PENNY: Didn’t I say you two would be naturals? Much better than these two and they’ve been here all week. But you used to date, didn’t you?
JEN: Uh, not right now, okay?
PENNY: I’m right, aren’t I? You dated, it didn’t work out, but then you got past all your issues and now you actually trust each other, right? See, you can see that in the dancing. You can see that the trust is there. [about Pacey and Joey] Now these two, on the other hand, a whole different story. I mean, look at them. Look at their form. Look at the tension in their arms.
PACEY: Okay, is there some sort of problem here?
PENNY: Well, what did I say about rib cages touching?
JOEY: No, sorry.
PENNY: Can we do that?
PACEY: It’s just not gonna happen, all right?
PENNY: Right, see what I mean? See the hostility, the way they’re wary with each other, not to mention the constant bickering and name calling. Now these two clearly are in the early stages of some screwball mating ritual.
JOEY: Ok, you’ve got it wrong, lady.
PENNY: Really, I do?
PACEY: Oh, completely.
JOEY: Actually, you could not be more wrong.
PENNY: There’s enough sexual tension here to power a Kiss reunion tour. I can’t remember the last time I saw dancing this bad. True.
DAWSON: Wait a minute, just because they can’t dance you think that they’re…
PENNY: Well, it’s this theory that I’ve developed based on years of experience. If people dance that badly, then they’re usually hot for each other. The dancing doesn’t lie.
From: 3x09 - Four To Tango