Frasier: Say, Rebecca, if you're in need of some extra guests, I know a couple of fun-loving gals who could really use a night on the town away from boring old me. And, uh, Lilith, you've always told me that you found Carla an interesting, uh psychological case study.
Lilith: Won't you be lonely?
Frasier: Well, it'll give me a chance to be alone with Dorothy's books and a roaring fire.
Dorothy: Well, what do you say, Lilith?
Lilith: [sings] Big wheel keep on turning Proud Mary keep on burning Rolling
Dorothy: Rolling
Lilith: Rolling
Dorothy: Rolling
Both: Rolling on the river
Frasier: You know, you don't often get to see them loosen up like this.