Quote from Niles in The Show Where Diane Comes Back
Diane: Niles, do you remember the last time I was in town and we dined together? You had just started dating this woman. She was the queerest little creature. [Frasier hands her a glass of wine] Thank you. She ate everyone's sorbet, and then she had to lie down in the ladies' lounge while the coat-check girl massaged her abdomen! [noticing Frasier's expression] Oh, I hope I haven't put my foot in it. You and she didn't get married and live happily ever after, did you? Niles: No, can't say as we did.