Last year, I was introduced to American Sentences by the incomparable Chuck Rybak. (buy his book...[scroll and you shall find]...your bookshelf will immediately become smarter and funnier.)
American Sentences are an Americanized form of haiku, still using about 17 syllables to express a thought or image, but instead of taking a three-line, vertical format, these sentences are linear, horizontal.
I've written several hundred haiku, but haven't tried my hand at American Sentences. I'm sure there are a few subtleties between the forms, and I plan to use National Poetry Month to find them. Or not.
"April begins, and my to-do list grows ever longer, such a fool."