Wow. These are terrible -- like an even more twisted form of "Joy to the World (the Teacher's Dead!)" This was horribly popular in like fourth grade (set of course to the tune of the religious hymn Joy to the World (the Lord has come):
Joy to the world,
The teacher's dead,
We barbequed her head,
And as for the body,
We flushed it down the potty,
Let Heaven and nature sing, let Heaven and Nature sing...