JANE: Could you remind lovely Susan that Jill and I are vegetarians?

STEVE: You’re what?

JILL: You’re not a vegetarian!

JANE: I’m a bi-vegetarian!

JILL: What? That doesn’t exist! It’s not possible!

JANE: I’m an emotional vegetarian, Jill. I know a lot of vegetarians and we tend to like the same films. Do you have a problem with that?

JILL: You could never finish your greens and you could suck a whole pig through a straw.

JANE: I’m not exclusively vegetarian, Jill, if that’s what you’re trying to say. Vegetarianism for me is about, mmmm, saying yes to things — even meat.

JILL: No, it isn’t.

Steven Moffat (b. 1961) Scottish television writer, producer

Coupling, 01×04 “Inferno” (2000-06-02)
    (Source)

Verified against Source (Video), at 13:21.