The Big Bang Theory, Season 6

Sheldon:
This insistence on hand-holding is preposterous.

Amy:
Well, I like it.

Sheldon:
Yeah, of course you do. You're a girl. You like all kinds of hippy-dippy things.

Amy:
Just watch the movie.

Sheldon:
It's not fair. Penny isn't making Leonard hold hands.

Amy:
There might be a reason for that.

Sheldon:
Sweaty? Unhygienic? Looks dumb? Take your pick.

Amy:
Penny said she's not sure she wants to be Leonard's girlfriend anymore.

Sheldon:
Wrong. She just took a sip from his Diet Dr. Pepper.

Amy:
So?

Sheldon:
So, if she wants to end her pair-bond with Leonard, why on earth would she guzzle a witches' brew of his soda and spit?

Amy:
It's complicated.

Sheldon:
String theory is complicated. That's just yucky. Don't get any ideas. All right, for the sake of argument, let's say that's true. Why doesn't Penny just end the relationship?

Amy:
She's not sure how she feels.

Sheldon:
How can she not be sure how she feels? You know, when I have a feeling, I know it. Trains? Love them. Swordfish? I love them, too. They're fish with a sword for a nose.

Amy:
Regardless, don't say anything to Leonard.

Sheldon:
Now you're asking me to keep a secret from my best friend, colleague, and roommate?

Amy:
Yes, please, Penny will kill me.

Sheldon:
Uh, fine. FYI, secret-keeping? Hate it. Hand-holding? Not a fan. Hammerhead shark? I love that thing. Yeah, it's another fish with a tool on its head.

Stuart:
Raisinet?

Sheldon:
Shh, we're trying to watch the movie. This is not working out with him.