We're the Justice League of America. There's only one thing we can do - turn around and slowly walk away.

Zack: Where do they keep the Archie comics?
Sheldon: In the bedrooms of ten year old girls were they belong.

Zack: I haven't been to a comic book store in literally a million years.
Sheldon: Literally? Literally a million years?

Zack: I see, you were inferring that i'm stupid.
Sheldon: That's not correct. We were implying it... you then inferred it.

Was the starfish wearing boxer shorts? Because I'm pretty sure you were watching Nickelodeon.

Amy: I have potential for sexual arousal.
Sheldon: A cross we all must bear.

Penny: That's thinking ahead.
Sheldon: The alternative would be to think backwards.. and that's just remembering.

Amy: Sheldon, I am not going through menopause.
Sheldon: Are you sure? You said that with the testy bark of an old bitty.

I'd like to say I'm very happy that you're back together, and if I can figure out a way to do so and sound sincere, I will.

Even at Star Trek conventions, they only let him in if he helps set up!

Well, if it isn't Wil Wheaton, the Jar-Jar Binks of the "Star Trek" universe.

Sheldon: And here's where we are -- the runts in a large litter unlikely to ever reach the nourishing teats of Indiana Jones.
Leonard: So it's good we stopped for dinner.

TBBT Quotes

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.