Martin: Don't get too comfortable, boys, we've gotta leave.
Frasier: What?
Martin: Well, it turns out I had a date with Estelle tonight. She's been waiting a half an hour. It's not like me to screw up like this.
Niles: Well, what about Penelope, Dad? You cannot just walk out on her party.
Martin: Well, hey, Estelle took the evening off special just to be with me, you know, and she's pretty steamed. Rules of the game, angriest woman wins.