Niles: I have never been so insul-!
Frasier: Niles!
Niles: Okay, I'm sorry. I was just looking out for Dad here. I mean, what do we really know about this woman?
Frasier: She makes Dad happy, that's all we need to know.
Niles: Is it? Some people do get married before they know all they should. Remember Cousin Donald? He was married two years before he found out his wife used to be a man.
Frasier: Yes, well, Cousin Donald is a very rare case. First, most people don't have a hidden past. And second, most people have a better eye for details than Cousin Donald. For God's sake, the woman could pick up a watermelon with one hand.