I just remembered some Christmas Carols that when I was a kid we changed the words around to make it twisted and funny.
Here is an example:
Joy to the world:
Joy to the world! The teacher's dead!
We bbaarbeqquuued his heeaaad!
What happened to his body?
We flushed it down the potty.
And round and round it goes!
And round and round it goes!
And roOOUUnnd and rouunnnd and round it goes!