'Tis been half a year since I turned seventeen. Borrowing a tradition from an artist that I like, I searched "Seventeen and a half" in google images. I was rewarded with this:
"Because no line ends with more than one unstressed syllable, while there are occasionally two at the beginning of a line, I would if you held a pistol to my head class it as rising rhythm."
Something I found while reading about iambic meter. I thought it amusing.