Start with some letters
Then make ‘um into words.
Put a few together,
Maybe divide it into thirds.

You can use long-winded terms,
But you'll need a good thesaurus.
With it, you can write a little mystery,
About a purple brontosaurus.

Or tell a loved one how much you love
To have them as a friend.
Then before you even know it
Your poem will have an end.

Troy Dunn

http://www.poemhunter.com/poem/how-to-write-a-poem-2/