Oh man, I remember that one from the 50s. Slip the juice to me, Bruce.
Mama Looka Booboo, Harry Belafonte
Lots of Tom Lehrer, Allen Sherman, and Weird Al tunes qualify. But I really like The Elements Song:
His New Math is a close second
I remember this. I thought it was The Waitresses.
Does anyone remember the song that was a reporter asking questions and the answers were song snippets? I think there may have been a series of them. Oh and how about Stars on 45? Oh, and Shut uppa you face!
This post is an example of opening a thread, pressing quick reply, going to make a sandwich and then answering. Don’t do this. It makes you look dumb.
My Ding-A-Ling by Chuck Berry.
I had to stop watching that because I was laughing so hard.
It reminds me of “The Song That Goes Like This” from Spamalot.
I could never pick a favorite, but one I always remember fondly is: “Spliceway to Heaven”.
Wet Dream
Fish Heads
It’s been awhile since I listened to Dr Demento.
A lot of Voltaire’s songs straddle the line between novelty and filling. 
Wow, what is that saying “too late and a dollar short”
My number one novelty song was mentioned in post #2.
I remember that from college; so many fools chanting “ha ha hoo hoo”