You know I'm a big believer in breaking bad news to a guy when you're in bed with him. That's how I told my high school boyfriend I slept with his brother. That's how I told his brother the same thing.

Berndette: Oh, I don't know. I don't want to manipulate him with sex.
Penny: Oh, sweetie ... that's what sex is for.

Sheldon, that's not what girlfriends are for. Although, you don't use them for what they're for, so what do I know?

Howard: I got pretty exciting NASA news today. Next week I fly to Houston for orientation and zero-gravity elimination drills.
Penny: What does that mean?
Bernadette: He's gonna to learn to poop in space.
Howard: Open the pod bay doors, HAL.
Raj: Maybe your nickname should be "Brown Dynamite."

Leonard: So, I've got a gunshot wound. That's pretty bad-ass.
Penny: No, you've got a Reebok with a gunshot wound and an ouchie on your pinky toe.

Penny: You mean like a beta test?
Leonard: Well, technically, this would be an alpha test. A beta test requires people that weren't involved in the development of the appli....
Penny: Seriously, do I not get credit for knowing beta test?
Leonard: No, absolutely you should.

Leonard: I missed you.
Penny: You see me all the time. You sure you don't just miss the sex?
Leonard: Well, yeah, the sex with you is pretty great. Have you ever tried it?
Penny: I have. You're not wrong.

Leonard: No, just you and me.
Penny: Have you thought this through?
Leonard: Yes, and I think we should go anyway.

Leonard: What are you afraid of?
Penny: Well, what if we do go out and I do something stupid and dump you again.
Leonard: What if I dump you?
Penny: [Scoffs] Come on, be serious.

Leonard: How does a miserable date end in sex?
Penny: I don't know, it's complicated.
Leonard: Well, I'm a pretty smart guy and right now my brain has dibs on the blood supply so give it a go.

Penny: Bat signal? What are you, some kind of nerd?
Leonard: Not some kind of nerd, I'm the king of nerds.
Penny: What does that mean?
Leonard: Uh, it means if anyone displeases me, I don't help them set up their printer.
Penny: You are so funny.
Leonard: Good. Remember that when I take my shirt off

Penny: You mean, like a date?
Leonard: Not like a date, a date.

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