Raj: You think he bites?
Howard: Stick your hand in there and find out.
Raj: You fooled me with that goat at the petting zoo. You will not fool me again.

Raj: I was trying to help you! And at the first sign of trouble you ran away, leaving me to fend off a family of rats! You're a completely selfish human being and a... and a physical and a moral coward!
Sheldon: His statements of the obvious continue to annoy.

Raj: So, as Hannah Montana, Miley was a world-famous pop star.But then she would take off her wig and go to school like a normal girl. Which, I don't have to tell you, at that age, is its own headache.
Sheldon: That's preposterous. How would she go unrecognized
just by wearing a wig?
Raj: But you're okay with Superman concealing his identity with a pair of glasses?
Sheldon: He doesn't just put on a pair of glasses. He combs back his curlicue and affects a mild-mannered personality.

Raj: It's also a live mine, so there'll be dynamite explosions going off in the distance.
Sheldon: Yeah, I have a lactose-intolerant roommate with a taste
for ice cream. Next.
Raj: Oh, you have to be down there for 12 hours at a time.
Sheldon: Yeah? We have to be somewhere.
Raj: Well, there's no toilets-- we'll have to do our business
in a bucket.
Sheldon: So it's settled-- we're not doing it.

Raj: Hey, Sheldon, you busy?
Sheldon: I'm always busy. This mind is capable of advanced multitasking. You know, currently, I'm attempting to solve the Penrose conjecture, I'm composing my Nobel acceptance speech for when I've solved the Penrose conjecture, and I'm wondering
how mermaids have babies.
Raj: Don't they lay eggs on a rock?
Sheldon: Now I've got room for another thing.

Sheldon: Are they making fun of us?
Raj: Yup.
Sheldon: I miss the old days when I couldn't tell.

Leonard: Hold on. So, your idea is to get a van and cruise the streets looking for kids to pick up?
Guys: Yes.
Leonard: And are you gonna use candy to lure them in?
Raj: We are now!

Raj: Since when do you read Social Science?
Sheldon: I go to the bathroom like everybody else.

Something just didn't seem right about Koothrapeeney.

Sheldon: I recently read that during World War Two, Joseph Stalin had a research program to create supersoldiers by having women impregnated by gorillas.
Howard: What a sick use of science.
Raj: Hey, as long as the baby's healthy.
Amy: I wonder if Stalin considered any other animals.
Leonard: Hippos are the deadliest creature. A half-human, half-hippo soldier would be pretty badass.
Howard: Yes, but when they're hungry-hungry, you can stop them with marbles.
Sheldon: Yeah, the correct animal for interspecies supersolider is koala. You would wind up with an army so cute it couldn't be attacked.

Howard: Creepy chummy, like you and your dog.
Raj: She feeds him out of her own mouth?
Howard: I mean, he calls her Debbie, she calls him Stewie and they're all giggly around each other. And believe me, when food goes in that mouth, it does not come out.

Raj: Boy, I'm so hungry today. I wonder why?
Howard: Because you had sex the other night?
Raj: You know what? That may be it. By the way, it isn't like riding a bike. Like, I fell off a few times.

TBBT Quotes

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.

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