I saw this one again the other night, and there has always been a line I never understand, so maybe someone here gets it.
First, Kramer discusses his preparation for "New Year's Eve 1999, the Millenium".
Then toward the end of the episode, we hear this:
JERRY: By the way Newman, I'm just curious. When you booked the hotel, did you book it for the millennium New Year?
NEWMAN: (smug) As a matter of fact, I did.
JERRY: Oh, that's interesting, because as everyone knows, since there was no year zero, the millennium doesn't begin until the year two-thousand and one. Which would make your party one year late, and thus, quite lame.
Here's what I don't get - if the party is New Year's Eve 1999, and the millenium doesn't begin until 2001, then Newman's party is one year EARLY, not one year LATE.
Am I missing something? Why isn't Jerry's line, "Which would make your party one year early, and thus, quite lame."