Frasier: [up against the wall] Oh yeah. Oh, it's never been like this before. Never! [puts his ear to the wall] Nothing. Damn her! She can give as good as she gets! [starts jumping up and down on the bed] Oh yeah, oh yeah! Oh, oh, mama! Oh God, you are so hot! I am burning up! Oh, that's it, that's it! Yes! Yes! Oh, my God, yes! Keep it up, baby! Oh, you're killing me!
[Lilith and Brian appear in the doorway. Madeline emerges from the bathroom in a towel.]
Frasier: Oh, God, you're an animal. Yes! Yes! [Frasier stops when he sees Madeline, Lilith and Brian]
Madeline: Well, obviously you don't need me!