Daphne: Oh, he wasn't expecting me. Me plans changed and I thought I'd drive up and join you all.
Frasier: Oh, well isn't that nice? You've got to leave!
Daphne: Why?
Frasier: No, well you see, Niles is up here for what I think you Brits call a "dirty weekend" with someone...
Daphne: Ooh.
Frasier: And the someone happens to be Roz.
Daphne: Roz? You mean, Roz Roz?