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.

The Big Bang Theory Season 6 Episode 24 Quotes

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.