The Addams Family

I've been watching The Addams Family lately (the original series from the 1960s), and a while ago, I realized that there's a characteristic in the theme song that mirrors the nature of the family itself.  When I lookt up the notation on the internet, I found wildly differing versions, but I think the vocal melody is something like this:

although the rhythm is much looser.  It's not straight eighth notes, but it's not pairs of a dotted eighth note and a sixteenth note either.  In the last verse, most of the note values in the last phrase are extended to quarter notes.

Here are the lyrics:

They're creepy, and they're kooky

Mysterious and spooky

They're altogether ooky

The Addams Family

Their house is a museum

When people come to see 'em

They really are a scream

The Addams Family

So get a witch's shawl on

A broomstick you can crawl on

We're gonna take a call on

The Addams Family

Except for the last phrase in each verse, all of the phrases both start and end on an upbeat instead of the more usual downbeat.  This uncommon feature in the music matches the family's "kooky" disposition.