Oh, sweetie, if you're gonna screw things up, it's gonna be while you're here, not while you're away.

Penny

Penny: On a ship? Aren't they afraid Hawking will just roll overboard?
Leonard: Uh, he's not gonna be there. He's just sending a team to research his theory.
Penny: Oh sure. Like when you send me to kill spiders in your bathtub.

Sheldon: Things between you and Penny have never been better. I hope 4 months apart doesn't change anything.
Leonard stops car.
Sheldon: I should have opened with that, huh?

Who do you think would win in a fight -- you or a shark?

Sheldon

Leonard: I know what you are doing. You don't want me going on this research trip because you're afraid to be alone.
Sheldon: I'm not afraid to be alone. On the sea, it would be terrifying. Because of all the drowning.

Go away Sheldon is nibbling on my ... 14. Yes!

Amy

Sheldon: I have not ruled it out.
Amy: Wow. Talk dirty to me.

They think our relationship is a joke. Are we ever going to have an intimate relationship?

Amy

See what happens when you let girls play D & D.

Sheldon

I like you a lot and that's scary for me. Mostly because you're a proven flight risk.

Raj

Penny: This isn't alcohol. It's a potion that makes me like you.
Leonard: Double potion, please.

Sheldon: It would -- fun? Yeah, okay, three weeks ago, you brought crunchy peanut butter but now you want the girls to play D & D -- do you have a drug problem?
Leonard: What's the big deal?

The Big Bang Theory Season 6 Quotes

Amy: Soon my upper lip will be the same fake blonde as my beautiful best friend.
Penny: Hey, this is my natural hair color - Now.

Right now, Howard is staring down on our planet like a Jewish Greek god - "Zuesawitz".

Raj