In school, one of my teachers, Mister Ball, gave us a mnemonic to remember the... something. Unfortunately, it has been a very long time and I only remember half of the mnemonic. I don't even remember what it was for.
Here is what I do remember:
The first two lines rhymed with each other, but I don't think they were real words.
What was the first half of the mnemonic, and what was the mnemonic's meaning?