Sheldon: (Running from the angry mob) Why is there never a pontoon plane when you need one?

Kripke: I'm Barry Kripke and I'm here because you told me there was a raffle. Where is the raffle?
Sheldon: Patience, patience, Barry, the waffle-- ahem. The raffle... is the grand finale to an evening-long festival of fun and folly.
Kripke: One more question--
Sheldon: Yes, you must be present to win.

Sheldon: Goodnight puny human!

Missy: Hey, Shelly.
Sheldon: I'm so glad you made it, Missy. This is my fiancée, Amy. Amy, this is my sister. If I ever need a kidney, this is where you get it.

Penny: I thought you were looking at a cliff on the beach.
Amy: We were, but Sheldon didn't like any of them. Some were too beachy, some were too cliffy.
Sheldon: And all of them were too outsidey.

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

Penny: Yeah, the last time I got a hand written letter, it was from someone who told me I parked like a blind person.
Leonard: That someone has a name.
Sheldon: Uh, thank you.

Sheldon: I suppose I could see myself in a scientific boyband. Of course I'd be the dreamy one and the smart one.

Sheldon: But I need it. It's the only way to settle the contradictions between gravity and quantum mechanics.
Penny: Well, it's too much money, you can't ask for that all at once.
Sheldon: Well, what if I ask for it in six easy installments of $83,333,333.33?

Meemaw: Sheldon, tell this girl that my ring will never be on her finger.
Sheldon: Yeah, I'm gonna opt out of that one, too.

Sheldon: I always looked up to you and Pop-Pop. I know what a challenging man he could be, but I saw you stand by him and make him into a better person.
Meemaw: I did.
Sheldon: Yeah, well, that is exactly what I've been doing the last five years with this little work in progress.
Leonard: He never disappoints, does he?

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?

Amy: What's with the blinking?
Sheldon: It's Morse code. So we can talk about without hurting --'s feelings.
Amy: Sheldon, I don't know Morse code.
Howard: I do. And if you have something to say, you can say it to my face.

Amy: Well, for starters, there's nothing wrong with keeping our toothbrushes in the same holder.
Penny: Sheldon, what do you say to that?
Sheldon: I think we should see other people.

Amy: Okay, you ready?
Sheldon: Yeah, almost. I'm working on my facial expressions. See, uh, I've got interested. Hmm.
I've got very interested. Hmm.
Oh, and, uh, enraged.
Amy: Why would you be enraged?
Sheldon: Better to have it and not need it than to need it and not have it.