Sheldon: "Sheldon's Mine Simulation Log, entry 4: My KitKat has melted. All is lost."

Amy: Why'd you pop it?
Sheldon: Sorry, I was aiming for your heart.

Sheldon: Ladies.
Penny: What's up?
Sheldon: As you may know, I have been experimenting with elevated anxiety levels, and I thought what better way to increase my discomfort than to subject myself to an evening of tasteless, uncensored crotch talk.

Howard: You're either on Team Leonard or Team Penny.
Sheldon: Which one picks last?
Howard: What?
Sheldon: Well, usually I'm on the team that picks last. Unless there's a kid in the wheelchair.

Penny: That's so funny. I never would have pegged you for a Pisces.
Sheldon: You're making it difficult to love you right now.

Leonard: That's not necessary.
Sheldon: It is. They're what hold back the urine and faeces.

Leonard: I'm a little nervous.
Sheldon: Well, get over it. Confidence is key in these situations.
Leonard: Right. *Pushes button*
Sheldon: You pushed it! Are you out of your mind?

Sheldon: Do either of you know Beyonce? I'd love her to get behind it.

Sheldon: How about we split the difference and discuss why Austria was an arch-duchy and not just a regular duchy?

Sheldon: Amy's upset? Is it about me?
Leonard: No, I think it's because we're eloping.
Sheldon: Your marriage is causing her pain? You know great, I take it back. Go ahead and do it. Yay for love!

Sheldon: So that's all this day was? A plan to butter me up before delivering bad news?
Leonard: Come on, buddy.
Sheldon: No, I thought we were friends. You asked for a sip of my Icee. If you had your own straw, I might've said yes.

Leonard: Maybe you should consider women who aren't in serious relationships with your closest friends?
Sheldon: There's that prostate doctor, but I'm still mad at her.

Adam Nimoy: What was it about Spock that appealed to you?
Sheldon: I think the same thing that appeals to people everywhere, the dream of a cold, rational world entirely without human emotion.
Spock came from a planet governed only by logic.
You know, on Vulcan, when your brother asks, "Why are you hitting yourself?" The answer is, "I'm not. You're moving my arm." To which he says, "fascinating." And then you both watch educational television.

Leonard: When did we get a wall safe?
Sheldon: When there was no more room in the floor safe.
Leonard: When did we get a floor safe?
Sheldon: When we got the security camera.
Leonard: There's a security camera?
Sheldon: Aquaman, protecting your home since 2012.
Penny: Oh, my God. We've done things on that couch.
Sheldon: Yeah, you don't have to tell me.

Leonard: Hey, I made French toast sticks.
Sheldon: On oatmeal day?
Leonard: Ah, I also made oatmeal.
Sheldon: Ooh, that's a lot of carbohydrates for a man on the prowl. You know what? You eat it. You're married, it doesn't matter what you look like.