You know learning can be fun, until you HAVE to learn it. I remember the teacher FORCING us to read Romeo & Juliet and it was only fun when everyone started screwing around with it.
Or do you remember the animal group listing hierarchy?
King - kingdom
Phillip - Phylum
Came - Class
Over - Order
For - Family
George's - Genus
Sword - Species
That's not fun to learn until you substitute the mnemonic words with something dirty.