Niles: Speaking of Daphne, I was hoping you could spare her this Friday. I'm planning on taking her for a weekend getaway, where I think we may be taking our relationship to the next level.
Frasier: Oh, my God, Niles! You're going to propose?
Niles: No, not that level, the level before that.
Frasier: You're going to ask her to move in with you?
Niles: One more level before that.
Frasier: Well, you're already dating...
Niles: No, that's two levels.
(Niles makes vague motions to indicate moving on)
Frasier: Oh, for heaven's sake, just tell me!
Niles: Well, you know. We're going to... consummate our relationship.
Frasier: What? Well, uh... Gosh, it's none of my business, I just thought you'd already reached that level.