last night, I'm not doing it again.
Howard: Just his head, right?
Leonard: I don't want to talk about it. You didn't catch bugs from Penny's chair.
Sheldon: Yes, I did. And now they're cavorting at the base of my hair follicles, like dancing hippies at the Redwood National Forest.
Leonard: Sheldon, you do this all the time. You fixate on some crazy idea and then blow it way out of proportion.
Sheldon: Name one time I have ever done that.
Leonard: How about the time you put GPS trackers in your garbage because you were convinced that North Korean spies were stealing your doodles? The chicken nuggets you were sure were human nuggets. The strangely shaped cloud that was following you around town. The time you put on my shirt by mistake and were convinced that you started growing again.
Sheldon: I said name one. You really need to work on your listening skills.

Sheldon: Oh, a scroll. I like scrolls. They're my third favourite system of transmitting the written word, after stone tablets and sky-writing.
You have all been summoned to join a thrilling Dungeons and Dragons adventure. Your quest begins in a secret northern village of elves who have all been massacred. I like where this is heading. Your task is to rescue their leader from a dungeon of ogres. Oh, that's a saucy twist. That leader's name: Santa Claus.
No, no, no!
Leonard: Its actually ho, ho, ho, but you'll get the hang of it.