Martin: Oh, all right, here's what happened. Penelope and I got along great, but after I dropped her off, I was still hungry. So I went to this little coffee shop near McGinty's for chili fries. Now, I know what you're wondering: doesn't McGinty's have chili fries? Yes, and they're very tasty, but...
Frasier: Who the hell is Estelle?!
Martin: She works in the coffee shop. We got to chattin' and the next thing you know, we're havin' a nightcap at McGinty's. Hey, when it rains, it pours.
(He edges past them)
Niles: Yes, Dad, but what about Penelope?
Martin: Oh, I'm seein' her Tuesday.
Niles: You just made a date with Estelle.
Martin: Not for Tuesday.
Niles: You're going to date both of them? Are you sure that's wise?
Martin: It's just dating. I met 'em both at the same time, I like 'em both. Where's the harm in it?
Niles: Well, don't you think that's a bit risky? What if one of them should find out?
Frasier: Penelope for example.
Niles: Yes, yes, you wouldn't want to alienate her permanently.
Martin: Oh, don't worry. I've watched you juggle. I got a pretty good handle on what not to do.