I comprise a fixed number of lines
And that number is smaller than nine
As I self-referentially
Describe myself, potentially
I'll become a real breeze to divine
Who am I?
This one isn't going to win any awards for Most Difficult Riddle of the Year, but it seemed amusing enough for a Sunday afternoon.
P.S. The answer is not "riddle".
Edit: Watch out for spoilers in the comments below.
Edit 2: by popular demand, I changed one word in the riddle to make it more accurate and pretty (though somewhat easier as a result).