Penny: I think it's so adorable you're making Sheldon breakfast.
Leonard: Well, he's having a rough time. Amy broke his heart, the DVR cut off the last minute of Doctor Who, that crow followed him home.

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.

Penny: Come on, Amy, show us the dress.
Amy: Okay, but I'm really stepping outside of my comfort zone here.
Penny: Uh, I don't think any of your comfort zones are showing.

Sheldon: Are you sure? I've heard that on those sites, often when you think you're corresponding with someone, it's actually a computer program pretending to be a real person.
Raj: And you're afraid it'll do a better job than you?
Sheldon: Excuse me. No one does a better job pretending to be a person than I do. Siri comes close, but I know more jokes.

Howard: If you don't want to use dating Web sites, what do you suggest?
Sheldon: Off the top of my head? Prospective women weed themselves out in a battle of wits until only one champion remains, she shows up at my door flush with the thrill of victory, and then sits quietly by my side while I watch Daredevil.
Howard: You seriously think women would fight for you?
Sheldon: People compete for jobs and trophies, why not me?
Howard: He's right. He knows a lot of jokes.